Detailed Description
6. Upstream/Downstream Connectors
6a. Upstream System ACE Interface Connector
The upstream System ACE interface connector (P1) can be used to configure the DUT
( Figure 4 ). Any JTAG configuration stream can source this connector. For example, a
System ACE controller with a CompactFlash card can be used to generate very large JTAG
streams for configuring multiple Virtex-5 prototype platforms using the downstream
System ACE interface connector.
X-Ref Target - Figure 4
UPSTREAM_TDO
GND
UPSTREAM_TCK
GND
VCC_TMP
VCC_TMP
VCC_TMP
VCC_TMP
VCC_TMP
19 17 15 13 11 9 7 5 3 1
20 18 16 14 12 10 8 6 4 2
GND
UPSTREAM_TDI
GND
UPSTREAM_TMS
NC
VCC3_EN
VCC3_EN
VCC3_EN
VCC3_EN
GND
GND
UG222_04_051506
Figure 4:
Upstream System ACE Interface Connector (20-Pin Female)
6b. Downstream System ACE Interface Connector
The downstream System ACE interface connector (P3) is used to pass configuration
information to a DUT in a downstream prototype platform board from sources such as a
Parallel Cable III cable or an upstream System ACE interface connector ( Figure 5 ).
GND
VCC_TMP
VCC_TMP
VCC_TMP
VCC_TMP
VCC_TMP
GND
DOWNSTREAM_TCK
GND
DOWNSTREAM_TDO
20 18 16 14 12 10 8 6 4 2
19 17 15 13 11 9 7 5 3 1
GND
VCC3_EN
VCC3_EN
VCC3_EN
VCC3_EN
NC
DOWNSTREAM_TMS
GND
DOWNSTREAM_TDI
GND
UG222_05_051506
X-Ref Target - Figure 5
Figure 5:
Downstream System ACE Interface Connector (20-Pin Male)
14
Virtex-5 LX FPGA Prototype Platform
UG222 (v1.1.1) March 21, 2011
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