Table of contents
Firmware for PCB CPLD with designator U18. CPLD Device in Chain: LCMX02-256HC
- Reset Management
- Power Management
Firmware Revision and supported PCB Revision
See Document Change History
|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|
|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|
|SC1||23||3.3V||B2B JM1-32 / 4x5 Boot 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|
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).
EN_PL is set constant one.
SC2 (PGOOD) is zero conditions:
- B2B SC3(EN1) is zero
- PROG_B is zero, but B2B nRST_SC0 and B2B SC3(EN1) are set high. In this case PROG_B is not set high with CPLD pullup, so 1.8V is missing on CPLD IO Bank is missing.
PROG_B is set to zero if SC3(EN1) is zero or nRST_SC0 is zero, otherwise high impedance. Internal Pullup on PROG_B CPLD is enabled.
PUD_C is set to zero. Internal Pullup on power up, see UG570
Green LED D1.
|********||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
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 finished, Firmware lelesed 2018-06-05|
|v.3||REV01||REV01||John Hartfiel||CPLD REV01 , Firmware released 2016-11-02|
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