Virtex-II Pro Prototype Platform User Guide
www.xilinx.com
17
UG027 / PN 0402044 (v1.6) October 25, 2002
1-800-255-7778
Detailed Description
R
5a. Upstream System ACE Connector
The Upstream System ACE connector, as shown in
Figure 1-4
, can be used to configure the
DUT. This connector can be sourced by any JTAG configuration stream. For example, a
System ACE Controller with CompactFlash can be used to generate very large JTAG
streams for configuring multiple Virtex-II Pro Prototype Platforms using the Downstream
System ACE connector.
Table 1-3:
JTAG Mode
Configuration Port Header
/Parallel IV Cable
Connector
Parallel Cable III
Pins
Parallel Cable IV
Pins
VCC3
VCC
VCC
GND
GND
GND
TMS
TMS
TMS
TDI
TDI
TDI
TDO
TDO
TDO
TCK
TCK
TCK
INIT
INIT
Figure 1-4:
Upstream System ACE Connector, 20-Pin Female
UG027_04_030402
NC
UPSTREAM_TMS
GND
UPSTREAM_TDI
GND
V5
GND
UPSTREAM_TCK
GND
UPSTREAM_TDO
GND
VCC3_EN
VCC3_EN
VCC3_EN
VCC3_EN
V5
V5
V5
V5
GND
1
3
5
7
9
11
13
15
17
19
2
4
6
8
10
12
14
16
18
20