- Created by Mohsen Chamanbaz, last modified on 24 05, 2023
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Overview
Firmware for PCB CPLD with designator U1: LCMXO2-256HC-4SG32I
Feature Summary
Power Management
Power Sequencing
Reset
CPLD JTAG
Boot mode
Firmware Revision and supported PCB Revision
See Document Change History
Product Specification
Port Description
Name / opt. VHD Name | Direction | Pin | Pullup/Down | Bank Power | Description |
---|---|---|---|---|---|
TDO | out | 1 | NONE | 3.3V | JTAG TDO signal connected to FTDI chip via B2B connector |
TDI | in | 32 | UP | 3.3V | JTAG TDI signal connected to FTDI chip via B2B connector |
TCK | in | 30 | NONE | 3.3V | JTAG TCK signal connected to FTDI chip via B2B connector |
TMS | in | 29 | UP | 3.3V | JTAG TMS signal connected to FTDI chip via B2B connector |
F_TDO | in | 4 | NONE | 1.8V | JTAG TDO signal connected to FPGA |
F_TDI | out | 20 | NONE | 1.8V | JTAG TDI signal connected to FPGA |
F_TCK | out | 5 | DOWN | 1.8V | JTAG TCK signal connected to FPGA |
F_TMS | out | 21 | NONE | 1.8V | JTAG TMS signal connected to FPGA |
EN_1V8 | out | 28 | NONE | 3.3V | Enable signal for U20 DC-DC converter 3.3V/1.8V |
EN_2V5 | out | 27 | NONE | 3.3V | Enable signal for U21 DC-DC converter 3.3V/2.5V |
EN_3V3 | out | 8 | NONE | 3.3V | Enable signal for U14 3.3V power switch |
EN_1V0 | out | 9 | NONE | 3.3V | Enable signal for U13 DC-DC converter 3.3V/1.0V |
EN_LPDDR4 | out | 10 | NONE | 3.3V | Enable signal for U18 DC-DC converter 3.3V/1.1V |
EN_2V5_XCVR | out | 23 | NONE | 3.3V | Enable signal for U19 DC-DC converter 3.3V/2.5V_XCVR |
PG_ALL | in | 13 | NONE | 3.3V | Power good input signal that is connected to all DC-DC converters U13,U18,U19,U20 and U21 |
SC_nRST | in | 14 | UP | 3.3V | Reset input signal connected to reset push button on the carrier board directly or indirectly (depends on the used carrier board) via B2B connector. |
SC_BOOTMODE | in | 25 | NONE | 3.3V | Boot mode signal connected to B2B connector. This signal is connected with a dummy signal and does not have any function. |
SC_EN1 | in | 11 | UP | 3.3V | Enable signal connected to B2B connector. This signal is connected with a dummy signal and does not have any function. |
SC_PGOOD | inout | 12 | NONE | 3.3V | PGOOD signal connected to B2B connector |
NOSEQ | inout | 17 | UP | 3.3V | NOSEQ signal connected to B2B connector. This signal is high as long as reset is not activated. |
MR_n | out | 16 | NONE | 3.3V | Reset output signal connected to DEVRST_N Polarfire device reset pin signal via voltage monitor chip U15 (TPS3106K33DBVR) |
Functional Description
JTAG
JTAG signals routed directly through the CPLD to FPGA. Access between CPLD and FPGA can be multiplexed via JTAGSEL pin of CPLD (pin 26) (logical one for CPLD, logical zero for FPGA). This pin is connected to B2B (JM1-pin 89) directly. On the carrier board can be this pin enabled or disabled with a dip switch.
CPLD JTAGSEL (B2B JM1-89) | Description |
---|---|
1 | CPLD access |
0 | FPGA access |
Power
Power sequencing is necessary for this module. To implement a power sequencing a state machine is used. Note that the DC-DC converters do not have seperate power good output. Therefore timers will be used to created desired delay for sequencing. The state machine stages is shown in the following table:
Stage | Enable Signal | Voltage Domain | Timer | Description |
---|---|---|---|---|
IDLE | --- | --- | --- | The state machine will change its stage to PWR1 immediatly after power on. |
PWR1 | Set EN_1V8 | 1.8V | Timer1 is active. | In this stage timer1 will be switched on. The stage will be changed to next stage (PWR2) after about 700 ms and timer1 will be turned off. |
PWR2 | Set EN_LPDDR4, EN_2V5, EN_3V3 | 1.1V , 2.5V, 3.3V | Timer2 is active. | In this stage timer2 will be switched on. The stage will be changed to next stage (PWR3) after about 700 ms and timer2 will be turned off. |
PWR3 | Set EN_1V0, EN_2V5_XCVR | 1V , 2.5V | Timer3 is active. | In this stage timer3 will be switched on. The stage will be changed to next stage (READY) after about 700 ms and timer3 will be turned off. |
READY | --- | --- | --- | In this stage PG_ALL signal is monitored. If PG_ALL is high, state machine staies in this stage otherwise state machine will be changed to ERROR_SYS stage and CPLD will trun all DC-DC converters off. |
ERROR_SYS | Reset all enable signals | 1.8V,1V,1.1V,2.5V,3.3V | --- | The state machine will stay in this stage and user should turn the board off and look for the cause of the error. |
Boot mode
SD card boot mode is the only boot mode variant.
Reset
Reset pins are explained in detail in the following table:
Reset Pin | Direction in CPLD | Description |
---|---|---|
SC_nRST | in | Reset input signal connected to reset push button on the carrier board directly or undirectly (dependent on the used carrier board) via B2B connector. |
MR_n | out | Reset output signal connectd to DEVRST_N polarfire device reset pin signal of FPGA via voltage monitor chip U15 (TPS3106K33DBVR) |
Appx. A: Change History and Legal Notices
Revision Changes
Document Change History
To get content of older revision got to "Change History" of this page and select older document revision number.
Date | Document Revision | CPLD Firmware Revision | Supported PCB Revision | Authors | Description | Firmware release |
---|---|---|---|---|---|---|
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| *.zip |
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Legal Notices
Data Privacy
Please also note our data protection declaration at https://www.trenz-electronic.de/en/Data-protection-Privacy
Document Warranty
The material contained in this document is provided “as is” and is subject to being changed at any time without notice. Trenz Electronic does not warrant the accuracy and completeness of the materials in this document. Further, to the maximum extent permitted by applicable law, Trenz Electronic disclaims all warranties, either express or implied, with regard to this document and any information contained herein, including but not limited to the implied warranties of merchantability, fitness for a particular purpose or non infringement of intellectual property. Trenz Electronic shall not be liable for errors or for incidental or consequential damages in connection with the furnishing, use, or performance of this document or of any information contained herein.
Limitation of Liability
In no event will Trenz Electronic, its suppliers, or other third parties mentioned in this document be liable for any damages whatsoever (including, without limitation, those resulting from lost profits, lost data or business interruption) arising out of the use, inability to use, or the results of use of this document, any documents linked to this document, or the materials or information contained at any or all such documents. If your use of the materials or information from this document results in the need for servicing, repair or correction of equipment or data, you assume all costs thereof.
Copyright Notice
No part of this manual may be reproduced in any form or by any means (including electronic storage and retrieval or translation into a foreign language) without prior agreement and written consent from Trenz Electronic.
Technology Licenses
The hardware / firmware / software described in this document are furnished under a license and may be used /modified / copied only in accordance with the terms of such license.
Environmental Protection
To confront directly with the responsibility toward the environment, the global community and eventually also oneself. Such a resolution should be integral part not only of everybody's life. Also enterprises shall be conscious of their social responsibility and contribute to the preservation of our common living space. That is why Trenz Electronic invests in the protection of our Environment.
REACH, RoHS and WEEE
REACH
Trenz Electronic is a manufacturer and a distributor of electronic products. It is therefore a so called downstream user in the sense of REACH. The products we supply to you are solely non-chemical products (goods). Moreover and under normal and reasonably foreseeable circumstances of application, the goods supplied to you shall not release any substance. For that, Trenz Electronic is obliged to neither register nor to provide safety data sheet. According to present knowledge and to best of our knowledge, no SVHC (Substances of Very High Concern) on the Candidate List are contained in our products. Furthermore, we will immediately and unsolicited inform our customers in compliance with REACH - Article 33 if any substance present in our goods (above a concentration of 0,1 % weight by weight) will be classified as SVHC by the European Chemicals Agency (ECHA).
RoHS
Trenz Electronic GmbH herewith declares that all its products are developed, manufactured and distributed RoHS compliant.
WEEE
Information for users within the European Union in accordance with Directive 2002/96/EC of the European Parliament and of the Council of 27 January 2003 on waste electrical and electronic equipment (WEEE).
Users of electrical and electronic equipment in private households are required not to dispose of waste electrical and electronic equipment as unsorted municipal waste and to collect such waste electrical and electronic equipment separately. By the 13 August 2005, Member States shall have ensured that systems are set up allowing final holders and distributors to return waste electrical and electronic equipment at least free of charge. Member States shall ensure the availability and accessibility of the necessary collection facilities. Separate collection is the precondition to ensure specific treatment and recycling of waste electrical and electronic equipment and is necessary to achieve the chosen level of protection of human health and the environment in the European Union. Consumers have to actively contribute to the success of such collection and the return of waste electrical and electronic equipment. Presence of hazardous substances in electrical and electronic equipment results in potential effects on the environment and human health. The symbol consisting of the crossed-out wheeled bin indicates separate collection for waste electrical and electronic equipment.
Trenz Electronic is registered under WEEE-Reg.-Nr. DE97922676.
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