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TPMC632 User Manual Issue 1.0.6
Page 15 of 49
4.4.2 JTAG
The JTAG-chain is accessible from the JTAG Header, from the Debug Connector or from the PMC-Interface.
These interfaces are connected in parallel, so only one connection should be made to avoid signal
contentions/possible hardware damage.
For direct FPGA configuration, FPGA readback or in-system diagnostics with ChipScope, the JTAG Header
can be used to access the JTAG-chain. The JTAG-chain can be extended to include the TPMC632
configuration CPLD.
XCF16/32
XC6SLX...T
PEX8112
XC2C32
TDI TDO
TDI TDO
TDI TDO
TDI TDO
MU
X
P
M
C
-C
onn
ec
tor
D
ebu
g-
C
onn
ec
tor
J11/J12
X3
X2
S3
JT
A
G
-H
ead
er
Figure 4-5 : JTAG-Chain
S3
ON
Include configuration CPLD to JTAG chain.
OFF
Bypass configuration CPLD (default)
S4
ON
Not used
OFF
Figure 4-6 : Configuration DIP-Switch Settings
4.4.3 Board Configuration CPLD
The Board Configuration CPLD (BCC) is factory configured, and handles the basic board setup.
Changing or erase the BCC content leads to an inoperable TPMC632 FPGA configuration.