Table of contents
Overview
Firmware for PCB CPLD with designator U18. CPLD Device in Chain: LCMX02-256HC
Feature Summary
- Reset
- JTAG
- Power
- PUD_C
- LED
Firmware Revision and supported PCB Revision
See Document Change History
Product Specification
Port Description
| Name / opt. VHD Name | Direction | Pin | Bank Power | Description |
|---|---|---|---|---|
| CPLD_IO / XIO | in | 17 | 1.8V | FPGA Bank 45 P28 |
| DONE | in | 13 | 1.8V | FPGA Configuration DONE_0 Pin |
| EN_PL | out | 20 | 3.3V | Enable module power |
| F_TCK / C_TCK | out | 8 | 1.8V | JTAG to FPGA |
| F_TDI / C_TDI | out | 10 | 1.8V | JTAG to FPGA |
| F_TDO / C_TDO | in | 11 | 1.8V | JTAG to FPGA |
| F_TMS / C_TMS | out | 9 | 1.8V | JTAG to FPGA |
| INIT_B | in | 16 | 1.8V | FPGA INIT_B |
| JTAGMODE | in | 26 | 3.3V | Enable JTAG access to CPLD for Firmware update (zero: JTAG routed to FPGA, one: CPLD access) |
| / LED1 | out | 4 | 3.3V | green LED D1 |
| N.C. / dummy | out | 5 | 3.3V | dummy pin |
| nRST_SC0 / RESIN | in | 21 | 3.3V | B2B Reset_N |
| PROG_B | out | 12 | 1.8V | FPGA Configuration PROGRAM_B_0 Pin |
| PUDC_B | out | 14 | 1.8V | FPGA PUDC_B |
| SC1 | 23 | 3.3V | B2B JM1-32 / 4x5 MODE Pin / currently_not_used | |
| SC2 | inout | 25 | 3.3V | B2B JM1-30 / 4x5 PGOOD Pin |
| SC3 | in | 27 | 3.3V | B2B JM1-28 / 4x5 Power Enable Pin |
| SC4 | 28 | 3.3V | B2B JM1-7 / 4x5 No Sequencing Pin / currently_not_used | |
| TCK / M_TCK | in | 30 | 3.3V | JTAG from B2B connector |
| TDI / M_TDI | in | 32 | 3.3V | JTAG from B2B connector |
| TDO / M_TDO | out | 1 | 3.3V | JTAG from B2B connector |
| TMS / M_TMS | in | 29 | 3.3V | JTAG from B2B connector |
Functional Description
JTAG
JTAG signals routed directly through the CPLD to FPGA. Access between CPLD and FPGA can be multiplexed via JTAGEN (logical one for CPLD, logical zero for FPGA).
Power
EN_PL is set to one.
SC2 (PGOOD) is zero if SC3(EN1) zero else high impedance.
Reset
RESIN is connected to PROG_B.
PUD_C
PUD_C is set to zero. Internal Pullup on power up, see UG570
LED
Green LED D1.
| Blink Sequence | Priority | Description |
|---|---|---|
| ******** | 1 | B2B Reset is set to low |
| *****ooo | 2 | EN1 (power enable) is low |
| ****oooo | 3 | Power problem (use PROG_B pullup to check 1.8V) |
| ***ooooo | 4 | INIT_B low (CRC or IDCODE error, see UG570) |
| *ooooooo | 5 | Done is low (FPGA not programmed, see UG570) |
| User Defined | 6 | XIO is connected to LED |
Appx. A: Change History and Legal Notices
Revision Changes
REV01 to REV02
- Add 4x5 Module control IOs
- Rework Power
- Rework LED
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 |
|---|---|---|---|---|---|
| REV02 | REV01,REV02 | CPLD REV02 working in process | |||
| v.3 | REV01 | REV01 | John Hartfiel | CPLD REV01 , Firmware released 2016-11-02 | |
| 2018-03-14 | v.1 | REV01 | REV01 | Initial release | |
| All |
Legal Notices
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Document Warranty
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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.
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WEEE
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