MINI E-MLX

Mini E-MLX Hardware Description Mini E-MLX Hardware Description Overview This document describes the hardware of Mini E-Mlx in a short form. Detailed description is available in file “Mini E-Mlx hardware.doc” REVISION 1.0 - JUNE 21, 2017 Mini E-MLX Hardware Description Contents 1. Introduction .......................................................................................................................................... 4 1.1. Differences with E-Mlx ....................................................................................................................... 4 1.2. Mini-Dins ............................................................................................................................................. 6 1.2.1. Mini-Din 9 ...................................................................................................................................... 6 1.2.2. Mini-Din 8 ...................................................................................................................................... 6 2. PCB Architecture ................................................................................................................................... 7 2.1. USB interface....................................................................................................................................... 8 2.2. Analog MUST ....................................................................................................................................... 8 2.3. Digital MUST........................................................................................................................................ 8 2.4. Digital IC Test Output.......................................................................................................................... 9 2.5. Programmable power supplies .......................................................................................................... 9 2.6. Bi-directional I/Os and I²C interface ................................................................................................ 10 2.7. Standard LIN interface ...................................................................................................................... 11 2.8. Fast LIN interface .............................................................................................................................. 11 3. Annexes ............................................................................................................................................... 12 3.1. References......................................................................................................................................... 12 3.2. PCB arrangement .............................................................................................................................. 13 4. Contact ................................................................................................................................................ 14 5. Disclaimer ............................................................................................................................................ 14 History records ........................................................................................................................................ 15 Page 2 of 15 REVISION 1.0 - JUNE 21, 2017 Mini E-MLX Hardware Description Table of figures Figure 1: Old E-Mlx MM connection to board .......................................................................................... 5 Figure 2: Mini-Din 9 pinning ...................................................................................................................... 6 Figure 3: Mini-Din 8 pinning ...................................................................................................................... 6 Figure 4: PCB architecture ......................................................................................................................... 7 Figure 5: Analog MUST driver.................................................................................................................... 8 Figure 6: Digital MUST ............................................................................................................................... 8 Figure 7: Test output interface.................................................................................................................. 9 Figure 8: Programmable power supplies .................................................................................................. 9 Figure 9: Free I/Os .................................................................................................................................... 10 Figure 10: Fast LIN interface .................................................................................................................... 11 Page 3 of 15 REVISION 1.0 - JUNE 21, 2017 Mini E-MLX Hardware Description 1. Introduction The Mini E-Mlx is an evolution of the E-Mlx. It is intended to replace it in the near future. The reason of this evolution is mainly triggered by the fact that E-Mlx needs a parallel port that is disappearing in the new coming PC generations. 1.1. Differences with E-Mlx Removed functionalities:  Not anymore able to mimic old Crash Barrier E5 emulator.  3 programmable power supplies instead of 4 (Use Vbat for the fourth one).  Programmable power supplies limited to 100mA output current (No fan). Changed functionality:  PC connection through a USB 2.0 interface (USB 1.0 compatible)  No need for power supply (for digital MUST) Added functionalities:  Enhanced MMF processor (Transparent to user but run faster with less code).  Support of real time debugging introduced in MICE for MelexCM.  Flash programming through LIN layer and LIN protocol  Flash programming through LIN layer and Melexis Fast LIN protocol  Flexible connection to a remote hardware (for conformance test for example). IMPORTANT: Due to the lightly different use of Mini-EMlx compared to E-Mlx MM, the pinning of Mini-Din 9 is slightly different: Pin 1 2 3 4 5 6 7 8 9 Name GND TI0 VOUT0 LINMUST TI1 VBAT VOUT1 TO VOUT2 Mini E-Mlx Description Ground Digital MUST output (LSB) Programmable supply 0 LIN or analog MUST output Digital MUST output (MSB) Car battery (Input) Programmable supply 1 Test Output of D.U.T Programmable supply 2 Name GND EXTRA1 VOUT0 MUST EXTRA2 VOUT3 VOUT1 MICE VOUT2 Old E-Mlx MM Description Ground Free N open drain Programmable supply 0 Analog MUST output Free N open drain Programmable supply 3 Programmable supply 1 Test output Programmable supply 2 The main difference is that there are now only 3 programmable supplies instead of 4. E-Mlx MM VOUT3 is now removed and replaced by a VBAT. If Mini E-Mlx is used for pure digital exchanges (i.e. Test inputs are MUST digital), there is no need to connect this pin. If analog MUST, LIN, Fast LIN or any VOUT is used, a VBAT (12V) must be provided to Mini E-Mlx. Page 4 of 15 REVISION 1.0 - JUNE 21, 2017 Mini E-MLX Hardware Description Other differences: Although E-Mlx MM was designed to interface analog MUST pin, it was possible to use NMOS open drain outputs EXTRA1 and EXTRA2 to mimic analog MUST in a digital form. The typical schematic used on the evaluation board for such ICs was as shown on Figure 1. E-Mlx MM Vdd (From board or Emulator) Programmable supply EXTRA i Board Vdd 100 R1 IC test input 100K R2 Evaluation board Figure 1: Old E-Mlx MM connection to board R1 was a low ohmic resistance to allow fast 0 to 1 transitions, while R2 was a high ohmic pull-down to force IC test inputs to 00 (i.e. no test) while E-Mlx MM was not connected. IMPORTANT: With new Mini E-Mlx, pins EXTRA[2:1] are now replaced by CMOS outputs TI[1:0] (74HCT00 with programmable 3.3V or 5.0V), therefore, the resistance R1 should be removed while R2 should remain. Note that keeping R1 is forcing 50mA at 5V supply when output is low and could damage the Mini E-Mlx. It is therefore mandatory to remove it (for both outputs). To insure compatibility with E-Mlx, users may add a jumper in the case Vdd is provided from the board, else do nothing as programmable supply used by E-Mlx is VOUT3 that does not exist in Mini E-Mlx. Page 5 of 15 REVISION 1.0 - JUNE 21, 2017 Mini E-MLX Hardware Description 1.2. Mini-Dins The Mini E-Mlx has 2 mini-din connectors, one 8 pins and one 9 pins. 1.2.1. Mini-Din 9 8 7 9 3 4 1 6 5 2 Mini-Din 9 female, front view Pin 1 2 3 4 5 6 7 8 9 Name GND TI0 Vout0 LINMUST TI1 Vbat Vout1 TO Vout2 Dir. Out Out Out Out In or Out Out In Out Description Ground Digital MUST output (LSB) Programmable supply 0 LIN or analog MUST output Digital MUST output (MSB) Car battery (*) Programmable supply 1 Test Output of D.U.T Programmable supply 2 Figure 2: Mini-Din 9 pinning (*): Shared with mini-din 8 1.2.2. Mini-Din 8 This mini-Din is free for future uses like a communication with another tool. 7 8 6 3 5 4 2 1 Mini-Din 8 female, front view Pin 1 2 3 4 5 6 7 8 Name GND SDA IO0 Vbat SCL IO1 IO2 IO3 Dir. Out Bi In or Out Out Bi Bi Bi Description I²C serial data output Bi-directional CMOS I/O Car battery (**) I²C serial clock output Bi-directional CMOS I/O Bi-directional CMOS I/O Bi-directional CMOS I/O Figure 3: Mini-Din 8 pinning (**): Shared with mini-din 9 Page 6 of 15 REVISION 1.0 - JUNE 21, 2017 Mini E-MLX Hardware Description 2. PCB Architecture The architecture of Mini E-Mlx is given on Figure 4. Figure 4: PCB architecture Page 7 of 15 REVISION 1.0 - JUNE 21, 2017 Mini E-MLX Hardware Description 2.1. USB interface The USB interface is made by a Cypress CY68013A which is an Intel 8051 with an extra USB hardware. The program of the 8051 is stored in an on-chip RAM. The PC software takes care of uploading it at startup. This arrangement allows easy firmware updates. 2.2. Analog MUST The analog must levels are generated using an analog multiplexer (DG408) as shown on Figure 5. 100 D/A channel 6 G=2.6 V3/2 100nF 100 D/A channel 5 G=2.6 V1 Analog MUX 100nF 100 D/A channel 4 G=1 Analog MUST V1/2 100nF Figure 5: Analog MUST driver Warning: Usage of analog MUST needs Vbat to be provided to Mini E-Mlx. Name V3/2 V1 V1/2 Min 0.5V 0.5V 0.5V Max 8.5V 8.5V 3.3V Step 33.5mV 33.5mV 13mV 2.3. Digital MUST Digital MUST is directly driven by the MMF processor (e.g; the Xilinx) through standard 74HCT buffers. Those buffers have a selectable supply of 5V or 3.3V using port bit PWR5V (see chapter Error! Reference source not found.). 3.3V 5.0V 0 1 PWR5V From Xilinx MUST[1:0] TI[1:0] (To mini-din 9) 2 2 Figure 6: Digital MUST Page 8 of 15 REVISION 1.0 - JUNE 21, 2017 Mini E-MLX Hardware Description 2.4. Digital IC Test Output The IC Test output (TO) is read through a standard 74HCT buffer that has a selectable supply of 5V or 3.3V using port bit PWR5V (see chapter Error! Reference source not found.) 3.3V 5.0V 0 1 From Xilinx PWR5V To Xilinx XTO TO (From mini-din 9) Figure 7: Test output interface 2.5. Programmable power supplies The 3 programmable power supplies can only operate when a Vbat is provided (USB is not able to source enough current for them). The Vbat is first stepped up to 22V by a DC-DC converter (LM2587S) that is then distributed to the 3 linear regulators (OPA547) controlled by 3 outputs of the D/A converted described in chapter Error! Reference source not found.. A block iagram is given in Figure 8. Vbat DC-DC converter 22V 3 x OPA547 G=5.7 Vout2 D/A channel 2 Enable XES2 G=5.7 Vout1 D/A channel 1 Enable XES1 D/A channel 0 G=5.7 Vout0 Enable XES0 Figure 8: Programmable power supplies Notes: a) b) c) d) Each output as an internal current limitation to 100mA and a thermal shutdown. Each output can range from 0.8V to 18.8V by steps of 78mV (all values are typical). When ENABLE is de-asserted, corresponding Vout is in high impedance mode. XESi are port bits described in chapter Error! Reference source not found. Page 9 of 15 REVISION 1.0 - JUNE 21, 2017 Mini E-MLX Hardware Description 2.6. Bi-directional I/Os and I²C interface 4 bi-directional I/Os are available on mini-din 8 for connections to a future external hardware. The 4 outputs are driven by a 5V supplied tri-state quad buffer (74HCT125). The 4 inputs are read through inverters (74HC04). Note: The Cypress I²C bus is also available on mini-din 8 (without any protecting buffer). Xoe3 Xout3 IO3 Xin3 Xoe2 Xout2 IO2 Xin2 To/From Xilinx ports To mini-din 8 Xoe1 Xout1 IO1 Xin1 Xoe0 Xout0 IO0 Xin0 Figure 9: Free I/Os Notes: - Mini-din 8 is described in chapter 1.2.2. Page 10 of 15 REVISION 1.0 - JUNE 21, 2017 Mini E-MLX Hardware Description 2.7. Standard LIN interface This is done using via a TH8080. 2.8. Fast LIN interface Programming with a high speed on the LIN bus cannot be done using TH8080 due to slope limitations of the LIN standard that limit its baud rate. The Schematic used is given in Figure 10 Vbat (12V) 1K 2.2K LIN BUS T1 TX_HSPD 2.2K Figure 10: Fast LIN interface When T1 is off, the voltage on the bus is reduced from Vbat to Vlin  2.2 *12  4.89V 2.2  2.2  1 The output impedance is Zout = 2.2K // ( 2.2K + 1K) = 1.3K When T1 is on, Vlin = 0, and Zout = 2.2K // 2.2K = 1.1K This schematic is compatible with Cooling and LIN, i.e. with a serial inductance up to 100µH and with the target bus frequency of 100 KHz. Page 11 of 15 REVISION 1.0 - JUNE 21, 2017 Mini E-MLX Hardware Description 3. Annexes 3.1. References [1] Mmf format reference, available at http://goliath.mucontrol.elex.be/docs/References/MmfFormat Page 12 of 15 REVISION 1.0 - JUNE 21, 2017 Mini E-MLX Hardware Description 3.2. PCB arrangement Dimensions are in millimeters 109 Ø 1 : Hole 5 8.5 Ø 5.1 : No component here 5 as7c 31026b as7c 31026b Mini DIN8 lp 39 61 lp 39 61 opa 547 24M 52 USB 240 2 opa 547 Xilinx PQ208 TH 80 12 as7c 31026b Mini DIN9 C601, C604 Led opa 547 LM 25 87 12 CY68013 Max 521 5 3 5 8.5 C101, C102, C103 Nothing in this area No component higher than 3mm in this area PCB top 20.8 USB Mini-Din 8 4.6 PCB bottom Page 13 of 15 REVISION 1.0 - JUNE 21, 2017 Mini E-MLX Hardware Description 4. Contact For the latest version of this document, go to our website at www.melexis.com. For additional information, please contact our Direct Sales team and get help for your specific needs: Europe, Africa Telephone: +32 13 67 04 95 Email : sales_europe@melexis.com Americas Telephone: +1 603 223 2362 Email : sales_usa@melexis.com Asia Email : sales_asia@melexis.com 5. Disclaimer The information furnished by Melexis herein (“Information”) is believed to be correct and accurate. Melexis disclaims (i) any and all liability in connection with or arising out of the furnishing, performance or use of the technical data or use of the product(s) as described herein (“Product”) (ii) any and all liability, including witho ut limitation, special, consequential or incidental damages, and (iii) any and all warranties, express, statutory, implied, or by description, including warranties of fitness for particular purpose, noninfringement and merchantability. No obligation or liability shall arise or flow out of Melexis’ rendering of technical or other services. The Information is provided "as is” and Melexis reserves the right to change the Information at any time and without notice. Therefore, before placing orders and/or prior to designing the Product into a system, users or any third party should obtain the latest version of the relevant information to verify that the information being relied upon is current. 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The Products sold by Melexis are subject to the terms and conditions as specified in the Terms of Sale, which can be found at https://www.melexis.com/en/legal/terms-andconditions. This document supersedes and replaces all prior information regarding the Product(s) and/or previous versions of this document. Melexis NV © - No part of this document may be reproduced without the prior written consent of Melexis. (2016) ISO/TS 16949 and ISO14001 Certified Page 14 of 15 REVISION 1.0 - JUNE 21, 2017 Mini E-MLX Hardware Description History records Revision Date Name Comment 1.0 Ph. Laugier Created from “Mini E-Mlx hardware.doc” 02 May, 2007 Page 15 of 15 REVISION 1.0 - JUNE 21, 2017