MAX12005

19-5554; Rev 1; 10/11 TION KIT EVALUA BLE AVAILA Satellite IF Switch Features S 8-Input-to-4-Output Matrix Switch S Expandable to 16 Inputs with Cascade Master/ General Description The MAX12005 satellite IF switch IC is designed for multi-user applications supporting two quad universal low-noise blocks (LNBs) to be matrix switched to four satellite receivers. The system can be easily expanded to accept 16 satellite IF inputs using the cascade option and one additional satellite IF switch IC. A configuration of eight satellite IF inputs to eight satellite receivers is also possible by using two ICs and adding eight input splitters. The insertion loss of these splitters can be compensated by a +6dB or +12dB input gain select. There are two ways to control the switch function. Each IC contains four DiSEqCK 2.0 decoders and four alternate tone/voltage decoders. The decoders use an integrated trimmed oscillator, simplifying the MAX12005 implementation into any system. There are four operational modes, which include LNB mode (for use within the LNB), cascade master mode, cascade slave mode, and single mode. The satellite IF switch is designed on an advanced SiGe process and is available in a lead-free 48-pin TQFN surface-mount package (7mm x 7mm). Slave Option S 950MHz to 2150MHz Operation S Greater than 30dB Switch Isolation MAX12005 S 0/+6/+12dB Input Stage Gain Selection to Compensate for Splitter Insertion Loss Gain Step for All Input Stages Is Commonly Controlled Through an Analog Select Pin S Four Integrated DiSEqC 2.0 Decoders with Integrated Oscillator S Alternate Tone/Voltage Detection S ESD Protected to 2kV HBM Applications Direct Broadcast Satellite Receivers Satellite IF Distribution L-Band Distribution PART Ordering Information TEMP RANGE PIN-PACKAGE MAX12005ETM+ -40NC to +85NC 48 TQFN-EP* +Denotes a lead(Pb)-free/RoHS-compliant package. *EP = Exposed paddle. DiSEqC is a trademark of EUTELSAT. _______________________________________________________________ Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. Satellite IF Switch MAX12005 ABSOLUTE MAXIMUM RATINGS VCC to GND.......................................................... -0.3V to +3.6V RFIN1–RFIN8 to GND........................................... -0.3V to +1.5V CASCADE_IN1–CASCADE_IN4 to GND .............. -0.3V to +1.5V RFOUT1–RFOUT4 to GND ....................... -0.3V to (VCC + 0.3V) DISEQC_TX1–DISEQC_TX4 to GND ......... -0.3V to (VCC + 0.3V) DISEQC_RX1–DISEQC_RX4 to GND ........-0.3V to (VCC + 0.3V) GAIN_SELECT, MODE_SELECT to GND...................................................-0.3V to (VCC + 0.3V) Continuous Power Dissipation (TA = +70NC) TQFN (derate 27.8 mW/NC above +70NC) .................. 2.2W Operating Ambient Temperature Range ........... -40NC to +85NC Maximum Junction Temperature.....................................+150NC Storage Temperature Range............................ -65NC to +150NC Lead Temperature (soldering, 10s) ................................+300NC Soldering Temperature (reflow) ......................................+260NC Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. CAUTION! ESD SENSITIVE DEVICE DC ELECTRICAL CHARACTERISTICS (VCC = +3.0V to +3.5V, TA = -40NC to +85NC, mode set to master, input gain stages set to highest gain, inputs matched to 75I, output loads = 75I. Typical values are at +3.3V and at TA = +25NC, unless otherwise noted.) (Note 1) PARAMETER Supply Voltage Supply Current +12dB GAIN_SELECT Input HighLevel Voltage +6dB GAIN_SELECT Input Voltage Level and Range 0dB GAIN_SELECT Input Low-Level Voltage Single MODE_SELECT Input HighLevel Voltage Master MODE_SELECT Input Voltage Level and Range Slave MODE_SELECT Input Voltage Level and Range LNB MODE_SELECT Input Low-Level Voltage GAIN_SELECT and MODE_SELECT Input Current DC Voltage Detect Input High Level DC Voltage Detect Input Low Level DISEQC_RX_ Input Current DISEQC_TX_ Output High-Level Voltage DISEQC_TX_ Output Low-Level Voltage SYMBOL VCC ICC VIH VIN VIL VIH VIN VIN VIL IIN VIH VIL IIN VOH VOL VIN = VCC (Note 2) (Note 2) VIN = high or low ILOAD = -1mA ILOAD = +1mA VCC 0.4V 0.4 1.23 1.11 1 VCC 0.4V 2/3 VCC Q200mV 1/3 VCC Q200mV 0.4 10 VCC = 3.3V, 0dB, one input selected, four outputs selected VCC 0.4V 1/2 VCC Q200mV 0.4 CONDITIONS MIN 3.0 150 TYP MAX 3.5 250 UNITS V mA V mV V V mV mV V FA V V FA V V 2 Satellite IF Switch AC ELECTRICAL CHARACTERISTICS (MAX12005 EV Kit, VCC = +3.0V to +3.5V, fIN = 950MHz, VIN = 70dBFV, TA = -40NC to +85NC, mode set to master, input gain stages set to 0dB, RF inputs matched to 75I, RF output loads = 75I. Typical values are at +3.3V and at TA = +25NC, unless otherwise noted.) (Note 1) PARAMETER Operation Frequency DISEQC_RX_ Tone Input Level Switch Gain at 950MHz (Note 3) Cascade Input Switch Gain at 950MHz Switch-to-Switch Gain Match Gain Slope with Frequency Single-Input Source Gain Change SYMBOL fRF VIN fIN = 22kHz (Note 5) 0dB gain +6dB gain +12dB gain |S21| D|S21| At 950MHz (Note 4) Between 950MHz and 2150MHz Gain change from single output connected to a single input to four outputs connected to a single input Output level set to +89dBFV by varying three equal amplitude tones at 955MHz, 962MHz, and 965MHz; measure products at 952MHz and 958MHz Output level set to +89dBFV by varying three equal amplitude tones at 2135MHz, 2142MHz, and 2145MHz; measure products at 2132MHz and 2138MHz -12 -12 -12 55 33 fOSC 8 -1.5 +3 -0.4 CONDITIONS MIN 950 60 0 +6 +12 0 +3.5 dB dB dB dB dB TYP MAX 2150 UNITS MHz mVP-P MAX12005 3rd-Order Intermodulation Product (Case 1) IM3 -35 dBc 3rd-Order Intermodulation Product (Case 2) IM3 -34 dBc RFIN1–RFIN8 Input Return Loss CASCADE_IN1–CASCADE_IN4 Input Return Loss RFOUT1–RFOUT4 Output Return Loss Switch Isolation Port-to-Port Isolation DiSEqC Clock |S11| |S11| |S22| dB dB dB dB dB MHz Note 1: Production tested at +25NC; guaranteed by design and characterization at -40NC and +85NC. Note 2: To supply the specified input-voltage-detect levels requires the use of a voltage-divider comprised of 12.7kI and 1.02kI Q0.5% tolerance resistors. The voltage being divided is expected to be VOL = 14.75V maximum and VOH = 16.75V minumum. Note 3: The common input gain step is set by analog control. All gain measurements have only one output connect to each input. Switch gain measurements do not include cascade inputs as part of the switch signal path. Note 4: Switch-to-switch gain match is defined as each switch to every other switch gain match. Each switch must be set up with the same input gain step. Note 5: 60mVP-P square wave for fIN = 22kHz. For sine wave, the typical minimum is 100mVP-P. 3 Satellite IF Switch MAX12005 Typical Operating Characteristics (MAX12005 EV Kit, VCC = +3.0V to +3.5V, fIN = 950MHz, VIN = 70dBFV, TA = -40NC to +85NC, mode set to master, input gain stages set to 0dB, RF inputs matched to 75I, RF output loads = 75I. Typical values are at +3.3V and at TA = +25NC, unless otherwise noted. Production tested at +25NC; guaranteed by design and characterization at -40NC and +85NC.) 2 1 0 GAIN (dB) -1 -2 950MHz TA = -40°C 120 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6 VOLTAGE (V) -3 -4 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6 VOLTAGE (V) MAX12005 toc03 VOLTAGE vs. CURRENT (0dB GAIN) MAX12005 toc01 VOLTAGE vs. GAIN (+25°C) MAX12005 toc02 S21 +25°C (0dB GAIN, VAR. IN/OUT) 4 3 2 MAGNITUDE (dB) 1 0 -1 -2 -3 1.95E+09 1.15E+09 1.35E+09 1.55E+09 1.75E+09 2.15E+09 2.15E+09 MAX12005 toc09 200 TA = +85°C 180 CURRENT (mA) 2150MHz 1550MHz 160 TA = +25°C 140 -4 9.5E+08 FREQUENCY (Hz) S21 +85°C (0dB GAIN, VAR. IN/OUT) MAX12005 toc04 S21 -40°C (0dB GAIN, VAR. IN/OUT) MAX12005 toc05 RF S11 (VAR. INPUT) -10 -15 MAGNITUDE (dB) -20 -25 -30 -35 -40 -45 MAX12005 toc06 4 3 2 MAGNITUDE (dB) 1 0 -1 -2 -3 1.95E+09 4 3 2 MAGNITUDE (dB) 1 0 -1 -2 -3 1.95E+09 -5 2.15E+09 2.15E+09 1.95E+09 1.95E+09 1.35E+09 1.35E+09 1.15E+09 1.55E+09 1.75E+09 1.15E+09 1.55E+09 1.75E+09 1.15E+09 1.35E+09 1.55E+09 FREQUENCY (Hz) FREQUENCY (Hz) FREQUENCY (Hz) RF S22 (VAR. OUTPUT) MAX12005 toc07 PORT-TO-PORT ISOLATION (VAR. PORTS) MAX12005 toc08 SWITCH ISOLATION (VAR. CH) -30 -35 -40 -45 ISOLATION -50 -55 -60 -65 -70 -75 -80 9.5E+08 -5 -10 -15 MAGNITUDE (dB) -20 -25 -30 -35 -40 -45 1.95E+09 -10 -20 -30 ISOLATION (dB) -40 -50 -60 -70 -80 2.15E+09 1.95E+09 1.35E+09 1.35E+09 2.15E+09 1.15E+09 1.35E+09 1.55E+09 1.15E+09 1.55E+09 1.75E+09 1.15E+09 1.55E+09 FREQUENCY (Hz) FREQUENCY (Hz) 1.75E+09 FREQUENCY (Hz) 4 1.75E+09 -50 9.5E+08 -90 9.5E+08 1.75E+09 2.15E+09 -4 9.5E+08 -4 9.5E+08 -50 9.5E+08 Satellite IF Switch Pin Configuration DISEQC_RX1 DISEQC_RX2 DISEQC_RX3 DISEQC_RX4 DISEQC_TX1 DISEQC_TX2 DISEQC_TX3 DISEQC_TX4 MAX12005 VCC GND 36 35 34 33 32 31 30 29 28 27 26 25 RFOUT3 GND VCC RFOUT2 GND VCC RFOUT1 GND VCC VCC MODE_SELECT GAIN_SELECT 37 38 39 40 41 42 43 44 45 46 47 48 1 RFIN1 2 GND 3 RFIN2 4 GND 5 RFIN3 6 GND 7 RFIN4 8 GND 9 RFIN5 10 11 12 RFIN6 GND GND + 24 23 22 21 20 19 GND CASCADE_IN4 GND CASCADE_IN3 GND CASCADE_IN2 GND CASCADE_IN1 GND RFIN8 GND RFIN7 VCC TOP VIEW RFOUT4 MAX12005 18 17 16 15 14 13 TQFN Pin Description PIN 1 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 35, 38, 41, 44 3 5 7 9 11 13 15 17 19 21 23 NAME RFIN1 RF Input from LNB FUNCTION GND Electrical Ground RFIN2 RFIN3 RFIN4 RFIN5 RFIN6 RFIN7 RFIN8 CASCADE_IN1 CASCADE_IN2 CASCADE_IN3 CASCADE_IN4 RF Input from LNB RF Input from LNB RF Input from LNB RF Input from LNB RF Input from LNB RF Input from LNB RF Input from LNB Cascade Input from RF Output of Second MAX12005 in Slave Mode Cascade Input from RF Output of Second MAX12005 in Slave Mode Cascade Input from RF Output of Second MAX12005 in Slave Mode Cascade Input from RF Output of Second MAX12005 in Slave Mode 5 Satellite IF Switch MAX12005 Pin Description (continued) PIN 25 26 27 28 29 30 31 32 33, 36, 39, 42, 45, 46 34 37 40 43 47 48 — NAME DISEQC_TX4 DISEQC_RX4 DISEQC _TX3 DISEQC _RX3 DISEQC _TX2 DISEQC _RX2 DISEQC _TX1 DISEQC _RX1 VCC RFOUT4 RFOUT3 RFOUT2 RFOUT1 MODE_SELECT GAIN_SELECT EP FUNCTION Return DiSEqC Signal Output to Satellite Receiver (Master) or Outputs Envelope of Received DiSEqC Signal for Use by External Controller Input for DiSEqC Slave Signal from Satellite Receiver or Master Return DiSEqC Signal Output to Satellite Receiver (Master) or Outputs Envelope of Received DiSEqC Signal for Use by External Controller Input for DiSEqC Slave Signal from Satellite Receiver or Master Return DiSEqC Signal Output to Satellite Receiver (Master) or Outputs Envelope of Received DiSEqC Signal for Use by External Controller Input for DiSEqC Slave Signal from Satellite Receiver or Master Return DiSEqC Signal Output to Satellite Receiver (Master) or Outputs Envelope of Received DiSEqC Signal for Use by External Controller Input for DiSEqC Slave Signal from Satellite Receiver or Master 3.0V to 3.5V Supply. Analog supply pins 33, 36, 39, and 42. Digital supply pins 45 and 46. RF Output to Satellite Receiver RF Output to Satellite Receiver RF Output to Satellite Receiver RF Output to Satellite Receiver Satellite Switch Mode Select Gain Select for All Input Stages Exposed Pad Ground. The exposed pad must be soldered to the circuit board for proper thermal and electrical performance. 6 Satellite IF Switch Functional Diagram 33, 36, 39, 42, 45 0/+6/+12dB 1 RFIN1 9:1 MUX SATELLITE IF SWITCH 3 RFIN2 9:1 MUX RFOUT2 40 RFOUT1 43 VCC MAX12005 5 RFIN3 7 RFIN4 9:1 MUX RFOUT3 37 9 RFIN5 MAX12005 RFOUT4 VCC 34 46 47 48 11 RFIN6 9:1 MUX CONTROL LOGIC MODE_SELECT GAIN_SELECT 13 RFIN7 15 RFIN8 PORT SWITCH CONTROL VOLTAGE/ TONE DETECTOR VOLTAGE/ TONE DETECTOR VOLTAGE/ TONE DETECTOR VOLTAGE/ TONE DETECTOR DiSEqC 2.0 DiSEqC 2.0 DiSEqC 2.0 DiSEqC 2.0 8MHz OSCILLATOR 16 GND FREQUENCY OUT CASCADE_IN3 CASCADE_IN1 CASCADE_IN2 CASCADE_IN4 DISEQC_RX1 DISEQC_RX2 DISEQC_RX3 DISEQC_RX4 DISEQC_TX1 DISEQC_TX2 DISEQC_TX3 DISEQC_TX4 GND 2, 4, 6, 8, 10, 12, 14, 18, 20, 22, 24, 35, 38, 41, 44 17 19 21 23 31 32 29 30 27 28 25 26 7 Satellite IF Switch MAX12005 Detailed Description The MAX12005 satellite IF switch features eight 75I inputs with three selectable gain steps of 0, +6dB, and +12dB. Each of the eight input amplifiers feeds into four nine-to-one multiplexers with the switching controlled by voltage/tone or DiSEqC signaling from up to four receivers. The output of each multiplexer is then sent to a satellite receiver through a 75I buffered output stage. The satellite IF switch has four modes of operation. Two modes are used to increase the number of IF inputs by cascading two MAX12005 ICs together. The first IC is set to master mode to enable the four cascade inputs. The second IC is set to slave mode with its outputs connected to the cascade inputs of the master IC. The LNB mode sets up the IC to recognize LNB DiSEqC signaling to control switching and ignore DiSEqC signaling for multiswitch applications. The single mode sets up the IC to recognize multiswitch DiSEqC signaling to control switching and ignore LNB DiSEqC signaling. For the LNB, single, and slave modes, the four cascade inputs are disabled. The voltage supplied to the GAIN_SELECT pin provides the selection for one of three gain settings available at all eight input stages, as follows: GND = 0dB 1/2 VCC = +6dB VCC = +12dB The +6dB gain step voltage can be set through the use of a simple supply voltage-divider. This gain select feature is intended to compensate for input signal losses due to the use of input RF signal splitters. The voltage supplied to the MODE_SELECT pin provides the selection for one of four IC operational modes, as follows: GND = LNB Mode 1/3 VCC = Slave Mode (Cascade Operation) 2/3 VCC = Master Mode (Cascade Operation) VCC = Single Mode The slave mode and master mode voltages can be set through the use of simple supply voltage-dividers. Voltage/tone signaling is the default switch control after power-up or when a receiver is connected or reconnected with the die power on. After an individual decoder receives a DiSEqC signal, that decoder switches from voltage/one control to DiSEqC control until a new receiver connection is made or when the IC has a power-on reset. To minimize coupling between different sections of the IC, a star power-supply routing configuration with a large decoupling capacitor at a central VCC node is recommended. The VCC traces branch out from this node, each going to a separate VCC node in the circuit. Place a bypass capacitor as close as possible to each supply pin. This arrangement provides local decoupling at each VCC pin. Use at least one via per bypass capacitor for a low-inductance ground connection. Do not share the capacitor ground vias with any other branch. The MAX12005 EV kit can be used as a starting point for layout. For best performance, take into consideration grounding and routing of RF, baseband, and powersupply PCB proper line. Make connections from vias to the ground plane as short as possible. On the highimpedance ports, keep traces short to minimize shunt capacitance. EV kit schematic and Gerber files can be found at www.maxim-ic.com. Chip Mode Select Switch Control Layout Considerations Input Gain Select SPI is a trademark of Motorola, Inc. 8 Satellite IF Switch The DiSEqC interface is designed according to the DiSEqC Bus Functional Specification version 4.2. All framing bytes 0xE0 through 0xE7 are supported. The following address bytes are supported: DiSEqC Slave Control Interface 0x00 0x10 0x11 0x14 Any device Any LNB, switcher, or SMATV LNB Switcher, DC-blocking MAX12005 PRIMARY DEVICE RFIN1 RFOUT1 RFOUT2 RFOUT3 RFOUT4 RFIN2 RFIN3 RFIN4 RFIN5 RFIN6 RFIN7 RFIN8 CASCADE4 CASCADE3 CASCADE2 CASCADE1 SAT A, LOW, VERTICAL SAT A, LOW, HORIZONTAL SAT A, HIGH, VERTICAL SAT A, HIGH, HORIZONTAL SAT B, LOW, VERTICAL SAT B, LOW, HORIZONTAL SAT B, HIGH, VERTICAL SAT B, HIGH, HORIZONTAL TO SAT RECEIVER 1 TO SAT RECEIVER 2 TO SAT RECEIVER 3 TO SAT RECEIVER 4 SECONDARY DEVICE RFIN1 RFOUT1 RFOUT2 RFOUT3 RFOUT4 RFIN2 RFIN3 RFIN4 RFIN5 RFIN6 RFIN7 RFIN8 CASCADE4 CASCADE3 CASCADE2 CASCADE1 SAT C, LOW, VERTICAL SAT C, LOW, HORIZONTAL SAT C, HIGH, VERTICAL SAT C, HIGH, HORIZONTAL SAT D, LOW, VERTICAL SAT D, LOW, HORIZONTAL SAT D, HIGH, VERTICAL SAT D, HIGH, HORIZONTAL Figure 1. Typical Cascade Connection Between Two Satellite Switch ICs 9 Satellite IF Switch MAX12005 Table 1 shows the coherence between the terms used by the DiSEqC standard and the pin names used by the MAX12005 along with the command sequences used to control switching. Table 2 lists the supported command bytes. The command byte is the 3.byte in the DiSEqC master frame (refer to the DiSEqC Bus Functional Specification version 4.2, top of page 13). The DiSEqC slave only sends a reply if requested by a framing byte 0xE2 or 0xE3 in the master frame (refer to DiSEqC Bus Functional Specification version 4.2, bottom of page 13). All DiSEqC commands control the contents of the DiSEqC registers described in chapter 7.1. Table 3 lists the supported command bytes. The DiSEqC commands are internally mapped to individually named registers. The registers do not have an address. Table 1. DiSEqC Slave Control Interface DEVICE (Note 1) Primary INPUT RFIN1 RFIN2 RFIN3 RFIN4 RFIN5 RFIN6 RFIN7 RFIN8 Secondary RFIN1 RFIN2 RFIN3 RFIN4 RFIN5 RFIN6 RFIN7 RFIN8 SIGNAL FROM Satellite A, low band, vertical polarization Satellite A, low band, horizontal polarization Satellite A, high band, vertical polarization Satellite A, high band, horizontal polarization Satellite B, low band, vertical polarization Satellite B, low band, horizontal polarization Satellite B, high band, vertical polarization Satellite B, high band, horizontal polarization Satellite C, low band, vertical polarization Satellite C, low band, horizontal polarization Satellite C, high band, vertical polarization Satellite C, high band, horizontal polarization Satellite D, low band, vertical polarization Satellite D, low band, horizontal polarization Satellite D, high band, vertical polarization Satellite D, high band, horizontal polarization DiSEqC COMMAND SEQUENCE (Note 2) 0x23, 0x22, 0x20, 0x21 0x23, 0x22, 0x20, 0x25 0x23, 0x22, 0x24, 0x21 0x23, 0x22, 0x24, 0x25 0x23, 0x26, 0x20, 0x21 0x23, 0x26, 0x20, 0x25 0x23, 0x26, 0x24, 0x21 0x23, 0x26, 0x24, 0x25 0x27, 0x22, 0x20, 0x21 0x27, 0x22, 0x20, 0x25 0x27, 0x22, 0x24, 0x21 0x27, 0x22, 0x24, 0x25 0x27, 0x26, 0x20, 0x21 0x27, 0x26, 0x20, 0x25 0x27, 0x26, 0x24, 0x21 0x27, 0x26, 0x24, 0x25 Note 1: The primary device outputs connect directly to the satellite receivers. The secondary device outputs connect to the primary device through the cascade inputs. Also see Figure 1. Note 2: Only those DiSEqC commands that differ between sequences have to be sent to change the input, not all four commands. By default RFIN1 from the primary device is selected. The DiSEqC interface is designed according to the DiSEqC Bus Functional Specification version 4.2. 10 Satellite IF Switch Table 2. DiSEqC Slave Control Interface Command Bytes HEX VALUE 0x00 0x01 0x04 0x05 0x06 0x07 0x08 0x09 0x10 0x11 0x14 0x20 0x21 0x22 0x23 0x24 0x25 0x26 0x27 0x30 0x31 COMMAND Reset Clr Reset Set Contend Contend Clr Contend Address Move C Move Status Config Switch 0 Set Lo Set VR Set Pos A Set S0A Set Hi Set HL Set Pos B Set S0B Sleep Awake FUNCTION Reset DiSEqC decoder Clear reset flag Clears Status_reg, bit 0 Set contention flag Sets Status_reg, bit 7 Return address only if contention flag is set Reads Address_reg Clear contention flag Clears Status_reg, bit 7 Return address unless contention flag is set Reads Address_reg Change address only if contention flag is set Writes to Address_reg Change address unless contention flag is set Writes to Address_reg Read status register flags Reads Status_reg Read configuration flags Reads Configuration_reg Read switching state flags Reads Switch_reg Select the low local oscillator frequency Clears Switch_reg, bit 4 Select vertical polarization (or right circular) Clears Switch_reg, bit 5 Select satellite position A (or position C) Clears Switch_reg, bit 6 Select switch option A (i.e. positions A/B) Clears Switch_reg, bit 7 Select the high local oscillator frequency Sets Switch_reg, bit 4 Select horizontal polarization (or left circular) Sets Switch_reg, bit 5 Select satellite position B (or position D) Sets Switch_reg, bit 6 Select switch option B (i.e. positions C/D) Sets Switch_reg, bit 7 Ignore all bus commands except Awake Sets Status_reg, bit 1 Respond to future bus commands normally Clears Status_reg, bit 1 DATA BYTES — — — — — — 1 byte 1 byte — — — — — — — — — — — — — SLAVE REPLY Framing byte Framing byte Framing byte Framing + data byte Framing byte Framing + data byte Framing byte Framing byte Framing + data byte Framing + data byte Framing + data byte Framing byte Framing byte Framing byte Framing byte Framing byte Framing byte Framing byte Framing byte Framing byte Framing byte MAX12005 11 Satellite IF Switch MAX12005 Table 2. DiSEqC Slave Control Interface Command Bytes (continued) HEX VALUE 0x38 COMMAND Write N0 FUNCTION Write to port group 0 Controls Switch_reg, bits 7 downto 4 (Note 1) Read current frequency Reads Low_LOF_reg2/1 or High_LOF_reg2/1 depending on Switch_reg, bit 4 (Note 2) Read current frequency table entry number Reads Low_LOF_reg0, bit 3 downto 0 or High_LOF_reg0, bit 3 downto 0 depending on Switch_reg, bit 4 Read low-frequency table entry number Reads Low_LOF_reg0, bit 3 downto 0 Read high-frequency table entry number Reads High_LOF_reg0, bit 3 downto 0 DATA BYTES 1 byte SLAVE REPLY Framing byte Framing + 2 data bytes 0x50 LO string — 0x51 LO now — Framing + data byte Framing + data byte Framing + data byte 0x52 0x53 LO Lo LO Hi — — Note 1: Refer to DiSEqC Bus Functional Specification version 4.2, page 18. Note 2: Refer to DiSEqC Bus Functional Specification version 4.2, page 22. Table 3. DiSEqC Slave Control Interface Registers ADDRESS Address_reg BIT 7:0 7 6 5 4 Status_reg 3 2 1 0 7 6 5 Configuration_reg 4 3 2 1 0 ACC RW RW R — R — RW RW RW R R R R R R R R address contention standby Unused aux_power Unused voltage sleep reset analog standby positioner power_detection loop_through polarizer switch lof_values NAME DiSEqC address Bus contention flag Standby mode — Auxiliary power available — 0 = Low DC, 1 = High DC 0 = Awake, 1 = Sleep Reset flag Analog output facility Standby facility Positioner capability External power-detection capability Loopthrough facility Polarizer capability Switcher capability LOF value output capability FUNCTION DEFAULT LNB: 0x11 Switch: 0x14 0 0 — 0 — Depends on voltage input 0 1 0 0 0 0 0 0 1 1 12 Satellite IF Switch Table 3. DiSEqC Slave Control Interface Registers (continued) ADDRESS BIT 7 6 5 4 Switch_reg 3 2 1 0 Low_LOF_reg_2 Low_LOF_reg_1 Low_LOF_reg_0 High_LOF_reg_2 High_LOF_reg_1 High_LOF_reg_0 7:4 3:0 7:4 3:0 7:4 3:0 7:4 3:0 7:4 3:0 7:4 3:0 ACC RW RW RW RW RW R R R R R R R R R R R R R R R option satellite polarization band option_switchable satellite_switchable polarization_switchable band_switchable low_10GHz low_1GHz low_100MHz low_10MHz low_1MHz low_table_entry high_10GHz high_1GHz high_100MHz high_10MHz high_1MHz high_table_entry NAME FUNCTION 0 = Positions A/B, 1 = Positions C/D 0 = Satellite A(C), 1 = Satellite B(D) 0 = Vertical, 1 = Horizontal 0 = Low band, 1 = High band Options switch available Satellite switch available Polarization switch available Band switch available Low LOF value, 10GHz digit 1GHz digit 100MHz digit 10MHz digit 1MHz digit Table entry number High LOF value, 10GHz digit 1GHz digit 100MHz digit 10MHz digit 1MHz digit Table entry number DEFAULT 0 0 0 0 Depends on cascade input 1 1 1 0000 1001 0111 0101 0000 0010 0001 0000 0110 0000 0000 0100 MAX12005 Chip Information PROCESS: BiCMOS Package Information For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. PACKAGE TYPE 48 TQFN PACKAGE CODE T4877+4 OUTLINE NO. 21-0144 LAND PATTERN NO. 90-0130 13 Satellite IF Switch MAX12005 Revision History REVISION NUMBER 0 1 REVISION DATE 9/10 11/11 Initial release Added Note 5 to Electrical Characteristics table DESCRIPTION PAGES CHANGED — 3 Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits) shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance. 14 © Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 2011 Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc.