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Online version of this manual and other related documents can be found at https://wiki.trenz-electronic.de/display/PD/SC-CPLD-Firmware

Overview

CPLD Device with designator U1: LCMX02-256HC. Firmware with Standard Configuration for XMOD.

Feature Summary

• JTAG routing
• Pinheader routing

Firmware Revision and supported PCB Revision

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Product Specification

Port Description

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Name / opt. VHD Name	Direction	Pin	Description
A	in	8	XMOD Pin Header / UART RXD (input to adapter)
ACBUS4		27	FTDI / currently_not_used
ACBUS5		28	FTDI / currently_not_used
ADBUS4			5	FTDI / currently_not_used
B	out	12	XMOD Pin Header / UART TXD (output from adapter)
BDBUS2	in	21	FTDI / currently_not_used
BDBUS3	out	20	FTDI / currently_not_used
C	out	9	XMOD Pin Header / TCK
D	in	11	XMOD Pin Header / TDO
E	in	14	XMOD Pin Header / LED
F	out	13	XMOD Pin Header /TDI
FT_B_RX / BDBUS1	out	25	FTDI
FT_B_TX / BDBUS0	in	23	FTDI
G	in	17	XMOD Pin Header / Pushbutton S1
H	out	16	XMOD Pin Header / TMS
JTAGEN	in	26	Enable JTAG access to CPLD for Firmware update (zero: normal IOs, one: CPLD JTAG access). Selectable over S2-1
TCK / ADBUS0	in	30	FTDI
TDI / ADBUS1	in	32	FTDI
TDO / ADBUS2	out	1	FTDI
TMS / ADBUS3	in	29	FTDI
ULED	out	10	LED D4 (RED)
XCLK	in	4	12 MHz OSCI Ref CLK / currently_not_used

 

Functional Description

JTAG

JTAG signals routed directly through the CPLD to FPGA12 pin pinheader. Access between CPLD and FPGA pinheader can be multiplexed via JTAGEN (logical one for CPLD, logical zero for FPGApinheader).

UART

UART is routed through the CPLD.

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