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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

See Document Change History

Product Specification

Port Description

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 12 pin pinheader. Access between CPLD and pinheader can be multiplexed via JTAGEN (logical one for CPLD, logical zero for pinheader).

UART

UART is routed through the CPLD.

Output	Input
B	BDBUS0
BDBUS1	A

LED

ULED D4 (RED) is E xor not G

Appx. A: Change History and Legal Notices

Revision Changes

REV01 to older REV01
- no logical changes

Document Change History

To get content of older revision got to "Change History" of this page and select older document revision number.

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Date	Document Revision	CPLD Firmware Revision	Supported PCB Revision	Authors	Description
		REV01	REV03, REV02		No changes, also PCB REV03 compatible
2017-04-26	v.7	REV01	REV02	John Hartfiel	REV01 finished (rework without logical changes released 2017-04-04)
2016-04-11	v.1	---	REV02		Initial release
	All

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