TJA1085HN,118

TJA1085 FlexRay active star coupler Rev. 2 — 7 March 2016 Product data sheet 1. General description The TJA1085 is a FlexRay active star coupler that can connect up to 4 branches of a FlexRay network. The TJA1085 is compliant with the FlexRay electrical physical layer specification V3.0.1/ISO17458-4 (see Ref. 1 and Ref. 2). Several TJA1085 devices can be connected via their TRXD0/1 interfaces to increase the number of branches in the network. A dedicated Communication Controller (CC) interface allows for integration into an ECU. The TJA1085 supports low-power management by offering bus wake-up capability along with battery supply and voltage regulator control. The TJA1085 meets industry standards for EMC/ESD performance and provides enhanced bus error detection, low current consumption and unmatched asymmetric delay performance. The TJA1085 also fulfills the JASPAR requirements as defined by the Japanese car industry. 2. Features and benefits 2.1 General         Compliant with FlexRay Electrical Physical Layer specification V3.0.1/ISO17458-4 Fulfills JASPAR requirements Automotive product qualification in accordance with AEC-Q100 Data transfer rates from 2.5 Mbit/s to 10 Mbit/s Supports 60 ns minimum bit time at 400 mV differential voltage Low-power management for battery-supplied ECUs Very low current consumption in AS_Sleep mode Leadless HVQFN44 package with improved Automated Optical Inspection (AOI) capability 2.2 Functional  Supports autonomous active star operation independent of the host ensuring the TJA1085 remains active even if the host fails or is switched off  Branches can be independently configured  Branch extension via TRXD0/1 inner star interface  16-bit bidirectional SPI interface up to 2 Mbit/s for host communication  Full host control over branch status  Enhanced wake-up capability:  Remote wake-up via wake-up pattern and dedicated FlexRay data frames TJA1085 NXP Semiconductors FlexRay active star coupler        Local wake-up via pin LWU  Wake-up source recognition  configurable per branch Enhanced supply voltage monitoring on VIO, VCC, VBUF and VBAT Auto I/O level adaptation to host controller supply voltage VIO Can be used in 14 V, 24 V and 48 V powered systems Enhanced bus error detection - detects short-circuit conditions on the bus Instant transmitter shut-down interface (BGE pin) Selective branch shut-down (partial networking) 2.3 Robustness  Bus pins protected against 8 kV ESD pulses according to HBM and 6 kV ESD pulses according to IEC61000-4-2  All pins protected against 1000 V ESD according to CDM  All pins protected against 200 V ESD according to MM  No reverse currents from the digital input pins to VIO or VCC when the TJA1085 is not powered up  Bus pins short-circuit proof to battery voltage (14 V, 24 V or 48 V) and ground  Overtemperature detection and protection  Bus pins protected against transients in automotive environment (according to ISO 7637 class C) 2.4 Active star functional classes       Active star - communication controller interface Active star - bus guardian interface Active star - voltage regulator control Active star - logic level adaptation Active star - host interface Active star - increased voltage amplitude transmitter 3. Ordering information Table 1. Ordering information Type number Package Name TJA1085HN TJA1085 Product data sheet Description Version HVQFN44 plastic thermal enhanced very thin quad flat package; no leads; 44 terminals; SOT1113-1 body 9  9  0.85 mm All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 © NXP Semiconductors N.V. 2016. All rights reserved. 2 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler 4. Block diagram VIO VBAT VCC1 VCC2 VBUF1 VBUF2 7 17 34 22 35 21 TJA1085 INH INTN RSTN 15 WAKE-UP TRANSMITTER BUS ERROR RECEIVER WAKE-UP TRANSMITTER BUS ERROR RECEIVER WAKE-UP TRANSMITTER BUS ERROR RECEIVER WAKE-UP TRANSMITTER BUS ERROR RECEIVER 33 BP_1 5 44 32 BM_1 STATE MACHINE SCSN SCLK SDI SDO LWU TRXD1 TRXD0 BGE 1 2 3 SPI TXD RXD BP_2 4 16 29 BM_2 ROUTING 13 12 27 BP_3 8 & TXEN 30 26 BM_3 10 9 11 6 37 19 GND1 GND2 24 23 BP_4 BM_4 015aaa152 GNDD Fig 1. Block diagram TJA1085 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 © NXP Semiconductors N.V. 2016. All rights reserved. 3 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler 5. Pinning information 34 VCC1 35 VBUF1 36 n.c. 37 GND1 38 RES6 39 RES5 40 RES4 41 RES3 42 RES2 43 RES1 44 RSTN 5.1 Pinning SCSN 1 33 BP_1 SCLK 2 32 BM_1 SDI 3 31 n.c. SDO 4 30 BP_2 INTN 5 GNDD 6 VIO 7 27 BP_3 BGE 8 26 BM_3 TXD 9 25 n.c. 29 BM_2 TJA1085 28 n.c. VCC2 22 VBUF2 21 n.c. 20 GND2 19 n.c. 18 VBAT 17 LWU 16 INH 15 n.c. 14 23 BM_4 TRXD1 13 24 BP_4 RXD 11 TRXD0 12 TXEN 10 015aaa150 Transparent top view Fig 2. Pin configuration 5.2 Pin description Table 2. TJA1085 Product data sheet Pin description Symbol Pin Type[1] Description SCSN I SPI chip select input; internal pull-up 1 SCLK 2 I SPI clock signal; internal pull-down SDI 3 I SPI data input; internal pull-down SDO 4 O SPI data output; 3-state output INTN 5 O interrupt output; open-drain output, low-side driver GNDD 6 G ground for digital circuits[2] VIO 7 P supply voltage for VIO voltage level adaptation BGE 8 I bus guardian enable input; internal pull-down TXD 9 I transmit data input; internal pull-down TXEN 10 I transmitter enable input; internal pull-up RXD 11 O receive data output TRXD0 12 IO data bus line 0 for inner star connection TRXD1 13 IO data bus line 1 for inner star connection n.c. 14 - not connected; to be connected to GND in application INH 15 O inhibit output; for switching external voltage regulator All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 © NXP Semiconductors N.V. 2016. All rights reserved. 4 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler Table 2. TJA1085 Product data sheet Pin description …continued Symbol Pin Type[1] Description LWU 16 I local wake-up input; internal pull-up or pull-down (depends on voltage at pin LWU) VBAT 17 P battery supply voltage n.c. 18 - not connected; to be connected to GND in application GND2 19 G ground connection for branches 3 and 4[2] n.c. 20 - not connected; to be connected to GND in application VBUF2 21 P buffer supply voltage for branches 3 and 4[3] VCC2 22 P supply voltage for branches 3 and 4[4] BM_4 23 IO bus line minus for branch 4[5] BP_4 24 IO bus line plus for branch 4[6] n.c. 25 - not connected; to be connected to GND in application BM_3 26 IO bus line minus for branch 3[5] BP_3 27 IO bus line plus for branch 3[6] n.c. 28 - not connected; to be connected to GND in application BM_2 29 IO bus line minus for branch 2[5] BP_2 30 IO bus line plus for branch 2[6] n.c. 31 - not connected; to be connected to GND in application BM_1 32 IO bus line minus for branch 1[5] BP_1 33 IO bus line plus for branch 1[6] VCC1 34 P supply voltage for branches 1 and 2[4] VBUF1 35 P buffer supply voltage for branches 1 and2[3] n.c. 36 - not connected; to be connected to GND in application GND1 37 G ground connection for branches 1 and 2[2] RES6 38 - reserved; to be connected to GND in application RES5 39 - reserved; to be connected to GND in application RES4 40 - reserved; to be connected to GND in application RES3 41 - reserved; to be connected to GND in application RES2 42 - reserved; to be connected to GND in application RES1 43 - reserved; to be connected to GND in application RSTN 44 I reset input; internal pull-up [1] IO: input/output; O: output; I: input; P: power supply; G: ground. [2] GND1, GND2, GNDD and the exposed center pad of HVQFN44 package must be connected together on the PCB; references in the data sheet to GND can be assumed to encompass GND1, GND2, GNDD and the exposed center pad of HVQFN4 unless stated otherwise. [3] VBUF1 and VBUF2 must be connected together on the PCB; note that references in the data sheet to VBUF can be assumed to encompass VBUF1 and VBUF2 unless stated otherwise. [4] VCC1 and VCC2 must be connected together on the PCB; note that references in the data sheet to VCC can be assumed to encompass VCC1 and VCC2 unless stated otherwise. [5] References in the data sheet to BM (e.g. pin BM or VBM) can be assumed to encompass BM_1, BM_2, BM_3 and BM_4 unless stated otherwise. [6] References in the data sheet to BP (e.g. pin BP or VBP) can be assumed to encompass BP_1, BP_2, BP_3 and BP_4 unless stated otherwise. All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 © NXP Semiconductors N.V. 2016. All rights reserved. 5 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler 6. Functional description 6.1 Supply voltage The TJA1085 state machine is adequately supplied if at least one of VBAT, VCC or VBUF is available. The internal supply voltage to the state machine is denoted by VDIG. VBUF is an auxiliary supply and is only needed for forwarding the wake-up pattern when VCC is not available. 6.2 Host Control (HC) and Autonomous Power (AP) modes - APM flag The APM flag determines whether the TJA1085 is host-controlled or is operating in Autonomous Power mode. It is in AP mode by default. The TJA1085 sets the APM flag: • • • • at power-on when a wake-up event is detected (on TXRD0/1, local or remote) when a VCC undervoltage event is detected in AS_Normal mode when a VIO undervoltage event lasts longer than tto(uvd)(VIO) The host can set or reset the APM flag at any time. 6.3 Signal router The signal router transfers data received on an input channel to all channels configured as outputs. If data is being received on more than one input channel at the same time, the channel that was first to signal activity is selected and data on the other channel/s is ignored. Whether or not the data on an output channel is transmitted depends on whether the output channel is enabled or disabled. The TJA1085 contains the following data input channels: • Branches 1 to 4 • TRXD0/1 interface (inner star interface) • TXD/TXEN interface The TJA1085 contains the following data output channels: • Branches 1 to 4 • TRXD0/1 interface • RXD pin 6.3.1 TRXD collision When the TRXD0/1 interface is configured as an output channel, a TRXD collision is detected (COLL_TRXD = 1) if pins TRXD0 and TRXD1 are both LOW for longer than tdet(col)(TRXD), generating a CLAMP_ERROR interrupt. When a TRXD collision is detected, the TJA1085 transmits a DATA_0 to all other active output channels (irrespective of the actual data on the selected input channel), until the selected input channel detects idle state. TJA1085 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 © NXP Semiconductors N.V. 2016. All rights reserved. 6 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler 6.4 Wake-up The TJA1085 supports the following wake-up mechanisms: • Remote wake-up via the bus (wake-up pattern or dedicated wake-up frame) • Local wake-up via pin LWU • Activity on the inner star interface (pins TRXD0 and TRXD1) Any wake-up event will generate a WU interrupt. A remote wake-up on a branch will generate an EVENT_BRx interrupt to indicate the branch where the wake-up pattern or dedicated data frame was detected. The host can identify the wake-up source by polling the General Status register (WU_TRXD = 1 for a TRXD0/1 wake-up; WU_LOCAL = 1 for a local wake-up) and the Branch Status register (WU_BRx = 1 for a remote wake-up). 6.4.1 Remote wake-up When the TJA1085 is in AS_Standby or AS_Sleep, all branches are monitored for wake-up events. When a valid wake-up pattern or data frame is detected on a branch, the relevant WU_BRx status bit is set and the wake-up pattern/data frame is forwarded to all other enabled branches. A remote wake-up event occurring during an AS_Normal-to-AS_Standby or AS_Normal-to-AS_Sleep transition will also be detected, setting the relevant WU_BRx status bit and generating WU and EVENT_BRx interrupts. 6.4.1.1 Bus wake-up via wake-up pattern A wake-up pattern consists of at least two consecutive wake-up symbols. A wake-up symbol consists of a DATA_0 phase lasting longer than tdet(wake)DATA_0, followed by an idle phase lasting longer than tdet(wake)idle, provided both wake-up symbols occur within a time span of tdet(wake)tot (see Figure 3). The transceiver also wakes up if the idle phases are replaced by DATA_1 phases. A wake-up event is not detected if an invalid wake-up pattern is received. See Ref. 1 for more details on invalid wake-up patterns. TJA1085 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 © NXP Semiconductors N.V. 2016. All rights reserved. 7 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler ZDNHXS WGHWZDNHWRW 9GLI P9 !WGHWZDNHLGOH !WGHWZDNHLGOH   !WGHWZDNH'$7$B !WGHWZDNH'$7$B !WGHWZDNHLGOH !WGHWZDNHLGOH    !WGHWZDNH'$7$B !WGHWZDNH'$7$B ZDNHXSV\PERO ZDNHXSV\PERO ZDNHXSSDWWHUQ DDD Fig 3. Bus wake-up timing See Ref. 1 for more details of the wake-up mechanism. 6.4.1.2 Bus wake-up via dedicated FlexRay data frame The TJA1085 detects a wake-up event when a dedicated data frame emulating a valid wake-up pattern, as shown in Figure 4, is received. The Data_0 and Data_1 phases of the emulated wake-up symbol are interrupted by the Byte Start Sequence (BSS) preceding each byte in the data frame. With a data rate of 10 Mbit/s, the interruption has a maximum duration of 130 ns and does not prevent the transceiver from recognizing the wake-up pattern in the payload. For longer interruptions at lower data rates (5 Mbit/s and 2.5 Mbit/s), the wake-up pattern should be used (see Section 6.4.1.1). TJA1085 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 © NXP Semiconductors N.V. 2016. All rights reserved. 8 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler Vdif 130 ns wake-up 870 ns 870 ns +2000 0V -2000 770 870 870 ns ns ns 130 130 ns ns 5 µs 5 µs 5 µs 5 µs 015aaa343 The duration of each interruption is 130 ns. The transition time from DATA_0 to DATA_1 and vice versa is about 20 ns. The TJA1085 wake-up flag is set on receipt of the following frame payload: 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF Fig 4. Minimum bus pattern for bus wake-up via dedicated FlexRay data frame 6.4.2 Local wake-up via pin LWU Local wake-up is detected when the voltage on pin LWU is lower than Vth(wake)(LWU) for longer than tdet(wake)(LWU) (falling edge on pin LWU). When local wake-up is detected, the WU_LOCAL status bit is set and a WU interrupt is generated. At the same time, the internal biasing of this pin is switched to pull-down. If the voltage on pin LWU rises and remains above Vth(wake)(LWU) for longer than tdet(wake)(LWU) (rising edge on pin LWU), local wake-up is not detected and the biasing on pin LWU is switched to pull-up. pull-up tdet(wake)(LWU) pull-up pull-down tdet(wake)(LWU) VBAT LWU 0V td(LWUwake-INHH) INH VBAT 0V 015aaa178 Fig 5. Local wake-up timing on pin LWU 6.4.3 Wake-up via the TRXD0/1 interface If the voltage on pin TRXD0 or pin TRXD1 is LOW for longer than tdet(wake)(TRXD), a WU interrupt is generated and the WU_TRXD status bit is set. TJA1085 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 © NXP Semiconductors N.V. 2016. All rights reserved. 9 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler 6.5 Communication controller interface 6.5.1 Bus activity and idle detection The following mechanisms for activity and idle detection are valid in normal power modes: • If the absolute differential voltage on the bus lines is higher than Vi(dif)det(act) for tdet(act)(bus), activity is detected on the bus lines • If, after bus activity detection, the differential voltage on the bus lines is higher than VIH(dif), pin RXD will go HIGH • If, after bus activity detection, the differential voltage on the bus lines is lower than VIL(dif), pin RXD will go LOW • If the absolute differential voltage on the bus lines is lower than Vi(dif)det(act) for tdet(idle)(bus), then idle is detected on the bus lines (pin RXD is switched HIGH or remains HIGH) Additionally, activity and idle can be detected: • if pin TXEN is LOW for longer than tdet(act)(TXEN), activity is detected on pin TXEN • if pin TXEN is HIGH for longer than tdet(idle)(TXEN), idle is detected on pin TXEN • if pin TRXD0 or TRXD1 is LOW for longer than tdet(act)(TRXD), activity is detected on the TRXD0/1 interface • if pins TRXD0 and TRXD1 are both HIGH for longer than tdet(idle)(TRXD), idle is detected on the TRXD0/1 interface Transmitter input signals: TXD, TXEN and BGE[1] Table 3. TXD TXEN BGE VIO UV detected RXD Bus TRXD0 X H X no HIGH idle high ohmic[2] high ohmic[2] AS_Normal X X L no HIGH idle high ohmic[2] high ohmic[2] AS_Normal L L H no LOW DATA_0 LOW H L H no HIGH DATA_1 high ohmic[2] LOW ohmic[2] TRXD1 Operating mode high ohmic[2] AS_Normal high ohmic[2] AS_Normal AS_Standby,[3] AS_Sleep[3] X X X no HIGH idle high X X X yes LOW idle high ohmic[2] high ohmic[2] AS_Normal, AS_Standby,[3] AS_Sleep[3] X X X X HIGH float high ohmic[2] high ohmic[2] AS_PowerOff, AS_Reset [1] The transmitter is activated by a falling edge on pin TXD while TXEN is LOW and BGE is HIGH. [2] Internal pull-up resistor (Rpu) to VBUF. [3] BP and BM biased to GND. Table 4. Bus VIO UV detected RXD TRXD0 TRXD1 Operating mode DATA_0 no LOW LOW high ohmic[1] AS_Normal DATA_1 no HIGH high ohmic[1] LOW AS_Normal idle no HIGH high ohmic[1] high ohmic[1] AS_Normal HIGH ohmic[1] ohmic[1] X TJA1085 Product data sheet Bus as input no high high All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 AS_Standby, AS_Sleep © NXP Semiconductors N.V. 2016. All rights reserved. 10 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler Table 4. Bus as input Bus VIO UV detected RXD TRXD0 TRXD1 Operating mode DATA_0 yes LOW LOW high ohmic[1] AS_Normal LOW AS_Normal DATA_1 yes LOW high ohmic[1] ohmic[1] high ohmic[1] idle yes LOW high X yes LOW high ohmic[1] high ohmic[1] HIGH ohmic[1] ohmic[1] X [1] X high high AS_Normal AS_Standby, AS_Sleep AS_PowerOff, AS_Reset Internal pull-up resistor (Rpu) to VBUF. Table 5. TRXD0/1 interface configured as input TRXD0 TRXD1 X RXD Bus Operating mode falling edge no HIGH DATA_1 AS_Normal[1] HIGH HIGH no HIGH idle AS_Normal falling edge X X LOW DATA_0 AS_Normal[1] X falling edge yes LOW DATA_1 AS_Normal[1] HIGH HIGH yes LOW idle AS_Normal LOW LOW X LOW DATA_0 collision detected on TRXD0/1 [1] VIO UV detected Activity detected on TRXD0/TRXD1. 6.6 Bus error detection The TJA1085 provides bus error detection on each branch during data transmission. When a transmit error (TxE_BRx = 1) is detected on a branch, an EVENT_BRx interrupt is generated to notify the host. The following conditions trigger bus error detection: • • • • • Short circuit BP to BM Short-circuit BP to GND Short-circuit BM to GND Short-circuit BP to VCC or VBAT Short-circuit BM to VCC or VBAT 6.7 Interrupt generation Interrupts are generated when specific events take place or associated status bits in the General or Branch X status registers are set. When an interrupt is generated, the relevant interrupt status bit is set in the Interrupt Status register (see Table 9) and pin INTN is forced LOW. Some interrupt status bits (PWON, WU, SPI_ERROR and HC_ERROR) are reset immediately after the Interrupt Status register has been read successfully (i.e. a rising edge on SCSN with no SPI_ERROR). TJA1085 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 © NXP Semiconductors N.V. 2016. All rights reserved. 11 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler The UV_ERROR, CLAMP_ERROR, TEMP_ERROR and EVENT_BRx status bits are reset after the flag (or flags) that triggered the interrupt has been reset and a successful read operation had been performed (these two events can occur in any order). Resetting these bits triggers a further falling edge on INTN to indicate to the host that the issue that triggered the interrupt has been resolved (except in the case of EVENT_BRx if a branch wake-up event triggered the interrupt). See Section 6.10.2.3 for further details. INTN signaling conforms to the FlexRay Electrical Physical Layer specification V3.0.1 (see Ref. 1). 6.8 Operating modes The TJA1085 features five operating modes. AS_PowerOff, AS_Sleep and AS_Standby are low-power modes in which the transceiver is unable to transmit or receive data streams on the bus. In AS_PowerOff mode, only power-on reset detection is active. The SPI, the low-power receiver and wake-up detection are active in AS_Sleep mode. Undervoltage detection is enabled on VCC, VBAT and VBUF in AS_Standby and AS_Normal modes. VIO undervoltage detection is always enabled, except when the TJA1085 is in AS_PowerOff mode. In AS_Normal mode, the TJA1085 can transmit and receive data streams on the bus. Pin INH is HIGH in AS_Normal, AS_Standby and AS_Reset, and floating in AS_PowerOff and AS_Sleep. The dStarGoToSleep timer is started when the TJA1085 switches to AS_Standby or AS_Normal, or when idle is detected on the bus. The timer is halted and reset when activity is detected on the bus. 6.8.1 Operating mode transitions 6.8.1.1 AS_PowerOff The TJA1085 switches to AS_PowerOff from any mode if the internal supply to the state machine, VDIG, falls below the power-on detection threshold voltage (Vth(det)POR). It remains in AS_PowerOff until VDIG rises above the power-on recovery threshold voltage (Vth(rec)POR), when it switches to AS_Standby. Pins INTN and SDO are switched to a high-impedance state in AS_PowerOff mode. 6.8.1.2 AS_Reset The TJA1085 switches to AS_Reset from any mode if pin RSTN goes LOW with no undervoltage detected on VIO. It remains in AS_Reset until pin RSTN goes HIGH, when it switches to AS_Standby. 6.8.1.3 AS_Standby The TJA1085 switches to AS_Standby: - from AS_PowerOff when VDIG rises above the power-on recovery threshold voltage (Vth(rec)POR) - from AS_Reset when pin RSTN goes HIGH - from AS_Normal when a VCC undervoltage event is detected (VCC < Vuvd(VCC) for longer than tdet(uv)(VCC)) TJA1085 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 © NXP Semiconductors N.V. 2016. All rights reserved. 12 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler - from AS_Normal in response to a host ‘AS_Standby’ command (HC mode) - from AS_Sleep in response to a host ‘AS_Standby’ command (HC mode) - from AS_Sleep when a wake-up event is detected The TJA1085 switches from AS_Standby: - to AS_Normal when a wake-up event is detected, provided VBUF > Vuvr(VBUF) - to AS_Normal when a VCC undervoltage recovery event is detected (VCC > Vuvr(VCC) for longer than trec(uv)(VCC)), provided VBUF > Vuvr(BUF) - to AS_Normal in response to a host ‘AS_Normal’ command (HC mode) - to AS_Sleep if the dStarGoToSleep timer expires (AP mode) - to AS_Sleep if a VCC undervoltage event lasts longer than tto(uvd)(VCC) (HC mode) - to AS_Sleep in response to a host ‘AS_Sleep’ command (HC mode) 6.8.1.4 AS_Sleep A wake-up event will trigger a transition to AS_Standby (followed by a transition to AS_Normal if VBUF > Vuvr(VBUF)). The TJA1085 switches to AS_Sleep: - from AS_Standby in response to a host ‘AS_Sleep’ command (HC mode) - from AS_Standby if the dStarGoToSleep timer expires (AP mode) - from AS_Standby if a VCC undervoltage event lasts longer than tto(uvd)(VCC) (HC mode) - from AS_Normal in response to a host ‘AS_Sleep’ command (HC mode) - from AS_Normal if the dStarGoToSleep timer expires (AP mode) The TJA1085 switches from AS_Sleep: - to AS_Standby in response to a host ‘AS_Standby’ command (HC mode) - to AS_Standby when a wake-up event is detected. - to AS_Normal in response to a host ‘AS_Normal’ command (HC mode) 6.8.1.5 AS_Normal The TJA1085 switches to AS_Normal: - from AS_Standby if a VCC undervoltage recovery event is detected (VCC > Vuvr(VCC) for longer than trec(uv)(VCC)), provided VBUF > Vuvr(BUF) - from AS_Standby if a wake-up event is detected, provided VBUF > Vuvr(VBUF) for longer than trec(uv)(VBUF) - from AS_Standby or AS_Sleep in response to a host ‘AS_Normal’ command The TJA1085 switches from AS_Normal: - to AS_Standby when a VCC undervoltage event is detected (VCC < Vuvd(VCC) for longer than tdet(uv)(VCC)) TJA1085 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 © NXP Semiconductors N.V. 2016. All rights reserved. 13 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler - if the TJA1085 is in HC mode, it will switch from AS_Standby to AS_Sleep if the VCC undervoltage persists for longer than tto(uvd)(VCC) - if the TJA1085 is in AP mode, it will switch to AS_Sleep when the dStarGoToSleep timer expires - to AS_Standby in response to a host ‘AS_Standby’ command (HC mode) - to AS_Sleep in response to a host ‘AS_Sleep’ command (HC mode) - to AS_Sleep if the dStarGoToSleep timer expires (AP mode) TJA1085 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 © NXP Semiconductors N.V. 2016. All rights reserved. 14 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler 6.8.1.6 Operating mode transition diagram from any mode if VDIG < Vth(det)POR AS_PowerOff AS_Reset from any mode if RSTN goes LOW with no VIO undervoltage VDIG > Vth(rec)POR RSTN goes HIGH AS_Standby VCC undervoltage > tto(uvd)(VCC) OR host command ('Sleep') VCC undervoltage detected OR host command ('Standby') (wake-up event AND VBUF > Vuvr(VBUF)) OR (VCC undervoltage recovery AND VBUF > Vuvr(VBUF)) AS_Normal dStarGoToSleep time-out host command ('Normal') wake-up event OR host command ('Standby') AS_Sleep host command ('Sleep') dStarGoToSleep time-out Host-control mode only Autonomous-control mode only Fig 6. 015aaa170 Mode transition diagram TJA1085 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 © NXP Semiconductors N.V. 2016. All rights reserved. 15 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler 6.9 Branch operating modes Each of the four branches in the TJA1085 features six branch operating modes: • Branch_Off All branches are in Branch_Off mode when the TJA1085 is in AS_PowerOff or AS_Reset mode. The transmitter, normal receiver, low-power receiver and bus error detection are disabled. The bus pins are floating. • Branch_LowPower All branches are in Branch_LowPower mode when the TJA1085 is in AS_Standby or AS_Sleep mode. The transmitter, the normal receiver and bus error detection are disabled. The low-power receiver is active (i.e. remote wake-up is possible). The bus pins are biased to ground. • Branch_Disabled The TJA1085 switches to Branch_Disabled if an overtemperature is detected. The ‘Branch_Disabled’ and ‘Branch_Normal’ commands allow the host to enable/disable a branch without affecting the remaining branches. The transmitter, normal receiver and bus error detection are disabled. Only the low-power receiver is active (remote wake-up is possible). The bus pins are biased to Vo(idle)(BP) and Vo(idle)(BM). • Branch_Normal When a branch is in Branch_Normal, the TJA1085 will be in AS_Normal. The transmitter, normal receiver and bus error detection are active. The bus pins are biased to Vo(idle)(BP) and Vo(idle)(BM). • Branch_TxOnly1 In Branch_TxOnly1 mode, the receiver is disabled, i.e. the received data is not forwarded to the signal router. The transmitter is active and bus error detection is active. The bus pins are biased to Vo(idle)(BP) and Vo(idle)(BM). • Branch_TxOnly2 This mode is host-controlled only and is operationally identical to Branch_TxOnly1. It allows the host to switch off the receiver in response to error conditions. • Branch_FailSilent The transmitter, the low-power receiver and bus error detection are disabled. Only the receiver remains active to monitor the branch for idle or activity. Received data is not forwarded to the signal router. The bus pins are biased to Vo(idle)(BP) and Vo(idle)(BM). 6.9.1 Branch operating mode transitions Branch-related host commands can only be issued when the TJA1085 is in AS_Normal mode. 6.9.1.1 Branch_Off When the TJA1085 enters AS_PowerOff or AS_Reset, all four branches switch to Branch-Off. When the TJA1085 subsequently switches to AS_Standby, all four branches switch to Branch_LowPower. 6.9.1.2 Branch_LowPower All four branches switch to Branch_LowPower when the TJA1085 enters AS_Standby or AS_Sleep. All branches remain in this mode until the TJA1085 enters AS_Normal. When this transition happens, branches that were in Branch_Disabled before switching to Branch_LowPower return to Branch_Disabled. The remaining branches switch to Branch_Normal. TJA1085 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 © NXP Semiconductors N.V. 2016. All rights reserved. 16 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler 6.9.1.3 Branch_Disabled An overtemperature event (TEMP_HIGH flag set) triggers a transition from Branch_Normal to Branch_Disabled in all branches. If an overtemperature event triggered the transition from Branch_Normal to Branch_Disabled, all branches return to Branch_Normal when the overtemperature problem has been resolved (TEMP_WARN flag reset). The ‘Branch_Disabled’ and ‘Branch_Normal’ commands can be used to enable/disable individual branches. A host command is also available to trigger a transition from Branch_Disabled to Branch_TxOnly1 (‘Branch_TxOnly'). If a branch switches from Branch_Disabled to Branch_LowPower because the TJA1085 has entered AS_Standby or AS_Sleep, it will return to Branch_Disabled when the TJA1085 enters AS_Normal. 6.9.1.4 Branch_FailSilent A branch switches to Branch_FailSilent: - from Branch_Normal if a branch is clamped (Clamp_BRx flag set), provided clamp-detection is enabled (bit CLAMP_DET set; see Table 8) - from Branch_Normal if a transmit error (TxE_BRx = 1) is detected, provided autonomous error confinement is enabled (bit AEC set; see Table 8) - from Branch_TxOnly1 if a transmit error (TxE_BRx = 1) is detected. The branch remains in Branch_FailSilent until idle is detected on all branches, when it switches to Branch_TxOnly1 (a ‘Branch_TxOnly’ command is needed in HC mode). 6.9.1.5 Branch_TxOnly1 A branch switches to Branch_TxOnly1: - from Branch_Disabled in response to a ‘Branch_TxOnly’ command (HC mode) - from Branch_FailSilent in response to a ‘Branch_TxOnly’ command when all branches are idle (HC mode) - from Branch_FailSilent when all branches are idle (AP mode) A branch switches from Branch_TxOnly1: - to Branch_Normal when a transmission ends without error - to Branch_FailSilent if a transmit error is detected (TxE_BRx = 1) 6.9.1.6 Branch_TxOnly2 This mode is purely host controlled. A branch switches to Branch_TxOnly2 only in response to a ‘Branch_TxOnly’ command issued in Branch_Normal mode. The branch remains in Branch_TxOnly2 mode until a ‘Branch_Normal’ command is received. 6.9.1.7 Branch_Normal A branch switches to Branch_Normal: - from Branch_LowPower when the TJA1085 enters AS_Normal mode (provided it was not in Branch_Disabled before the transition to Branch_LowPower mode) TJA1085 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 © NXP Semiconductors N.V. 2016. All rights reserved. 17 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler - from Branch_TxOnly2 in response to a host ‘Branch_Normal’ command - from Branch_TxOnly1 when a transmission ends without error - from Branch_Disabled in response to a host ‘Branch_Normal’ command - from Branch_Disabled when an overtemperature is resolved (TEMP_WARN = 0), provided the overtemperature triggered the earlier transition to Branch_Disabled. A branch switches from Branch_Normal: - to Branch_FailSilent if a branch is clamped, provided clamp-detection is enabled (CLAMP_DET = 1) - to Branch_FailSilent if a transmit error is detected, provided bit AEC = 1 - to Branch_TxOnly2 if a host ‘Branch_TxOnly’ command is received - to Branch_Disabled if an overtemperature event is detected (TEMP_HIGH = 1) TJA1085 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 © NXP Semiconductors N.V. 2016. All rights reserved. 18 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler 6.9.1.8 Branch operating mode transition diagram active star switches to AS_Standby or AS_Sleep Branch_LowPower Branch_Off active star switches to AS_Normal active star switches to AS_PowerOff or AS_Reset Active Star Coupler in AS_Normal mode previous state was Branch_Disabled previous state not Branch_Disabled Branch_Disabled overtemperature detected Branch_TxOnly2 host command ('Branch_Normal') overtemperature warning inactive host command ('Branch_TxOnly') host command ('Branch_Disabled') host command ('Branch_Normal') Branch_Normal clamp detected OR transmit error with AEC = 1 host command ('Branch_TxOnly') Branch_FailSilent transmission ends without error transmit error Branch_TxOnly1 all active branches idle AND (APM flag set OR host command ('Branch_TxOnly')) 015aaa171 Fig 7. Branch mode transition diagram TJA1085 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 © NXP Semiconductors N.V. 2016. All rights reserved. 19 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler 6.10 SPI interface The TJA1085 contains a bidirectional 16-bit Serial Peripheral Interface (SPI) for communicating with a host. The SPI allows the host to configure the TJA1085 and to access error and status information. 6.10.1 Register access The SPI supports full duplex data transfer, so status information is read out on pin SDO while control data is being shifted in on pin SDI. Bit sampling is performed on the falling edge of the clock signal on pin SCLK and data is shifted on the rising edge (MSB first; see Figure 8). The clock signal must be LOW when SCSN goes LOW to initiate an SPI register access cycle. SCSN SCLK 01 02 03 04 15 16 sampled SDI SDO X floating X MSB 14 13 12 01 LSB MSB 14 13 12 01 LSB X floating 015aaa154 Fig 8. SPI register access 6.10.2 SPI registers The SPI register structure in the TJA1085 is illustrated in Figure 9. The three MSBs (bits15 to 13) contain the 3-bit register address. Bit 12 defines the selected register access as read/write or read only. If bit 12 is 1, the SPI data transfer will be read only and all data on the SDI pin will be ignored. If bit 12 is 0, data bits 11 to 0 will be written to the selected register. Bits 15 to 13: register address Bit 12: 1 = R/O (read only), 0 = R/W (read/write) 15 0 Register Select Fig 9. TJA1085 Product data sheet Data Bits 015aaa155 SPI register structure All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 © NXP Semiconductors N.V. 2016. All rights reserved. 20 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler The assignment of control and status register addresses is detailed in Table 6. Data can only be written to the Control and Configuration registers (status registers are read-only by definition). Therefore the state of bit 12 is only evaluated when these registers are being accessed. Table 6. Register map Address bits 15, 14 and 13 Write access bit 12[1] Register 000 0 =R/W, 1 = R/O Control register; see Table 7 001 1 = R/O Interrupt status register; see Table 9 010 1 = R/O General status register; see Table 10 011 1 = R/O Branch 1 status register; see Table 11 100 1 = R/O Branch 2 status register; see Table 11 101 1 = R/O Branch 3 status register; see Table 11 110 1 = R/O Branch 4 status register; see Table 11 111 0 =R/W, 1 = R/O Configuration register; see Table 8 [1] Bit 12 is assumed to be 1 for status registers The following subsections provide details of the bits in these registers and the control and status functionality assigned to each. TJA1085 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 © NXP Semiconductors N.V. 2016. All rights reserved. 21 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler 6.10.2.1 Control register The read/write Control register allows the host controller to set the operating modes and to switch the TJA1085 between HC and AP modes. Table 7. Bit Control register bit description Symbol 11:10 OPM Access Default Description R/W 00 operating mode: 00: no change 01: AS_Standby 10: AS_Sleep 11: AS_Normal 9:8 CTRL_BR1 R/W 00 branch 1 control: 00: no change 01: Branch_Normal 10: Branch_TxOnly 11: Branch_Disabled 7:6 CTRL_BR2 R/W 00 branch 2 control: 00: no change 01: Branch_Normal 10: Branch_TxOnly 11: Branch_Disabled 5:4 CTRL_BR3 R/W 00 branch 3 control: 00: no change 01: Branch_Normal 10: Branch_TxOnly 11: Branch_Disabled 3:2 CTRL_BR4 R/W 00 branch 4 control: 00: no change 01: Branch_Normal 10: Branch_TxOnly 11: Branch_Disabled 1 APM[1] R/W 1 Autonomous Power mode 0: disabled 1: enabled 0 RESET_ERROR[2] R/W 0 reset error flags and status bits 0: no change 1: reset flags/bits TJA1085 Product data sheet [1] The TJA1085 sets the APM flag at power-on, in response to a wake-up event (local, remote or TRXD), if a VCC undervoltage is detected in AS_Normal or a VIO undervoltage is detected for longer than tto(uvd)(VIO). [2] Setting the RESET_ERROR bit resets all error status bits in the General Status (bits 8 to 1) and Branch Status registers (bits 7 to 4). All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 © NXP Semiconductors N.V. 2016. All rights reserved. 22 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler 6.10.2.2 Configuration register The read/write Configuration register allows the host controller to configure a number of TJA1085 parameters and functions. Table 8. Configuration register bit description Bit Symbol Access Default Description 11 AEC R/W 0 Autonomous error confinement: 0: disabled 1: enabled 10 BFT R/W 1 Bus failure timer 0: disabled 1: enabled 9 WUD_BR1 R/W 1 wake-up detection on branch 1: 0: disabled 1: enabled 8 WUD_BR2 R/W 1 wake-up detection on branch 2: 0: disabled 1: enabled 7 WUD_BR3 R/W 1 wake-up detection on branch 3: 0: disabled 1: enabled 6 WUD_BR4 R/W 1 wake-up detection on branch 4: 0: disabled 1: enabled 5 CC_EN R/W 0 CC interface enable (TXD and TXEN inputs; RXD output): 0: disabled 1: enabled 4 TRXD_EN R/W 1 TRXD interface enable: 0: disabled 1: enabled 3 reserved always 0 2 CLAMP_DET R/W 1 clamping detection: 0: disabled 1: enabled 1 BIT_LATCHING R/W 0 status bit latching: 0: disabled 1: enabled 0 TJA1085 Product data sheet PARITY R - parity bit - odd parity (including parity bit) All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 © NXP Semiconductors N.V. 2016. All rights reserved. 23 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler Autonomous Error Confinement (AEC): Setting the AEC bit enables the autonomous error confinement feature of the TJA1085. When AEC is enabled, a bus error (TxE_BRx = 1) triggers a transition from Branch_Normal to Branch_FailSilent. AEC is disabled by default. Bus Failure Timer (BFT): Setting the BFT bit enables the bus failure timer. When the BFT is enabled, pulses shorter than tto(BFT) are ignored, resulting in more robust bus error detection. The BFT is enabled by default. Wake-up detection on branch x (WUD_BRx): Setting the WUD_BRx bit enables wake-up detection on the specified branch. Each branch in a TJA1085 star network contains a low-power receiver for detecting remote wake-up events. These events can be enabled and disabled individually. This feature makes it possible to minimize quiescent current consumption, especially in AS_Sleep mode. Wake-up detection is enabled by default on all branches. Communication Controller interface Enable (CC_EN): Setting bit CC_EN enables the communication controller interface. A communication controller can be connected to the TJA1085 when CC_EN = 1. If CC_EN = 0, the RXD output driver is switched off to minimize current consumption in AS_Normal mode. The CC interface is disabled by default. TRXD0/1 interface Enable (TRXD_EN): Setting bit TRXD_EN enables the TRXD0 and TRXD1 interfaces. When the TRXD0/1 interfaces are enabled, several TJA1085 devices can be connected together to form a single active star. If only one TJA1085 is needed at any time, the TRXD0/1 interfaces can be disabled to minimize current consumption in AS_Normal mode. The TRXD0 and TRXD1 interfaces are enabled by default. Clamp detection (CLAMP_DET): Setting bit CLAMP_DET enables clamp detection on TXEN, TRXD and on the four branches. When clamp detection is enabled, a CLAMP_ERROR interrupt is generated if clamping is detected on TXEN (CLAMP_TXEN = 1), TRXD (CLAMP_TRXD = 1) or on a branch (CLAMP_BRx). Clamp detection is enabled by default. Bit latching (BIT_LATCHING): When bit latching is enabled (BIT_LATCHING = 1), the status bits in the General and Branch X status registers reflect the latched state until the register is read. Once the register has been read, latching is released and the bits then reflect the current ‘live’ status. When bit latching is disabled, the status bits reflect the ‘live’ status at all times. Bit latching is disabled by default. TJA1085 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 © NXP Semiconductors N.V. 2016. All rights reserved. 24 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler 6.10.2.3 Interrupt Status register The Interrupt Status register is read-only. When the TJA1085 sets a bit in this register, it triggers a falling edge on pin INTN. Bits PWON, WU, SPI_ERROR and HC_ERROR are reset after a successful read operation. The remaining bits are reset after the flag (or flags) that triggered the interrupt has been reset and a successful read operation has been performed (see Section 6.7). Table 9. Interrupt status register Bit Symbol Description 11 PWON power-on detection: 0: no power-on detected 1: power-on detected 10 WU wake-up event detection (any): 0: no wake-up event detected 1: wake-up event detected 9 EVENT_BR1 wake-up or bus error detection on branch 1: 0: no wake-up or bus error detected 1: wake-up or bus error detected 8 EVENT_BR2 wake-up or bus error detection on branch 2: 0: no wake-up or bus error detected 1: wake-up or bus error detected 7 EVENT_BR3 wake-up or bus error detection on branch 3: 0: no wake-up or bus error detected 1: wake-up or bus error detected 6 EVENT_BR4 wake-up or bus error detection on branch 4: 0: no wake-up or bus error detected 1: wake-up or bus error detected 5 undervoltage detected on VBAT, VCC or VIO: UV_ERROR 0: no undervoltage detected 1: undervoltage detected 4 CLAMP_ERROR clamp error on TRXD, TXEN or branch or collision on TRXD: 0: no clamping error detected 1: clamping error detected 3 SPI_ERROR SPI communication error: 0: not detected 1: detected 2 HC_ERROR host command error: 0: not detected 1: detected 1 TEMP_ERROR overtemperature error: 0: not detected 1:detected 0 TJA1085 Product data sheet PARITY parity bit - odd parity (including parity bit) All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 © NXP Semiconductors N.V. 2016. All rights reserved. 25 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler PWON: A PWON interrupt is generated to signal a power-on event. The PWON interrupt status bit is set when the TJA1085 leaves AS_PowerOff or AS_Reset. It is reset after a successful read operation on the Interrupt Status register. WU: A WU interrupt indicates the occurrence of a wake-up event. The WU interrupt status bit is set when a wake-up event is detected on a branch (WU_BRx = 1), on TRXD0/1 (WU_TRXD = 1), or on LWU (WU_LOCAL = 1). It is reset after a successful read operation on the Interrupt Status register. EVENT_BRx: An EVENT_BRx interrupt signals the occurrence of a significant event on the relevant branch. The EVENT_BRx interrupt status bit is set when any of the following events is detected on a branch: - a wake-up event (WU_BRx = 1) - a bus error (TxE_BRx = 1) - clamping (CLAMP_BRx = 1) It is reset after the flag (or flags) that triggered the interrupt has been reset and the Interrupt Status register has been read successfully. Resetting EVENT_BRx will trigger a falling edge on INTN to indicate to the host that the event that triggered the interrupt has been resolved (except when the interrupt was triggered by a branch wake-up event). UV_ERROR: A UV_ERROR interrupt indicates that an undervoltage has occurred. The UV_ERROR interrupt status bit is set when a VBAT (UV_VBAT = 1), VCC (UV_VCC = 1) or VIO (UV_VIO = 1) undervoltage is detected. It is reset after the flag (or flags) that triggered the interrupt has been reset and the Interrupt Status register has been read successfully. Resetting UV_ERROR triggers a falling edge on INTN to indicate to the host that the undervoltage condition is no longer present. CLAMP_ERROR: A CLAMP_ERROR interrupt indicates that an input channel has become clamped or a collision has occurred on the TRXDO/1 interface. The CLAMP_ERROR interrupt status bit is set when clamping is detected on TRXD (CLAMP_TRXD = 1), on TXEN (CLAMP_TXEN = 1) or on a branch (CLAMP_BRx = 1) or if a collision is detected on TRXD0/TRXD1 (COLL_TRXD = 1). It is reset after the flag (or flags) that triggered the interrupt has been reset and the Interrupt Status register has been read successfully. Resetting CLAMP_ERROR triggers a falling edge on INTN to indicate to the host that the clamp or collision error has been corrected. SPI_ERROR: An SPI_ERROR interrupt indicates that an error has occurred during SPI communications. The SPI_ERROR interrupt status bit is set if the number of SCLK cycles generated during a LOW phase on SCSN does not equal 16. It is reset after a successful read operation on the Interrupt Status register. HC_ERROR: A HC_ERROR interrupt indicates that an invalid host command has been received. TJA1085 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 © NXP Semiconductors N.V. 2016. All rights reserved. 26 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler The HC_ERROR interrupt status bit is set when the host requests an illegal mode transition (as defined in the Section 6.8.1 and Section 6.9.1). It is reset after a successful read operation on the Interrupt Status register. TEMP_ERROR: A TEMP_ERROR interrupt signals the presence of an overtemperature condition. The TEMP_ERROR interrupt status bit is set when the temperature warning level (TEMP_WARN = 1) or temperature high level (TEMP_HIGH = 1) is exceeded. It is reset after the flag (or flags) that triggered the interrupt has been reset and the Interrupt Status register has been read successfully. Resetting TEMP_ERROR triggers a falling edge on INTN to indicate to the host that the overtemperature condition is no longer present. TJA1085 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 © NXP Semiconductors N.V. 2016. All rights reserved. 27 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler 6.10.2.4 General Status register The read-only General Status register contains status information not included in the Interrupt status register. Table 10. General status register Bit Symbol Description 11 WU_LOCAL local wake-up on pin LWU: 0: no wake-up detected 1: wake-up detected 10 WU_TRXD wake-up via TRXD0/TRXD1 0: no wake-up detected 1: wake-up detected 9 BGE_FB BGE status feedback: 0: if BGE is LOW 1: if BGE is HIGH 8 UV_VBAT VBAT undervoltage 0: no undervoltage detected 1: undervoltage detected 7 UV_VCC VCC undervoltage 0: no undervoltage detected 1: undervoltage detected 6 UV_VIO VIO undervoltage 0: no undervoltage detected 1: undervoltage detected 5 TEMP_WARN temperature warning level 0: not exceeded 1: exceeded 4 TEMP_HIGH temperature high level 0: not exceeded 1: exceeded 3 CLAMP_TRXD clamping detection on TRXD: 0: not detected 1: detected 2 CLAMP_TXEN clamping detection on TXEN: 0: not detected 1: detected 1 COLL_TRXD collision detection on TRXDO and TRXD1: 0: not detected 1:detected 0 TJA1085 Product data sheet PARITY parity bit - odd parity (including parity bit) All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 © NXP Semiconductors N.V. 2016. All rights reserved. 28 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler WU_LOCAL: WU_LOCAL is set when a local wake-up event is detected. A WU interrupt is generated. WU_LOCAL is reset after the General Status register has been read successfully or when the TJA1085 switches from AS_Normal to AS_Standby or AS_Sleep. This ensures that a new wake-up event will be detected. WU_TRXD: WU_TRXD is set when a wake-up event is detected on the TRXD0/1 interface. A WU interrupt is generated. WU_TRXD is reset after the General Status register has been read successfully or when the TJA1085 switches from AS_Normal to AS_Standby or AS_Sleep. This ensures that a new wake-up event will be detected. BGE_FB: Bit BGE_FB provides information about the voltage level on pin BGE. BGE_FB is set when the voltage on BGE is HIGH and reset when the voltage on BGE is LOW. UV_VBAT: UV_VBAT is set when a VBAT undervoltage is detected, generating a UV_ERROR interrupt. If bit latching is enabled (BIT_LATCHING = 1), UV_BAT will remain set until the General Status register has been read, after which it will reflect the current ‘live’ situation (set if VBAT < Vuvd(VBAT) for longer than tdet(uv)(VBAT) and reset if VBAT > Vuvr(VBAT) for longer than trec(uv)(VBAT)). If bit latching is not enabled, UV_BAT will reflect the ‘live’ situation at all times. UV_VCC: UV_VCC is set when a VCC undervoltage is detected, generating a UV_ERROR interrupt. If bit latching is enabled (BIT_LATCHING = 1), UV_VCC will remain set until the General Status register has been read, after which it will reflect the current ‘live’ situation (set if VCC < Vuvd(VCC) for longer than tto(uvd)(VCC) and reset if VCC > Vuvr(VCC) for longer than tto(uvr)(VCC)). If bit latching is not enabled, UV_VCC will reflect the ‘live’ situation at all times. UV_VIO: UV_VIO is set when a VIO undervoltage is detected, generating a UV_ERROR interrupt. If bit latching is enabled (BIT_LATCHING = 1), UV_VIO will remain set until the General Status register has been read, after which it will reflect the current ‘live’ situation (set if VIO < Vuvd(VIO) for longer than tto(uvd)(VIO) and reset if VIO > Vuvr(VIO) for longer than tto(uvr)(VIO)). If bit latching is not enabled, UV_VIO will reflect the ‘live’ situation at all times. When a VIO undervoltage is active, the digital inputs are disabled and the TJA1085 is unable to accept Host commands. If the VIO undervoltage persists for longer than tto(uvd)(VIO), the APM flag is set and the TJA1085 switches from Host control to Autonomous control. TJA1085 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 © NXP Semiconductors N.V. 2016. All rights reserved. 29 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler TEMP_WARN: TEMP_WARN is set when the junction temperature rises above the temperature warning level, generating a TEMP_ERROR interrupt. If bit latching is enabled (BIT_LATCHING = 1), TEMP_WARN will remain set until the General Status register has been read, after which it will reflect the current ‘live’ situation (set when Tj > Tj(warn) and reset when Tj < Tj(warn) with no activity on the bus or on the CC and TRXD0/1 interfaces). If bit latching is not enabled, TEMP_WARN will reflect the ‘live’ situation at all times. TEMP_HIGH: TEMP_HIGH is set when the junction temperature rises above the temperature high level. The output driver on the TRXD0/1 interface is disabled along with the branch transmitters (all branches switch to Branch_Disabled). A TEMP_ERROR interrupt is generated. If bit latching is enabled (BIT_LATCHING = 1), TEMP_HIGH will remain set until the General Status register has been read, after which it will reflect the current ‘live’ situation (set when Tj > Tj(high) and reset when Tj < Tj(high) with no activity on the bus or on the CC and TRXD0/1 interfaces). If bit latching is not enabled, TEMP_HIGH will reflect the ‘live’ situation at all times. CLAMP_TRXD: CLAMP_TRXD is set when the TRXD0/1 interface is configured as an input and TRXD0 or TRXD1 is clamped LOW for longer than tdetCL(TRXD). The output driver on the TRXD0/1 interface is disabled and data on the inputs is ignored. A CLAMP_ERROR interrupt is generated. If bit latching is enabled, CLAMP_TRXD will remain set until the General Status register has been read, after which it will reflect the current ‘live’ situation (set when TRXD0 or TRXD1 clamped LOW and reset when TRXD0 and TRXD1 are HIGH). If bit latching is not enabled, CLAMP_TRXD will reflect the ‘live’ situation at all times. CLAMP_TXEN: CLAMP_TXEN is set when the TXEN is clamped LOW for longer than tdetCL(TXEN). Data on TXD/TXEN is ignored and a CLAMP_ERROR interrupt is generated. If bit latching is enabled, CLAMP_TXEN will remain set until the General Status register has been read, after which it will reflect the current ‘live’ situation (set when TXEN clamped LOW and reset when TXEN is HIGH). If bit latching is not enabled, CLAMP_TXEN will reflect the ‘live’ situation at all times. COLL_TRXD: COLL_TRXD is set when a collision is detected on the TRXD0/1 interface (TRXD0 and TRXD1 LOW for longer than tdet(col)(TRXD)). A CLAMP_ERROR interrupt is generated. COLL_TRXD is reset once the General Status register has been read. TJA1085 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 © NXP Semiconductors N.V. 2016. All rights reserved. 30 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler 6.10.2.5 Branch X status registers There is a dedicated read-only status register for each branch, i.e. there are four Branch X status registers in total. Each register contains relevant status information of a branch. Table 11. Branch X status register Bit Symbol Description 11-9 STATE_BRx state of active branch: 000: Branch_Normal mode 001: Branch_Disabled mode 010: Branch_LowPower mode 011: Branch_TxOnly_2 mode 100: Branch_FailSilent mode 101: Branch_TxOnly_1 mode 8 WU_BRx wake-up status 0: no wake-up detected 1: wake-up detected 7 reserved always 0 6 TxE_BRx transmit error on branch 0: not detected 1: detected 5 reserved always 0 4 CLAMP_BRx clamp detection on branch 0: not detected 1: detected TJA1085 Product data sheet 3 reserved always 0 2 reserved always 1 1 reserved always 0 0 PARITY parity bit - odd parity (including parity bit) All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 © NXP Semiconductors N.V. 2016. All rights reserved. 31 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler STATE_BRx: Bits STATE_BRx indicate the current branch operating mode. WU_BRx: WU_BRx is set when a remote wake-up event is detected on a branch. A WU interrupt is generated along with an EVENT_BRx interrupt to indicate the branch where the wake-up pattern or dedicated data frame was detected. WU_BRx is reset after the Branch Status register has been read successfully or when the TJA1085 switches from AS_Normal to AS_Standby or AS_Sleep. This ensures that a new wake-up event will be detected. TxE_BRx: TxE_BRx is set when a transmit error is detected on a branch, generating an EVENT_BRx interrupt. A transmit error is detected when there is a mismatch between the transmitted and received signals. If bit latching is enabled (BIT_LATCHING = 1), TxE_BRx will remain set until the register has been read, after which it is reset if no mismatch is found between transmitted and received signals or the branch leaves Branch_Normal. If bit latching is not enabled, TxE_BRx is reset if no mismatch is found in a data frame or the branch leaves Branch_Normal. CLAMP_BRx: CLAMP_BRx is set when a branch is clamped for longer than tdetCL(bus), generating a CLAMP_ERROR interrupt along with an EVENT_BRx interrupt to indicate the branch. If bit latching is enabled (BIT_LATCHING = 1), CLAMP_BRx will remain set until the register has been read, after which it is reset when idle is detected on the branch. If bit latching is not enabled, CLAMP_BRx is reset when idle is detected on the branch. TJA1085 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 © NXP Semiconductors N.V. 2016. All rights reserved. 32 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler 7. Limiting values Table 12. Limiting values In accordance with the Absolute Maximum Rating System (IEC 60134). All voltages are referenced to GND. Symbol Parameter Conditions [1] Min Max Unit 0.3 +48 V VBAT battery supply voltage during load dump (400 ms max.) 0.3 +60 V IINH current on pin INH AS_Normal, AS_Standby or AS_Reset 1 0 mA Vx voltage on pin x[1] on pins VCC, VBUF, VIO, TRXD0, TRXD1, BGE, TXD, TXEN, RSTN, INTN, SCSN, SCLK, SDI, SDO 0.3 +5.5 V on pins INH, LWU 0.3 VBAT + 0.3 V on pin RXD 0.3 min(VIO + 0.3, 5.5) V on any BM/BP pin with respect to other BP/BM pins and GND 60 +60 V IO(LWU) transient voltage Vtrt Tamb 15 - mA [2] 100 - V [3] - 75 V [4] 150 - V [5] - 100 V 40 +125 C output current on pin LWU on pins LWU, VBAT, BP and BM ambient temperature Tvj virtual junction temperature Tstg storage temperature VESD electrostatic discharge voltage [6] IEC 61000-4-2 (150 pF, 330 ) 40 +150 C 55 +150 C [7] 6.0 +6.0 kV on pin LWU to GND [8] 6.0 +6.0 kV on pin VBAT to GND [9] 6.0 +6.0 kV 8.0 +8.0 kV 6.0 +6.0 kV 4.0 +4.0 kV 200 +200 V 1000 +1000 V on pins BP and BM to GND Human Body Model (HBM); 100 pF, 1.5 k [10] on pins BP and BM to GND on pins LWU and VBAT to GND [11] on any other pin Machine Model (MM); 200 pF, 0.75 H, 10  [12] on any pin Charged Device Model (CDM); field Induced charge; 4 pF on any pin [13] [1] The device can sustain voltages up to the specified values over the product lifetime, provided applied voltages (including transients) never exceed these values. [2] According to ISO7637, test pulse 1, class C; verified by an external test house. [3] According to ISO7637, test pulse 2a, class C; verified by an external test house. [4] According to ISO7637, test pulse 3a, class C; verified by an external test house. [5] According to ISO7637, test pulse 3b, class C; verified by an external test house. [6] In accordance with IEC 60747-1. An alternative definition of Tvj is: Tvj = Tamb + P  Rth(j-a), where Rth(j-a) is a fixed value used in the calculation of Tvj. The rating for Tvj limits the allowable combinations of power dissipation (P) and ambient temperature (Tamb). TJA1085 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 © NXP Semiconductors N.V. 2016. All rights reserved. 33 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler [7] According to IEC TS 62228 (2007), Section 4.3; DIN EN 61000-4-2; verified by an external test house. The test result is equal to or better than 6 kV (unaided). [8] With 3.3 k in series. [9] With 100 nF from VBAT to GND. [10] According to AEC-Q100-002. [11] Guaranteed only when all n.c. pins are connected to GND. [12] According to AEC-Q100-003. [13] According to AEC-Q100-011 Rev-C1. The classification level is C6. 8. Thermal characteristics Table 13. Symbol Thermal characteristics Parameter Rth(j-a) thermal resistance from junction to ambient Rth(j-c) thermal resistance from junction to case [1] [1] Conditions Typ Unit in free air 24 K/W in free air 2.5 K/W TJA1085 mounted on a JEDEC 2s2p board with 36 vias between layer 1 and layer 2; via diameter: 0.5 mm, wall thickness: 18 m. TJA1085 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 © NXP Semiconductors N.V. 2016. All rights reserved. 34 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler 9. Static characteristics Table 14. Static characteristics All parameters are guaranteed for VBAT = 4.45 V to 60 V; VCC = 4.45 V to 5.25 V; VBUF = 4.45 V to 5.25 V;VIO = 2.55 V to 5.25 V; Tvj = 40 C to +150 C; Cbus = 100 pF; Rbus = 40  to 55 ; CRXD = 15 pF and CTRXD0 = CTRXD1 = 50 pF unless otherwise specified. All voltages are defined with respect to ground; positive currents flow into the IC. Symbol Parameter Conditions Min Typ Max Unit Power-on reset for VDIG Vth(det)POR power-on reset detection threshold voltage of internal digital circuitry 3 - 3.4 V Vth(rec)POR power-on reset recovery threshold voltage of internal digital circuitry 3.1 - 3.5 V Vhys(POR) power-on reset hysteresis voltage of internal digital circuitry 100 500 mV V(VCC-VDIG) voltage difference between VCC and VDIG VCC = 4.45 V; VBAT = VBUF = 0 V - - 1.0 V V(VBAT-VDIG) voltage difference between VBAT and VDIG VBAT = 4.45 V; VCC = VBUF = 0 V - - 1.0 V V(VBUF-VDIG) voltage difference between VBUF and VDIG VBUF = 4.45 V; VCC = VBAT = 0 V - - 1.0 V Supply: pin VBAT VBAT battery supply voltage operating range 4.75 - 60 V IBAT battery supply current AS_Normal; no load on INH - 0.1 1 mA AS_Standby; no load on INH; wake-up enabled on all branches - 50 100 A AS_Sleep; wake-up enabled on all branches - 50 100 A AS_Sleep; wake-up enabled on all branches; Tvj  85 C - 50 90 A AS_Sleep; wake-up disabled on all branches - 25 55 A AS_Sleep; wake-up disabled on all branches; Tvj  85 C - 25 45 A Vuvd undervoltage detection voltage 4.45 - 4.715 V Vuvr undervoltage recovery voltage 4.475 - 4.74 V Vuvhys undervoltage hysteresis voltage 25 - 290 mV 4.75 - 5.25 V Supply: pins VCC1 and VCC2 (connected on the PCB) VCC TJA1085 Product data sheet supply voltage operating range All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 © NXP Semiconductors N.V. 2016. All rights reserved. 35 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler Table 14. Static characteristics …continued All parameters are guaranteed for VBAT = 4.45 V to 60 V; VCC = 4.45 V to 5.25 V; VBUF = 4.45 V to 5.25 V;VIO = 2.55 V to 5.25 V; Tvj = 40 C to +150 C; Cbus = 100 pF; Rbus = 40  to 55 ; CRXD = 15 pF and CTRXD0 = CTRXD1 = 50 pF unless otherwise specified. All voltages are defined with respect to ground; positive currents flow into the IC. Symbol ICC Parameter Conditions supply current Min Typ Max Unit AS_Normal; VTXEN = 0 V; VBGE = VIO; Rbus = 45 ; all branches in Branch_Normal [1] - 180 210 mA AS_Normal; VTXEN = VIO; VBGE = 0 V; Rbus = 45 ; all branches in Branch_Normal and/or Branch_Disabled [1] - - 80 mA AS_Standby [1][2] - 4 35 A AS_Standby; Tvj  85 C [1][2] - 4 15 A AS_Sleep, AS_Reset [1][2] - 0 30 A AS_Sleep, AS_Reset; Tvj  85 C [1][2] - 0 10 A Vuvd undervoltage detection voltage 4.45 - 4.715 V Vuvr undervoltage recovery voltage 4.475 - 4.74 V Vuvhys undervoltage hysteresis voltage 25 - 290 mV 5.5 V  VBAT  60 V; VCC  Vuvd(VCC) 4.5 - 5.25 V 4.5 V  VBAT  5.5 V; VCC  Vuvd(VCC) 3.5 - 5.25 V Supply: pins VBUF1 and VBUF2 (connected on the PCB) VBUF supply voltage on pin VBUF V(VCC-VBUF) voltage difference between VCC and VBUF VCC  Vuvr(VCC) 0 - 0.25 V Ich(VBAT-VBUF) charge current from VBAT to VBUF 5.5 V  VBAT  60 V; VCC  Vuvd(VCC); 0 V  VBUF  4 V 200 100 30 A Vuvd undervoltage detection voltage 4.2 - 4.474 V Vuvr undervoltage recovery voltage 4.225 - 4.499 V Vuvhys undervoltage hysteresis voltage 25 - 299 mV Supply: pin VIO VIO supply voltage on pin VIO operating range 2.8 - 5.25 V IIO supply current on pin VIO AS_Normal; VTXD = VIO - - 1000 A AS_Standby; AS_Sleep; AS_PowerOff; VSCSN = VTXEN = VRSTN = VVIO - 2 7 A from digital input pin to VIO; AS_PowerOff; VTXEN = VTXD = VBGE = VSCSN = VSCLK = VSDI = VRSTN = 5.25 V; VCC = VIO = 0 V 5 - +5 A Ir TJA1085 Product data sheet reverse current All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 © NXP Semiconductors N.V. 2016. All rights reserved. 36 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler Table 14. Static characteristics …continued All parameters are guaranteed for VBAT = 4.45 V to 60 V; VCC = 4.45 V to 5.25 V; VBUF = 4.45 V to 5.25 V;VIO = 2.55 V to 5.25 V; Tvj = 40 C to +150 C; Cbus = 100 pF; Rbus = 40  to 55 ; CRXD = 15 pF and CTRXD0 = CTRXD1 = 50 pF unless otherwise specified. All voltages are defined with respect to ground; positive currents flow into the IC. Symbol Parameter Vuvd Conditions Min Typ Max Unit undervoltage detection voltage 2.55 - 2.765 V Vuvr undervoltage recovery voltage 2.575 - 2.79 V Vuvhys undervoltage hysteresis voltage 25 - 240 mV 0.7VIO - 5.5 V Pin TXEN VIH HIGH-level input voltage AS_Normal VIL LOW-level input voltage AS_Normal 0.3 - 0.3VIO V IIH HIGH-level input current VTXEN = VIO 2 - +2 A IIL LOW-level input current VTXEN = 0.3VIO 300 - 50 A Pin TXD VIH HIGH-level input voltage AS_Normal 0.6VIO - 5.5 V VIL LOW-level input voltage AS_Normal 0.3 - 0.4VIO V Rpd pull-down resistance to GND 50 150 400 k - - 10 pF [3] input capacitance with respect to all other pins at ground; VTXD = 100 mV; f = 5 MHz VIH HIGH-level input voltage AS_Normal 0.7VIO - 5.5 V VIL LOW-level input voltage AS_Normal 0.3 - 0.3VIO V Rpd pull-down resistance to GND 50 150 400 k IOH HIGH-level output current VRXD = VIO  0.4 V 15 - 1 mA IOL LOW-level output current VRXD = 0.4 V 1 - 15 mA VOH HIGH-level output voltage IOH(RXD) = 1 mA VIO  0.4 - VIO V VOL LOW-level output voltage IOL(RXD) = 1 mA - - 0.4 V VO output voltage when undervoltage on VIO; VCC  4.75 V; RL = 100 k to GND - - 500 mV VCC = VBAT = VBUF = 0 V; RL = 100 k to VIO VIO  500 - VIO mV Ci Pin BGE Pin RXD Pin RSTN VIH HIGH-level input voltage 0.7VIO - 5.5 V VIL LOW-level input voltage 0.3 - 0.3VIO V IIH HIGH-level input current VRSTN = VIO 1 - +1 A IIL LOW-level input current VRSTN = 0.3VIO 300 - 30 A V Pins TRXD0 and TRXD1 VIH HIGH-level input voltage 0.7VBUF - 5.5 VIL LOW-level input voltage 0.3 - 0.3VBUF V VOL LOW-level output voltage 0.3 - +0.8 TJA1085 Product data sheet Rpu = 200  All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 V © NXP Semiconductors N.V. 2016. All rights reserved. 37 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler Table 14. Static characteristics …continued All parameters are guaranteed for VBAT = 4.45 V to 60 V; VCC = 4.45 V to 5.25 V; VBUF = 4.45 V to 5.25 V;VIO = 2.55 V to 5.25 V; Tvj = 40 C to +150 C; Cbus = 100 pF; Rbus = 40  to 55 ; CRXD = 15 pF and CTRXD0 = CTRXD1 = 50 pF unless otherwise specified. All voltages are defined with respect to ground; positive currents flow into the IC. Symbol Parameter Conditions [3] Min Typ Max Unit - - 15 pF 2.5 5 10 k Ci input capacitance with respect to all other pins at GND; VTXD = 100 mV; f = 5 MHz Rpu pull-up resistance to VBUF VIH(dif) differential HIGH-level input voltage AS_Normal; 10 V  Vcm  +15 V [4] 150 - 300 mV VIL(dif) differential LOW-level input voltage AS_Normal; 10 V  Vcm  +15 V [4] 300 - 150 mV AS_Standby; AS_Sleep; 10 V  Vcm  +15 V [4] 400 - 125 mV Vi(dif)(H-L) differential input voltage difference between HIGH-level and LOW-level Vcm = 2.5 V; AS_Normal [4] 30 - +30 mV VOH(dif) differential HIGH-level output voltage 4.75 V  VBUF  5.25 V 900 - 2000 mV 4.45 V  VBUF  5.25 V 700 - 2000 mV differential LOW-level output 4.75 V  VBUF  5.25 V voltage 4.45 V  VBUF  5.25 V 2000 - 900 mV 2000 - 700 mV idle output voltage on pin BP Branch_Normal Pins BP and BM VOL(dif) Vo(idle)(BP) Vo(idle)(BM) idle output voltage on pin BM 0.4VBUF - 0.6VBUF V Branch_LowPower 0.1 +0.1 Branch_Normal 0.4VBUF - 0.6VBUF V Branch_LowPower 0.1 - +0.1 V - V Io(idle)BP idle output current on pin BP 60 V  VBP  +60 V; no bus load 7.5 - +7.5 mA Io(idle)BM idle output current on pin BM 60 V  VBM  +60 V; no bus load 7.5 - +7.5 mA Vo(idle)(dif) differential idle output voltage 25 0 +25 mV Vi(dif)det(act) activity detection differential input voltage (absolute value) 150 - 300 mV Vcm(bus)(DATA_0) DATA_0 bus common-mode Branch_Transmit voltage 0.4VBUF - 0.65  VBUF V Vcm(bus)(DATA_1) DATA_1 bus common-mode Branch_Transmit voltage 0.4VBUF - 0.65  VBUF V Ri input resistance Rbus =   10 20 40 k Ri(dif)(BP-BM) differential input resistance between pin BP and pin BM Rbus =   20 40 80 k Zo(eq)TX transmitter equivalent output Cbus = 100 pF; Rbus = 40  or impedance 100  [5] 10 - 600  Ci(BP) input capacitance on pin BP with respect to all other pins at GND; VBP = 100 mV; f = 5 MHz [3] - - 15 pF Ci(BM) input capacitance on pin BM with respect to all other pins at GND; VBM = 100 mV; f = 5 MHz [3] - - 15 pF Ci(dif)(BP-BM) differential input capacitance VBP = 100 mV; VBM = 100 mV; between pin BP and pin BM f = 5 MHz [3] - - 5 pF TJA1085 Product data sheet AS_Normal; 10 V  Vcm  +15 V All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 [4] © NXP Semiconductors N.V. 2016. All rights reserved. 38 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler Table 14. Static characteristics …continued All parameters are guaranteed for VBAT = 4.45 V to 60 V; VCC = 4.45 V to 5.25 V; VBUF = 4.45 V to 5.25 V;VIO = 2.55 V to 5.25 V; Tvj = 40 C to +150 C; Cbus = 100 pF; Rbus = 40  to 55 ; CRXD = 15 pF and CTRXD0 = CTRXD1 = 50 pF unless otherwise specified. All voltages are defined with respect to ground; positive currents flow into the IC. Symbol Parameter Conditions Min Typ Max Unit ILI(BP) input leakage current on pin BP AS_PowerOff; VBP = VBM; 0 V  VBP  5 V 5 0 +5 A 1600 - +1600 A 5 0 +5 A 1600 - +1600 A loss of ground; VBP = VBM = 0 V; all other pins connected to 16 V via 0 ILI(BM) input leakage current on pin BM AS_PowerOff; VBP = VBM; 0 V  VBM  5 V loss of ground; VBP = VBM = 0 V; all other pins connected to 16 V via 0 IO(sc) short-circuit output current (absolute value) [3] [3] on pin BP; 5 V  VBP  +60 V; Rsc  1 ; tsc  1500 s [6][8] - - 72 mA on pin BP; 5 V  VBP  +27 V; Rsc  1 ; tsc  1500 s [6][8] - - 60 mA on pin BM; 5 V  VBM  +60 V; Rsc  1 ; tsc  1500 s [6][8] - - 72 mA on pin BM; 5 V  VBM  +27 V; Rsc  1 ; tsc  1500 s [6][8] - - 60 mA on pins BP and BM; VBP = VBM; Rsc  1 ; tsc  1500 s [7][8] - - 60 mA Pin INH VOH HIGH-level output voltage IINH = 0.2 mA: AS_Normal; AS_Standby; AS_Reset VBAT  0.8 - VBAT V IL leakage current AS_Sleep; AS_PowerOff 3 - +3 A IO(sc) short-circuit output current VINH = 0 V; AS_Normal; AS_Standby; AS_Reset 7 - 1 mA Vth(wake)LWU wake-up threshold voltage on pin LWU AS_Sleep; AS_Standby 2 - 3.75 V Vhys(wake)LWU wake-up hysteresis voltage on pin LWU 0.3 - 1.2 V IIL LOW-level input current VLWU = 2 V for t > tdet(wake)(LWU) 3 - 11 A VLWU = 0 V 2 - 0.3 A IIH HIGH-level input current VLWU = 3.75 V for t > tdet(wake)(LWU)  V  VBAT  +60 V 11 - 3 A VLWU = VBAT 0.2 - 1.2 A Pin LWU Pin SDO VOH HIGH-level output voltage IOH(SDO) = 0.5 mA VIO  0.4 - VIO V VOL LOW-level output voltage IOL(SDO) = 0.5 mA - - 0.4 V IOH HIGH-level output current VSDO = VIO  0.4 V 8 2 0.5 mA IOL LOW-level output current VSDO = 0.4 V 0.5 2 8 mA IL leakage current SCSN HIGH 5 - +5 A TJA1085 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 © NXP Semiconductors N.V. 2016. All rights reserved. 39 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler Table 14. Static characteristics …continued All parameters are guaranteed for VBAT = 4.45 V to 60 V; VCC = 4.45 V to 5.25 V; VBUF = 4.45 V to 5.25 V;VIO = 2.55 V to 5.25 V; Tvj = 40 C to +150 C; Cbus = 100 pF; Rbus = 40  to 55 ; CRXD = 15 pF and CTRXD0 = CTRXD1 = 50 pF unless otherwise specified. All voltages are defined with respect to ground; positive currents flow into the IC. Symbol Parameter Conditions Min Typ Max Unit VO output voltage when undervoltage on VIO; VCC  4.75 V; RL = 100 k to GND - - 500 mV VCC = VBAT = VBUF = 0 V; RL = 100 k to GND - - 500 mV Pin SDI VIH HIGH-level input voltage 0.7VIO - 5.5 V VIL LOW-level input voltage 0.3 - 0.3VIO V Rpd pull-down resistance 50 150 400 k to GND Pin SCSN VIH HIGH-level input voltage 0.7VIO - 5.5 V VIL LOW-level input voltage 0.3 - 0.3VIO V IIH HIGH-level input current VSCSN = VIO 1 - +1 A IIL LOW-level input current VSCSN = 0.3VIO 15 - 3 A Pin SCLK VIH HIGH-level input voltage 0.7VIO - 5.5 V VIL LOW-level input voltage 0.3 - 0.3VIO V Rpd pull-down resistance to GND 50 150 400 k VOL LOW-level output voltage IOL(INTN) = 0.5 mA - - 0.4 V VO output voltage when undervoltage on VIO; VCC  4.75 V; RL = 100 k to GND - - 500 mV VCC = VBAT = VBUF = 0 V; RL = 100 k to GND - - 500 mV Pin INTN Temperature protection Tj(warn) warning junction temperature 155 - 190 C Tj(high) high junction temperature 165 - 200 C Tj(high-warn) difference between high and warning junction temperature 10 - 45 C [1] Specified current is the sum of currents ICC1 and ICC2. [2] These values are guaranteed under the condition that the internal digital block is supplied from VBAT. [3] Guaranteed by design. [4] Vcm is the BP/BM common mode voltage. [5] Zo(eq)(TX) = 50   (Vbus(100) - Vbus(40))/(2.5  Vbus(40) - Vbus(100)) where: - Vbus(100) is the differential output voltage on a load of 100 and 100 pF in parallel - Vbus(40) is the differential output voltage on a load of 40  and 100 pF in parallel when driving a DATA_1. [6] Rsc is the short-circuit resistance; voltage difference between bus pins BP and BM is 60 V max. [7] Rsc is the short-circuit resistance between BP and BM. [8] tsc is the minimum duration of the short-circuit TJA1085 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 © NXP Semiconductors N.V. 2016. All rights reserved. 40 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler 10. Dynamic characteristics Table 15. Dynamic characteristics All parameters are guaranteed for VBAT = 4.45 V to 60 V; VCC = 4.45 V to 5.25 V; VBUF = 4.45 V to 5.25 V; VIO = 2.55 V to 5.25 V; Tvj = 40 C to + 150 C; Rbus = 40 , Cbus = 100 pF; CRXD = 15 pF; CTRXD0 = CTRXD1 = 50 pF and CSDO = 50 pF unless otherwise specified. All voltages are defined with respect to ground; positive currents flow into the IC. Symbol Parameter Conditions Min Typ Max Unit Undervoltage detection tdet(uv)(VBAT) undervoltage detection time on pin VBAT VBAT = 4.35 V 5 - 150 s trec(uv)(VBAT) undervoltage recovery time on pin VBAT VBAT = 4.85 V 5 - 150 s tdet(uv)(VCC) undervoltage detection time on pin VCC VCC = 4.35 V 5 - 100 s trec(uv)(VCC) undervoltage recovery time on pin VCC VCC = 4.85 V 5 - 100 s tdet(uv)(VBUF) undervoltage detection time on pin VBUF VBUF = 4.10 V 5 - 100 s trec(uv)(VBUF) undervoltage recovery time on pin VBUF VBUF = 4.6 V 5 - 100 s tdet(uv)(VIO) undervoltage detection time on pin VIO VIO = 2.45 V 5 - 100 s trec(uv)(VIO) undervoltage recovery time on pin VIO VIO = 2.9 V 5 - 100 s tto(uvd)(VCC) undervoltage detection time-out time on pin VCC 100 - 670 ms tto(uvd)(VIO) undervoltage detection time-out time on pin VIO 100 - 670 ms tto(uvr)(VCC) undervoltage recovery time-out time on pin VCC 1 - 5 ms tto(uvr)(VIO) undervoltage recovery time-out time on pin VIO 1 - 5 ms tcy(clk) clock cycle time 0.5 - 100 s tSPILEAD SPI enable lead time 250 - - ns tSPILAG SPI enable lag time 250 - - ns tsu(D) data input set-up time 150 - - ns th(D) data input hold time 100 - - ns td(SCLK-SDO) delay time from SCLK to SDO - - 200 ns tWH(S) chip select pulse width HIGH 10 - - s td(SCSNHL-SDOL) SCSN falling edge to SDO LOW-level delay time - - 250 ns td(SCSNLH-SDOZ) SCSN rising edge to SDO three-state delay time - - 500 ns SPI TJA1085 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 © NXP Semiconductors N.V. 2016. All rights reserved. 41 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler Table 15. Dynamic characteristics …continued All parameters are guaranteed for VBAT = 4.45 V to 60 V; VCC = 4.45 V to 5.25 V; VBUF = 4.45 V to 5.25 V; VIO = 2.55 V to 5.25 V; Tvj = 40 C to + 150 C; Rbus = 40 , Cbus = 100 pF; CRXD = 15 pF; CTRXD0 = CTRXD1 = 50 pF and CSDO = 50 pF unless otherwise specified. All voltages are defined with respect to ground; positive currents flow into the IC. Symbol Parameter Conditions delay time from TXD to bus AS_Normal; see Figure 10 Min Typ Max Unit - - 75 ns - - 75 ns 5 - +5 ns - - 60 ns Transmit path td(TXD-bus) [1] DATA_0 DATA_1 td(TXD-bus) td(TXD-TRXD) delay time difference from TXD to between DATA_0 and DATA_1; bus AS_Normal [1] delay time from TXD to TRXD [1] AS_Normal; see Figure 10 [2] DATA_0 DATA_1 - - 60 ns 5 - +5 ns DATA_0 - - 75 ns DATA_1 - - 75 ns 5 - +5 ns td(TXD-TRXD) delay time difference from TXD to between DATA_0 and DATA_1; TRXD AS_Normal td(TRXD-bus) delay time from TRXD to bus [1] AS_Normal; see Figure 12 td(TRXD-bus) delay time difference from TRXD to bus between DATA_0 and DATA_1; AS_Normal td(TXEN-busact) delay time from TXEN to bus active AS_Normal; from idle to active - - 150 ns td(TXEN-busidle) delay time from TXEN to bus idle AS_Normal; from active to idle - - 150 ns td(TXEN-RXD) delay time from TXEN to RXD - - 150 ns td(TRXD-busact) delay time from TRXD to bus active tdet(act)(TRXD) + td(TRXD-bus) - - 275 ns td(TRXD-busidle) delay time from TRXD to bus idle tdet(idle)(TRXD) + td(TRXD-bus) - - 275 ns td(busact-TRXD) delay time from bus active to TRXD tdet(act)(bus) + td(bus-TRXD) - - 285 ns td(busidle-TRXD) delay time from bus idle to TRXD tdet(idle)(bus) + td(bus-TRXD) - - 275 ns td(TRXDact-RXD) delay time from TRXD activity detection to RXD - - 260 ns td(busact-bus) delay time from bus active to bus from one branch to another, including activity detection time; tdet(act)(bus) + td(bus-bus) - - 310 ns td(busidle-bus) delay time from bus idle to bus from one branch to another, including idle detection time; tdet(idle)(bus) + td(bus-bus) - - 300 ns delay time from bus to TRXD AS_Normal; see Figure 11 DATA_0 - - 75 ns DATA_1 - - 75 ns 5 - +5 ns [2] tdet(act)(TRXD) + td(TRXD-RXD) Receive path td(bus-TRXD) td(bus-TRXD) TJA1085 Product data sheet delay time difference from bus to TRXD between DATA_0 and DATA_1 AS_ Normal; Vcm = 2.5 V Rpu = 200  All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 [2] [3] © NXP Semiconductors N.V. 2016. All rights reserved. 42 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler Table 15. Dynamic characteristics …continued All parameters are guaranteed for VBAT = 4.45 V to 60 V; VCC = 4.45 V to 5.25 V; VBUF = 4.45 V to 5.25 V; VIO = 2.55 V to 5.25 V; Tvj = 40 C to + 150 C; Rbus = 40 , Cbus = 100 pF; CRXD = 15 pF; CTRXD0 = CTRXD1 = 50 pF and CSDO = 50 pF unless otherwise specified. All voltages are defined with respect to ground; positive currents flow into the IC. Symbol Parameter Conditions Min Typ Max Unit td(bus-RXD) delay time from bus to RXD AS_Normal; see Figure 11 - - 75 ns - - 75 ns 5 - +5 ns DATA_0 - - 60 ns DATA_1 - - 60 ns 5 - +5 ns DATA_0 - 30 60 ns DATA_1 - 30 60 ns - - 100 ns DATA_0 DATA_1 td(bus-RXD) td(TRXD-RXD) delay time difference from bus to RXD between DATA_0 and DATA_1 AS_ Normal; Vcm = 2.5 V delay time from TRXD to RXD AS_Normal; see Figure 12 td(TRXD-RXD) delay time difference from TRXD to RXD between DATA_0 and DATA_1 AS_ Normal td(TXD-RXD) delay time from TXD to RXD AS_Normal; see Figure 10 td(bus-bus) delay time from bus to bus [3] [1] from one branch to another AS_Normal; see Figure 11 DATA_0 DATA_1 td(bus-bus) [2] - - 100 ns 8 - +8 ns delay time difference from bus to bus between DATA_0 and DATA_1 AS_ Normal bus differential rise time DATA_0 to DATA_1; 20 % to 80 % 6 - 18.75 ns DATA_0 to idle; 300 mV to 30 mV - - 30 DATA_1 to DATA_0; 20 % to 80 % 6 - 18.75 ns DATA_1 to idle; 300 mV to 30 mV - - 30 ns idle to DATA_0; 30 mV to 300 mV - - 30 ns difference between differential rise and fall time between DATA_0 and DATA_1 3 - +3 ns tr rise time 20 % to 80 % - - 9 ns tf fall time 80 % to 20 % - - 9 ns t(r+f) sum of rise and fall time 20 % to 80 % and 80 % to 20 % - - 13 ns t(r-f) difference between rise and fall time 20 % to 80 % 5 - +5 ns 5 - 20 s Bus slope tr(dif)(bus) tf(dif)(bus) t(r-f)(dif) bus differential fall time ns Pin RXD Pin RSTN tdet(rst) reset detection time Pin BGE td(BGE-busact) delay time from BGE to bus active activity detected on TXEN - - 100 ns td(BGE-busidle) delay time from BGE to bus idle activity detected on TXEN - - 100 ns TJA1085 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 © NXP Semiconductors N.V. 2016. All rights reserved. 43 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler Table 15. Dynamic characteristics …continued All parameters are guaranteed for VBAT = 4.45 V to 60 V; VCC = 4.45 V to 5.25 V; VBUF = 4.45 V to 5.25 V; VIO = 2.55 V to 5.25 V; Tvj = 40 C to + 150 C; Rbus = 40 , Cbus = 100 pF; CRXD = 15 pF; CTRXD0 = CTRXD1 = 50 pF and CSDO = 50 pF unless otherwise specified. All voltages are defined with respect to ground; positive currents flow into the IC. Symbol Parameter Conditions Min Typ Max Unit Activity detection tdet(act)(TXEN) activity detection time on pin TXEN AS_Normal; from idle to active 20 - 70 ns tdet(idle)(TXEN) idle detection time on pin TXEN AS_Normal; from active to idle 20 - 70 ns tdet(act-idle) difference between active and idle detection time on pin TXEN AS_Normal 25 - +25 ns on pin TRXD pins TRXD0 and TRXD1; AS_Normal 50 - +50 ns on bus AS_Normal 50 - +50 ns tdet(act)(TRXD) activity detection time on pin TRXD pins TRXD0 and TRXD1; AS_Normal; from idle to active 100 - 200 ns tdet(idle)(TRXD) idle detection time on pin TRXD pins TRXD0 and TRXD1; AS_Normal; from active to idle 100 - 200 ns tdet(act)(bus) activity detection time on bus pins AS_Normal; from idle to active 100 - 210 ns tdet(idle)(bus) idle detection time on bus pins AS_Normal; from active to idle 100 - 200 ns tdet(int) interrupt detection time from interrupt detection to falling edge on INTN - - 100 s tINTNH(min) minimum INTN HIGH time 10 - 40 s Wake-up detection tdet(wake)DATA_0 DATA_0 wake-up detection time 10 V  Vcm  +15 V [3] 1 - 4 s tdet(wake)idle idle wake-up detection time 10 V  Vcm  +15 V [3] 1 - 4 s tdet(wake)tot total wake-up detection time 10 V  Vcm  +15 V [3] 50 - 115 s tsup(int)wake wake-up interruption suppression 10 V  Vcm  +15 V time [3] 130 - 1000 ns td(bus)(wake-act) bus delay time from wake-up to active - - 18 s tdet(wake)(LWU) wake-up detection time on pin LWU 2.9 - 175 s tdet(wake)(TRXD) wake-up detection time on pin TRXD falling edge on TRXD_0 or TRXD_1 100 - 400 ns td(LWUwake-INHH) delay time from LWU wake-up to INH HIGH falling edge on LWU to INH HIGH AS_Sleep; 5.5 V < VBAT < 27 V RL(INH-GND) = 100 k [4] 2.9 - 100 s falling edge on LWU to INH HIGH AS_Sleep; 27 V < VBAT < 60 V RL(INH-GND) = 100 k [4] - - 175 s [4] - - 55 s - - 10 s - - 55 s td(buswake-INHH) delay time from bus wake-up to INH HIGH AS_Sleep; VBAT > 5.5 V RL(INH-GND) = 100 k td(buswake-INTNL) delay time from bus wake-up to INTN LOW AS_Sleep; AS_Standby VBAT > 5.5 V td(TRXDwake-INHH) delay time from TRXD wake-up to falling edge on TRXDx to INH HIGH INH HIGH AS_Sleep; RL(INH-GND) = 100 k TJA1085 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 [4] © NXP Semiconductors N.V. 2016. All rights reserved. 44 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler Table 15. Dynamic characteristics …continued All parameters are guaranteed for VBAT = 4.45 V to 60 V; VCC = 4.45 V to 5.25 V; VBUF = 4.45 V to 5.25 V; VIO = 2.55 V to 5.25 V; Tvj = 40 C to + 150 C; Rbus = 40 , Cbus = 100 pF; CRXD = 15 pF; CTRXD0 = CTRXD1 = 50 pF and CSDO = 50 pF unless otherwise specified. All voltages are defined with respect to ground; positive currents flow into the IC. Symbol Parameter Conditions Min Typ Max Unit BFT time-out time 80 - 180 ns tdetCL(bus) bus clamp detection time 650 - 2600 s tdetCL(TRXD) TRXD clamp detection time 650 - 2600 s tdetCL(TXEN) TXEN clamp detection time 650 - 2600 s tdet(col)(TRXD) TRXD collision detection time 40 - 120 ns Bus error diagnosis tto(BFT) Clamp detection Transition timing tto_stargotosleep dStarGoToSleep time-out time 640 - 6400 ms tt(bnorm-bdis) branch normal to branch disabled AS_Normal; after a host transition time ‘Branch_Disabled’ command; rising edge on SCSN to transmitter deactivated - - 1 s tt(bdis-bnorm) branch disabled to branch normal AS_Normal; after a host transition time ‘Branch_Normal’ command; rising edge on SCSN to transmitter activated - - 1 s tt(bnorm-btx2) branch normal to branch TxOnly2 AS_Normal; after a host transition time ‘Branch_TxOnly’ command; rising edge on SCSN to deactivating receive function - - 1 s tt(btx2-bnorm) branch TxOnly2 to branch normal AS_Normal; after a host transition time ‘Branch_Normal’ command; rising edge on SCSN to activating receive function - - 1 s tt(moch) mode change transition time - - 25 s after host command AS_Sleep to AS_Standby rising edge on SCSN to rising edge on INH [1] Sum of rise and fall times on TXD (20 % to 80 % on VIO) is 9 ns (max). [2] Guaranteed for Vbus(dif) = 300 mV and Vbus(dif) = 150 mV; Vbus(dif) is the differential bus voltage, VBP - VBM. [3] Vcm is the BP/BM common mode voltage (Vcm = (VBP + VBM)/2). [4] Defined for VINH = 2 V. TJA1085 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 © NXP Semiconductors N.V. 2016. All rights reserved. 45 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler TXD 100 ns to 4400 ns 100 % VIO 50 % VIO 0 % VIO t RXD td(TXD-RXD)(DATA_0) td(TXD-RXD)(DATA_1) 100 % VIO 50 % VIO 0 % VIO t TRXD0 td(TXD-TRXD)(DATA_0) 100 % VBUF 50 % VBUF 0 % VBUF t TRXD1 td(TXD-TRXD)(DATA_1) 100 % VBUF 50 % VBUF 0 % VBUF t Bus branches 1 - 4 td(TXD-bus)(DATA_0) td(TXD-bus)(DATA_1) VOL(dif) +300 mV 0 mV t -300 mV VOL(dif) 015aaa172 Fig 10. Timing diagram when the CC interface is the input channel TJA1085 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 © NXP Semiconductors N.V. 2016. All rights reserved. 46 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler Bus branch n +Vdiff(1) max 22,5 ns max 22,5 ns tf(2) tr(2) +300 mV +150 mV 0V t -150 mV -300 mV -Vdiff(1) Bus branch m 60 ns to 4340 ns td(bus-bus)(DATA_0) td(bus-bus)(DATA_1) +VOH(dif) +300 mV 0V -300 mV -VOL(dif) TRXD0 td(bus-TRXD)(DATA_0) 100 % VBUF 50 % VBUF 0 % VBUF t TRXD1 td(bus-TRXD)(DATA_1) 100 % VBUF 50 % VBUF 0 % VBUF td(BUS-RXD)(DATA_1) RXD t td(BUS-RXD)(DATA_0) 100 % VIO 50 % VIO 0 % VIO t 015aaa173 (1) Vdif = 400 mV to 3000 mV. (2) tr and tf, defined between 300 mV, are both 22.5 ns for bus amplitudes of 800 mV (max), and lower for higher bus amplitudes. Fig 11. Timing diagram when one of the branches is the input channel TJA1085 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 © NXP Semiconductors N.V. 2016. All rights reserved. 47 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler TRXD0 100 % VBUF 50 % VBUF 0 % VBUF t TRXD1 100 % VBUF 50 % VBUF 0 % VBUF t Bus branches 1 - 4 td(TRXD-bus)(DATA_0) td(TRXD-bus)(DATA_1) VOL(dif) +300 mV 0 mV t -300 mV VOL(dif) RXD td(TRXD-RXD)(DATA_0) td(TRXD-RXD)(DATA_1) 100 % VIO 50 % VIO 0 % VIO t 015aaa174 Fig 12. Timing diagram when the internal bus (TRXD0/1) is the input channel TJA1085 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 © NXP Semiconductors N.V. 2016. All rights reserved. 48 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler SCSN tSPILEAD tSPILAG Tcy(clk) tWH(S) SCLK tsu(D) SDI th(D) MSB X LSB X td(SCLK-SDO) floating SDO floating X MSB LSB 015aaa177 Fig 13. SPI timing 11. Application information Further information on the application of the TJA1085 can be found in NXP application hints AH1001_v1.0_TJA1085 FlexRay Active Star Coupler. TJA1085 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 © NXP Semiconductors N.V. 2016. All rights reserved. 49 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler 12. Package outline +94)1SODVWLFWKHUPDOHQKDQFHGYHU\WKLQTXDGIODWSDFNDJHQROHDGV WHUPLQDOVERG\[[PP ' % 627 $ WHUPLQDO LQGH[DUHD $ ( $ F GHWDLO; H H / Y Z E    & & $ % & \ & \  H H (K   WHUPLQDO LQGH[DUHD   ; 'K   VFDOH 'LPHQVLRQV 8QLW PP PP $ $ E F PD[    QRP     PLQ    ' 'K ( (K H H               H  / Y     Z \   \  1RWH 3ODVWLFRUPHWDOSURWUXVLRQVRIPPPD[LPXPSHUVLGHDUHQRWLQFOXGHG 5HIHUHQFHV 2XWOLQH YHUVLRQ ,(& -('(& -(,7$ 627    VRWBSR (XURSHDQ SURMHFWLRQ ,VVXHGDWH   Fig 14. Package outline SOT1113-1 (HVQFN44) TJA1085 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 © NXP Semiconductors N.V. 2016. All rights reserved. 50 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler 13. Soldering of SMD packages This text provides a very brief insight into a complex technology. A more in-depth account of soldering ICs can be found in Application Note AN10365 “Surface mount reflow soldering description”. 13.1 Introduction to soldering Soldering is one of the most common methods through which packages are attached to Printed Circuit Boards (PCBs), to form electrical circuits. The soldered joint provides both the mechanical and the electrical connection. There is no single soldering method that is ideal for all IC packages. Wave soldering is often preferred when through-hole and Surface Mount Devices (SMDs) are mixed on one printed wiring board; however, it is not suitable for fine pitch SMDs. Reflow soldering is ideal for the small pitches and high densities that come with increased miniaturization. 13.2 Wave and reflow soldering Wave soldering is a joining technology in which the joints are made by solder coming from a standing wave of liquid solder. The wave soldering process is suitable for the following: • Through-hole components • Leaded or leadless SMDs, which are glued to the surface of the printed circuit board Not all SMDs can be wave soldered. Packages with solder balls, and some leadless packages which have solder lands underneath the body, cannot be wave soldered. Also, leaded SMDs with leads having a pitch smaller than ~0.6 mm cannot be wave soldered, due to an increased probability of bridging. The reflow soldering process involves applying solder paste to a board, followed by component placement and exposure to a temperature profile. Leaded packages, packages with solder balls, and leadless packages are all reflow solderable. Key characteristics in both wave and reflow soldering are: • • • • • • Board specifications, including the board finish, solder masks and vias Package footprints, including solder thieves and orientation The moisture sensitivity level of the packages Package placement Inspection and repair Lead-free soldering versus SnPb soldering 13.3 Wave soldering Key characteristics in wave soldering are: • Process issues, such as application of adhesive and flux, clinching of leads, board transport, the solder wave parameters, and the time during which components are exposed to the wave • Solder bath specifications, including temperature and impurities TJA1085 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 © NXP Semiconductors N.V. 2016. All rights reserved. 51 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler 13.4 Reflow soldering Key characteristics in reflow soldering are: • Lead-free versus SnPb soldering; note that a lead-free reflow process usually leads to higher minimum peak temperatures (see Figure 15) than a SnPb process, thus reducing the process window • Solder paste printing issues including smearing, release, and adjusting the process window for a mix of large and small components on one board • Reflow temperature profile; this profile includes preheat, reflow (in which the board is heated to the peak temperature) and cooling down. It is imperative that the peak temperature is high enough for the solder to make reliable solder joints (a solder paste characteristic). In addition, the peak temperature must be low enough that the packages and/or boards are not damaged. The peak temperature of the package depends on package thickness and volume and is classified in accordance with Table 16 and 17 Table 16. SnPb eutectic process (from J-STD-020D) Package thickness (mm) Package reflow temperature (C) Volume (mm3) < 350  350 < 2.5 235 220  2.5 220 220 Table 17. Lead-free process (from J-STD-020D) Package thickness (mm) Package reflow temperature (C) Volume (mm3) < 350 350 to 2000 > 2000 < 1.6 260 260 260 1.6 to 2.5 260 250 245 > 2.5 250 245 245 Moisture sensitivity precautions, as indicated on the packing, must be respected at all times. Studies have shown that small packages reach higher temperatures during reflow soldering, see Figure 15. TJA1085 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 © NXP Semiconductors N.V. 2016. All rights reserved. 52 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler temperature maximum peak temperature = MSL limit, damage level minimum peak temperature = minimum soldering temperature peak temperature time 001aac844 MSL: Moisture Sensitivity Level Fig 15. Temperature profiles for large and small components For further information on temperature profiles, refer to Application Note AN10365 “Surface mount reflow soldering description”. TJA1085 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 © NXP Semiconductors N.V. 2016. All rights reserved. 53 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler 14. Appendix: EPL 3.0.1/ISO17458-4 to TJA1085 parameter conversion Table 18. EPL 3.0.1/ISO17458-4 to TJA1085 conversion EPL 3.0.1 TJA1085 Symbol Min Max Unit Symbol Min Max Unit dBusTx01 6 18.75 ns tr(dif)(bus) 6 18.75 ns dBusTx10 6 18.75 ns tf(dif)(bus) 6 18.75 ns uStarTxactive 600 2000 mV VOH(dif), VOL(dif) 900 2000 mV uStarTxidle 0 30 mV Vo(idle)(dif) 0 25 mV dBranchRxActiveMax 650 2600 s tdetCL(bus) 650 2600 s RCM1, RCM2 10 40 k Ri (pins BP and BM) 10 40 k uCM 10 +15 V Vcm[1] 10 +15 V uStarUVVBAT 4 5.5 V Vuvd(VBAT) 4.45 4.715 V uStarUVVCC 4 - V Vuvd(VCC) 4.45 4.715 V dStarUVVCC - 1000 ms tdet(uv)(VCC) 5 100 s iBPLeak - 25 A ILI(BP) - 5 A iBMLeak - 25 A ILI(BM) - 5 A iBMGNDShortMax - 60 mA IO(sc) (pin BM) - 60 mA iBPGNDShortMax - 60 mA IO(sc) (pin BP) - 60 mA iBMBAT48ShortMax - 72 mA IO(sc) (pin BM) - 72 mA iBPBAT48ShortMax - 72 mA IO(sc) (pin BP) - 72 mA iBMBAT27ShortMax - 60 mA IO(sc) (pin BM) - 60 mA iBPBAT27ShortMax - 60 mA IO(sc) (pin BP) - 60 mA functional class: Active Star - bus guardian interface implemented (see Section 2.4) dStarDelay10 - 150 ns td(bus-TRXD) + td(TRXD-bus) - 150 ns dStarDelay01 - 150 ns td(bus-TRXD) + td(TRXD-bus) - 150 ns dStarAsym 0 8 ns td(bus-bus) - 8 ns dStarAsym2 0 10 ns td(bus-TRXD) + td(TRXD-bus) - 10 ns dStarSetUpDelay - 500 ns tdet(act)(TXEN) + td(TXD-TRXD) 20 110 ns tdet(act)(bus) + td(bus-TRXD) 100 285 ns dStarGoToSleep 640 6400 ms tto_stargotosleep 640 6400 ms dStarWakeupReactionTime - 70 s td(bus)(wake-act) - 18 s device qualification according to AEC-Q100 (Rev. F) see Section 2.1 TAMB_Class1 40 +125 C Tamb 40 +125 C iBM-5VshortMax - 60 mA IO(sc) (pin BM) - 60 mA iBP-5VshortMax - 60 mA IO(sc) (pin BP) - 60 mA functional class: Active Star - voltage regulator control implemented (see Section 2.4) iBMBPShortMax - 60 mA IO(sc) (BP to BM) - 60 mA iBPBMShortMax - 60 mA IO(sc) (BM to BP) - 60 mA iBMBAT60ShortMax - 90 mA IO(sc) (pin BP) - 72 mA iBPBAT60ShortMax - 90 mA IO(sc) (pin BM) - 72 mA mV Vo(idle)(BP), Vo(idle)(BM)[2] 1800 3150 mV mV Vo(idle)(BP), Vo(idle)(BM)[3] 100 +100 mV uBias - Non-Low Power 1800 uBias - Low Power 200 TJA1085 Product data sheet 3200 +200 All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 © NXP Semiconductors N.V. 2016. All rights reserved. 54 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler Table 18. EPL 3.0.1/ISO17458-4 to TJA1085 conversion …continued EPL 3.0.1 TJA1085 Symbol Min Max Unit Symbol Min Max Unit dStarUVVBAT - 1000 ms tdet(uv)(VBAT) 5 150 s uStarUVVIO 2 - V Vuvd(VIO) 2.55 2.765 V 1000 dStarUVVIO - ms tdet(uv)(VIO) 5 100 s uINH1Not_Sleep uVBAT 1V V VOH (pin INH) VBAT  0.8 V VBAT V iINH1Leak - 10 A IL (pin INH) 3 +3 A dStarTSSLengthChange 450 0 ns dStarFES1LengthChange 0 450 ns (tdet(act)(bus) + tdet(act)(TRXD)) 410 - ns tdet(act)(bus) - 100 ns tdet(idle)(bus) 100 - ns tdet(idle)(bus) + tdet(idle)(TRXD) - 400 ns dStarUVVSupply - 1 ms tdet(uv)(VBUF) 5 100 s dStarRVSupply - 10 ms trec(uv)(VBUF) 5 100 s uStarUVVSupply 4 - V Vuvd(VBUF) 4.2 4.474 V dStarRVBAT - 10 ms trec(uv)(VBAT) 5 150 s dStarRVCC - 10 ms trec(uv)(VCC) 5 100 s dStarRVIO - 10 ms trec(uv)(VIO) 5 100 s dWUInterrupt 0.13 1 s tsup(int)wake 130 1000 ns dWU0Detect 1 4 s tdet(wake)DATA_0 1 4 s dWUIdleDetect 1 4 s tdet(wake)idle 1 4 s dWUTimeout 48 140 s tdet(wake)tot 50 115 s dStarWakePulseFilter 1 500 s tdet(wake)(LWU) 2.9 175 s iBPLeakGND - 1600 A ILI(BP) - 1600 A iBMLeakGND - 1600 A ILI(BM) - 1600 A dStarWakeupReactionlocal - 100 s td(LWUwake-INHH) 0 100 s dStarSymbolLengthChange 300 +450 ns tdet(act-idle)(bus) + tdet(act-idle)(TRXD) 100 +100 ns functional class: Active Star - logic level adaptation implemented (see Section 2.4) functional class: Active Star - increased voltage amplitude transmitter implemented (see Section 2.4) uESDEXT VESD: HBM on pins BP and BM to GND 8 - kV VESD: HBM on pins LWU and VBAT to GND 6 - kV 6 - kV uESDINT 2 - kV VESD (HBM on any other pin) 4 - kV uESDIEC 6 - kV IEC61000-4-2 on pins BP and BM to GND 6 - kV uVBAT-WAKE - 7 V VBAT 4.75 60 V dBusTxai - 30 ns tr(dif)(bus) (DATA_0 to idle) - 30 ns dBusTxia - 30 ns tf(dif)(bus) (idle to DATA_0) - 30 ns valid operating modes when VStarSupply = nominal; VBAT  7 V; VCC = nominal TJA1085 Product data sheet AS_Sleep, AS_Standby, AS_Normal All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 © NXP Semiconductors N.V. 2016. All rights reserved. 55 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler Table 18. EPL 3.0.1/ISO17458-4 to TJA1085 conversion …continued EPL 3.0.1 Symbol TJA1085 Min Max Unit Symbol Min Max Unit valid operating modes when VStarSupply = nominal; VBAT  5.5 V; AS_Sleep, AS_Standby, AS_Normal VCC = nominal dBusTxDif - RStarTransmitter product-specific 3 ns dStarSymbolEndLengthChange 0 450 ns t(r-f)(dif) - 3 ns Zo(eq)(TX) 10 600  tdet(idle)(bus) 100 - ns tdet(idle)(bus) + tdet(idle)(TRXD) - 400 ns Active star with communication controller interface dStarRxAsym - 10 ns td(bus-TRXD) + td(TRXD-RXD) - 10 ns dStarRx10 - 225 ns td(bus-TRXD) + td(TRXD-RXD) - 135 ns dStarRx01 - 225 ns td(bus-TRXD) + td(TRXD-RXD) - 135 ns dStarRxai 50 550 ns tdet(idle)(bus) + td(bus-RXD) 100 - ns tdet(idle)(bus) + td(bus-TRXD) + tdet(idle)(TRXD) + td(TRXD-RXD) - 535 ns tdet(act)(bus) + td(bus-RXD) 100 - ns tdet(act)(bus) + td(bus-TRXD) + tdet(act)(TRXD) + td(TRXD-RXD) - 545 ns dStarRxia 100 550 ns dStarTxAsym - 10 ns td(TXD-TRXD) + td(TRXD-bus) - 10 ns dStarTx10 - 225 ns td(TXD-TRXD) + td(TRXD-bus) - 135 ns dStarTx01 - 225 ns td(TXD-TRXD) + td(TRXD-bus) - 135 ns dStarTxai - 550 ns tdet(idle)(TXEN) + td(TXD-TRXD) + tdet(idle)(TRXD) + td(TRXD-bus) - 385 ns dStarTxia - 550 ns tdet(act)(TXEN) + td(TXD-TRXD) + tdet(act)(TRXD) + td(TRXD-bus) - 385 ns uVDIG-OUT-HIGH 80 100 % VOH (pin RXD) VIO  0.4 VIO V uVDIG-OUT-LOW - 20 % VOL (pin RXD) - 0.4 V uVDIG-IN-HIGH - 70 % VIH (pins TXEN and BGE) 0.7VIO 5.5 V uVDIG-IN-LOW 30 - % VIL (pins TXEN and BGE) 0.3 0.3VIO V uData0 300 150 mV VIL(dif) (pins BP and BM) 300 150 mV uData1 150 300 mV VIH(dif) (pins BP and BM) 150 300 mV uData1 - |uData0| 30 +30 mV Vi(dif)(H-L) 30 +30 mV uStarLogic_1 - 60 % VIH (pin TXD) 0.6VIO 5.5 V uStarLogic_0 40 - % VIL (pin TXD) 0.3 0.4VIO V dStarRxDR15 + dStarRxDF15 - 13 ns t(r+f) (pin RXD) - 13 ns functional class: Active Star - communication controller interface implemented dStarTxRxai - 325 ns td(TXEN-RXD) - 150 ns C_StarTxD - 10 pF Ci (pin TXD) - 10 pF - 500 mV VIL(dif) (pins BP and BM) 400 125 mV VO (pin RXD)[5] VIO  500 VIO mV - 500 mV uData0_LP 400 100 mV uVDIG-OUT-OFF product specific uVDIG-OUT-UV TJA1085 Product data sheet VO (pin RXD)[4] All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 © NXP Semiconductors N.V. 2016. All rights reserved. 56 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler Table 18. EPL 3.0.1/ISO17458-4 to TJA1085 conversion …continued EPL 3.0.1 TJA1085 Symbol Min Max Unit Symbol Min Max Unit dStarTSSLengthChange_TxD_Bus 450 0 ns (tdet(act)(TXEN) + tdet(act)(TRXD)) 250 - ns tdet(act)(TXEN) - 20 ns tdet(idle)(TXEN) 20 - ns tdet(idle)(TXEN) + tdet(idle)(TRXD) - 250 ns dStarFES1LengthChange_TxD_Bus 0 450 dStarSymbolLengthChange_TxD_Bus 300 dStarTSSLengthChange_Bus_RxD dStarFES1LengthChange_Bus_RxD 450 0 ns +400 ns tdet(act-idle)(TXEN) + tdet(act-idle)(TRXD) 75 +75 ns 0 ns (tdet(act)(bus) + tdet(act)(TRXD)) 410 - ns tdet(act)(bus) - 100 ns tdet(idle)(bus) 100 - ns tdet(idle)(bus) + tdet(idle)(TRXD) - 400 ns 450 ns dStarSymbolLengthChange_Bus_RxD 300 +400 ns tdet(act-idle)(bus) + tdet(act-idle)(TRXD) 100 +100 ns dStarActivityDetection 100 250 ns tdet(act)(bus) 100 210 ns dStarIdleDetection 50 200 ns tdet(idle)(bus) 100 200 ns |dStarRxDR15 - dStarRxDF15 | - 5 ns t(r-f) (pin RXD) - 5 ns dStarTxActiveMax 650 2600 s tdetCL(TXEN) 650 2600 s dStarTxreaction - 75 ns tdet(idle)(TXEN) 20 50 ns Active Star with host interface dStarModeChangeSPI - 100 s tt(moch) - 25 s dStarReactionTimeSPI - 200 s tdet(int) - 100 s uVDIG-OUT-HIGH 80 100 % VOH (pin SDO) VIO  0.4 VIO V uVDIG-OUT-LOW - 20 % VOL (pins SDO, INTN) - 0.4 V uVDIG-IN-HIGH - 70 % VIH (pins SDI, SCSN, SCLK) 0.7VIO 5.5 V uVDIG-IN-LOW 30 - % VIL (pins SDI, SCSN, SCLK) 0.3 0.3VIO V Functional class: Active Star - host interface implemented SPI 0.01 1 Mbit/s tcl(clk) 0.5 100 s uVDIG-OUT-UV - 500 mV VO (pins SDO, INTN)[4] - 500 mV uVDIG-OUT-OFF product specific VO (pins SDO, INTN)[5] - 500 mV behavior when SCK not connected pull-down behavior on SCLK behavior when SDI not connected pull-down behavior on SDI behavior when SCSN not connected pull-up behavior on SCSN [1] [2] Vcm is the BP/BM common mode voltage, (VBP + VBM)/2, and is specified in conditions column for parameters VIH(dif) and VIL(dif) for pins BP and BM; see Table 14. Vcm is tested on a receiving bus driver with a transmitting bus driver that has a ground offset voltage in the range 12.5 V to +12.5 V and transmits a 50/50 pattern. Min: Vo(idle)(BP) = Vo(idle)(BM) = 0.4VBUF = 0.4  4.5 V = 1800 mV; max value: Vo(idle)(BP) = Vo(idle)(BM) = 0.6VBUF = 0.6 5.25 V = 3150 mV; the nominal voltage is 2500 mV. [3] The nominal voltage is 0 mV. [4] When undervoltage on VIO [5] When VCC = VBAT = VBUF = 0 V. TJA1085 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 © NXP Semiconductors N.V. 2016. All rights reserved. 57 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler 15. Abbreviations Table 19. Abbreviations Abbreviation Description AS Active Star CC Communication Controller ECU Engine Control Unit EMC Electro Magnetic Compatibility ESD ElectroStatic Discharge 16. References [1] EPL — FlexRay Communications System Electrical Physical Layer Specification Version 3.0.1, FlexRay Consortium [2] ISO 17458-4:2013 — Road vehicles - FlexRay Communications System part 4: Electrical physical layer specification 17. Revision history Table 20. Revision history Document ID Release date Data sheet status Change notice Supersedes TJA1085 v.2 20160307 Product data sheet - TJA1085 v.1 Modifications: • • • • • • • TJA1085 v.1 TJA1085 Product data sheet Section 1, Section 2.1, Section 14: text amended (specification updated) Table 12: Table note 1 added; measurement conditions and table notes changed for parameter VESD; no time limit removed from measurement conditions throughout; table reformatted Table 14: max. value changed for parameter ICC Section 11 added Table 16, Table 17: JEDEC standard updated in table headers Table 19 updated Ref. 2 added 20121023 Product data sheet - All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 - © NXP Semiconductors N.V. 2016. All rights reserved. 58 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler 18. Legal information 18.1 Data sheet status Document status[1][2] Product status[3] Definition Objective [short] data sheet Development This document contains data from the objective specification for product development. Preliminary [short] data sheet Qualification This document contains data from the preliminary specification. Product [short] data sheet Production This document contains the product specification. [1] Please consult the most recently issued document before initiating or completing a design. [2] The term ‘short data sheet’ is explained in section “Definitions”. [3] The product status of device(s) described in this document may have changed since this document was published and may differ in case of multiple devices. The latest product status information is available on the Internet at URL http://www.nxp.com. 18.2 Definitions Draft — The document is a draft version only. The content is still under internal review and subject to formal approval, which may result in modifications or additions. NXP Semiconductors does not give any representations or warranties as to the accuracy or completeness of information included herein and shall have no liability for the consequences of use of such information. Short data sheet — A short data sheet is an extract from a full data sheet with the same product type number(s) and title. A short data sheet is intended for quick reference only and should not be relied upon to contain detailed and full information. For detailed and full information see the relevant full data sheet, which is available on request via the local NXP Semiconductors sales office. In case of any inconsistency or conflict with the short data sheet, the full data sheet shall prevail. Product specification — The information and data provided in a Product data sheet shall define the specification of the product as agreed between NXP Semiconductors and its customer, unless NXP Semiconductors and customer have explicitly agreed otherwise in writing. In no event however, shall an agreement be valid in which the NXP Semiconductors product is deemed to offer functions and qualities beyond those described in the Product data sheet. 18.3 Disclaimers Limited warranty and liability — Information in this document is believed to be accurate and reliable. However, NXP Semiconductors does not give any representations or warranties, expressed or implied, as to the accuracy or completeness of such information and shall have no liability for the consequences of use of such information. NXP Semiconductors takes no responsibility for the content in this document if provided by an information source outside of NXP Semiconductors. In no event shall NXP Semiconductors be liable for any indirect, incidental, punitive, special or consequential damages (including - without limitation - lost profits, lost savings, business interruption, costs related to the removal or replacement of any products or rework charges) whether or not such damages are based on tort (including negligence), warranty, breach of contract or any other legal theory. Notwithstanding any damages that customer might incur for any reason whatsoever, NXP Semiconductors’ aggregate and cumulative liability towards customer for the products described herein shall be limited in accordance with the Terms and conditions of commercial sale of NXP Semiconductors. Right to make changes — NXP Semiconductors reserves the right to make changes to information published in this document, including without limitation specifications and product descriptions, at any time and without notice. This document supersedes and replaces all information supplied prior to the publication hereof. TJA1085 Product data sheet Suitability for use in automotive applications — This NXP Semiconductors product has been qualified for use in automotive applications. Unless otherwise agreed in writing, the product is not designed, authorized or warranted to be suitable for use in life support, life-critical or safety-critical systems or equipment, nor in applications where failure or malfunction of an NXP Semiconductors product can reasonably be expected to result in personal injury, death or severe property or environmental damage. NXP Semiconductors and its suppliers accept no liability for inclusion and/or use of NXP Semiconductors products in such equipment or applications and therefore such inclusion and/or use is at the customer's own risk. Applications — Applications that are described herein for any of these products are for illustrative purposes only. NXP Semiconductors makes no representation or warranty that such applications will be suitable for the specified use without further testing or modification. Customers are responsible for the design and operation of their applications and products using NXP Semiconductors products, and NXP Semiconductors accepts no liability for any assistance with applications or customer product design. It is customer’s sole responsibility to determine whether the NXP Semiconductors product is suitable and fit for the customer’s applications and products planned, as well as for the planned application and use of customer’s third party customer(s). Customers should provide appropriate design and operating safeguards to minimize the risks associated with their applications and products. NXP Semiconductors does not accept any liability related to any default, damage, costs or problem which is based on any weakness or default in the customer’s applications or products, or the application or use by customer’s third party customer(s). Customer is responsible for doing all necessary testing for the customer’s applications and products using NXP Semiconductors products in order to avoid a default of the applications and the products or of the application or use by customer’s third party customer(s). NXP does not accept any liability in this respect. Limiting values — Stress above one or more limiting values (as defined in the Absolute Maximum Ratings System of IEC 60134) will cause permanent damage to the device. Limiting values are stress ratings only and (proper) operation of the device at these or any other conditions above those given in the Recommended operating conditions section (if present) or the Characteristics sections of this document is not warranted. Constant or repeated exposure to limiting values will permanently and irreversibly affect the quality and reliability of the device. Terms and conditions of commercial sale — NXP Semiconductors products are sold subject to the general terms and conditions of commercial sale, as published at http://www.nxp.com/profile/terms, unless otherwise agreed in a valid written individual agreement. In case an individual agreement is concluded only the terms and conditions of the respective agreement shall apply. NXP Semiconductors hereby expressly objects to applying the customer’s general terms and conditions with regard to the purchase of NXP Semiconductors products by customer. All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 © NXP Semiconductors N.V. 2016. All rights reserved. 59 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler No offer to sell or license — Nothing in this document may be interpreted or construed as an offer to sell products that is open for acceptance or the grant, conveyance or implication of any license under any copyrights, patents or other industrial or intellectual property rights. 18.4 Licenses Export control — This document as well as the item(s) described herein may be subject to export control regulations. Export might require a prior authorization from competent authorities. This NXP product contains functionality that is compliant with the FlexRay specifications. Translations — A non-English (translated) version of a document is for reference only. The English version shall prevail in case of any discrepancy between the translated and English versions. NXP ICs with FlexRay functionality These specifications and the material contained in them, as released by the FlexRay Consortium, are for the purpose of information only. The FlexRay Consortium and the companies that have contributed to the specifications shall not be liable for any use of the specifications. The material contained in these specifications is protected by copyright and other types of Intellectual Property Rights. The commercial exploitation of the material contained in the specifications requires a license to such Intellectual Property Rights. These specifications may be utilized or reproduced without any modification, in any form or by any means, for informational purposes only. For any other purpose, no part of the specifications may be utilized or reproduced, in any form or by any means, without permission in writing from the publisher. The FlexRay specifications have been developed for automotive applications only. They have neither been developed nor tested for non-automotive applications. The word FlexRay and the FlexRay logo are registered trademarks. 18.5 Trademarks Notice: All referenced brands, product names, service names and trademarks are the property of their respective owners. 19. Contact information For more information, please visit: http://www.nxp.com For sales office addresses, please send an email to: salesaddresses@nxp.com TJA1085 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 2 — 7 March 2016 © NXP Semiconductors N.V. 2016. All rights reserved. 60 of 61 TJA1085 NXP Semiconductors FlexRay active star coupler 20. Contents 1 2 2.1 2.2 2.3 2.4 3 4 5 5.1 5.2 6 6.1 6.2 6.3 6.3.1 6.4 6.4.1 6.4.1.1 6.4.1.2 6.4.2 6.4.3 6.5 6.5.1 6.6 6.7 6.8 6.8.1 6.8.1.1 6.8.1.2 6.8.1.3 6.8.1.4 6.8.1.5 6.8.1.6 6.9 6.9.1 6.9.1.1 6.9.1.2 6.9.1.3 6.9.1.4 6.9.1.5 6.9.1.6 6.9.1.7 6.9.1.8 6.10 General description . . . . . . . . . . . . . . . . . . . . . . 1 Features and benefits . . . . . . . . . . . . . . . . . . . . 1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Functional . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Robustness. . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Active star functional classes . . . . . . . . . . . . . . 2 Ordering information . . . . . . . . . . . . . . . . . . . . . 2 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Pinning information . . . . . . . . . . . . . . . . . . . . . . 4 Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 4 Functional description . . . . . . . . . . . . . . . . . . . 6 Supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . 6 Host Control (HC) and Autonomous Power (AP) modes - APM flag . . . . . . . . . . . . . 6 Signal router . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 TRXD collision . . . . . . . . . . . . . . . . . . . . . . . . . 6 Wake-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Remote wake-up . . . . . . . . . . . . . . . . . . . . . . . 7 Bus wake-up via wake-up pattern. . . . . . . . . . . 7 Bus wake-up via dedicated FlexRay data frame. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Local wake-up via pin LWU . . . . . . . . . . . . . . . 9 Wake-up via the TRXD0/1 interface . . . . . . . . . 9 Communication controller interface . . . . . . . . 10 Bus activity and idle detection . . . . . . . . . . . . 10 Bus error detection . . . . . . . . . . . . . . . . . . . . . 11 Interrupt generation . . . . . . . . . . . . . . . . . . . . 11 Operating modes . . . . . . . . . . . . . . . . . . . . . . 12 Operating mode transitions . . . . . . . . . . . . . . 12 AS_PowerOff . . . . . . . . . . . . . . . . . . . . . . . . . 12 AS_Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 AS_Standby . . . . . . . . . . . . . . . . . . . . . . . . . . 12 AS_Sleep . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 AS_Normal . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Operating mode transition diagram . . . . . . . . 15 Branch operating modes . . . . . . . . . . . . . . . . 16 Branch operating mode transitions . . . . . . . . . 16 Branch_Off . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Branch_LowPower . . . . . . . . . . . . . . . . . . . . . 16 Branch_Disabled . . . . . . . . . . . . . . . . . . . . . . 17 Branch_FailSilent . . . . . . . . . . . . . . . . . . . . . . 17 Branch_TxOnly1 . . . . . . . . . . . . . . . . . . . . . . . 17 Branch_TxOnly2 . . . . . . . . . . . . . . . . . . . . . . . 17 Branch_Normal. . . . . . . . . . . . . . . . . . . . . . . . 17 Branch operating mode transition diagram. . . 19 SPI interface . . . . . . . . . . . . . . . . . . . . . . . . . . 20 6.10.1 Register access . . . . . . . . . . . . . . . . . . . . . . . 6.10.2 SPI registers . . . . . . . . . . . . . . . . . . . . . . . . . 6.10.2.1 Control register . . . . . . . . . . . . . . . . . . . . . . . 6.10.2.2 Configuration register. . . . . . . . . . . . . . . . . . . 6.10.2.3 Interrupt Status register . . . . . . . . . . . . . . . . . 6.10.2.4 General Status register . . . . . . . . . . . . . . . . . 6.10.2.5 Branch X status registers . . . . . . . . . . . . . . . . 7 Limiting values . . . . . . . . . . . . . . . . . . . . . . . . 8 Thermal characteristics . . . . . . . . . . . . . . . . . 9 Static characteristics . . . . . . . . . . . . . . . . . . . 10 Dynamic characteristics. . . . . . . . . . . . . . . . . 11 Application information . . . . . . . . . . . . . . . . . 12 Package outline. . . . . . . . . . . . . . . . . . . . . . . . 13 Soldering of SMD packages . . . . . . . . . . . . . . 13.1 Introduction to soldering. . . . . . . . . . . . . . . . . 13.2 Wave and reflow soldering. . . . . . . . . . . . . . . 13.3 Wave soldering . . . . . . . . . . . . . . . . . . . . . . . 13.4 Reflow soldering . . . . . . . . . . . . . . . . . . . . . . 14 Appendix: EPL 3.0.1/ISO17458-4 to TJA1085 parameter conversion. . . . . . . . . . . . . . . . . . . 15 Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . 16 References. . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Revision history . . . . . . . . . . . . . . . . . . . . . . . 18 Legal information . . . . . . . . . . . . . . . . . . . . . . 18.1 Data sheet status . . . . . . . . . . . . . . . . . . . . . . 18.2 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . 18.3 Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . 18.4 Licenses. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18.5 Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Contact information . . . . . . . . . . . . . . . . . . . . 20 Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 20 22 23 25 28 31 33 34 35 41 49 50 51 51 51 51 52 54 58 58 58 59 59 59 59 60 60 60 61 Please be aware that important notices concerning this document and the product(s) described herein, have been included in section ‘Legal information’. © NXP Semiconductors N.V. 2016. All rights reserved. For more information, please visit: http://www.nxp.com For sales office addresses, please send an email to: salesaddresses@nxp.com Date of release: 7 March 2016 Document identifier: TJA1085