6A. Upstream System Ace Interface Connector; 6B. Downstream System Ace Interface Connector - Xilinx Virtex-4 LX Prototype Platform User Manual

Detailed Description

6a. Upstream System ACE Interface Connector

The upstream System ACE interface connector, as shown in
configure the DUT. 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-4 prototype platforms using the
downstream System ACE interface connector.

6b. Downstream System ACE Interface Connector

The downstream System ACE interface connector, as shown in
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.
14
UPSTREAM_TDO
GND
UPSTREAM_TCK
GND
VCC_TMP
19
20
VCC_TMP
VCC_TMP
VCC_TMP
VCC_TMP
GND
Figure 4: Upstream System ACE Interface Connector (20-Pin Female)
GND
VCC_TMP
VCC_TMP
VCC_TMP
VCC_TMP
VCC_TMP
GND
DOWNSTREAM_TCK
GND
DOWNSTREAM_TDO
Figure 5: Downstream System ACE Interface Connector (20-Pin Male)
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17 15 13 11 9 7 5 3 1
18 16 14 12 10 8 6 4 2
VCC3_EN
VCC3_EN
VCC3_EN
VCC3_EN
GND
GND
VCC3_EN
VCC3_EN
VCC3_EN
VCC3_EN
20 18 16 14 12 10 8 6 4 2
19 17 15 13 11 9 7 5 3 1
NC
DOWNSTREAM_TMS
GND
DOWNSTREAM_TDI
GND
Virtex-4 LX/SX Prototype Platform
Figure 4, can be used to
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Figure 5, is used to pass
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UG078 (v1.2) May 24, 2006
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