ML365 Virtex-II Pro QDR II SRAM Mem. Board
www.xilinx.com
27
UG066 (v1.0) June 29, 2004
1-800-255-7778
FPGA Configuration
R
JTAG Configuration
The Virtex-II FPGA is programmable in JTAG mode. The JTAG chain contains two on-
board devices (FPGA and SystemAce).
The JTAG input connector is P103, wired to the TSTCFG pins of the SystemAce Controller
U2. The JTAG input connector is the start of the JTAG chain. The configuration output port
of the SystemAce Controller is wired to the FPGA via P1, P113, and P114 pins as shown in
. The FPGA can be isolated from the JTAG chain by removing the jumper blocks
from the P1 pins as specified in
shows how to build the JTAG chain,
shows the connections for the JTAG connector P1.
Figure 2-6:
SystemAce and JTAG Connectors
1
Pushbutton
SW6
+3.3 V
+5 V +2.5 V
P26
P111
10K
Resistors (4)
DIP Switch
SW5
SYSACE_CFGPROG#
SYSACE_CFGINIT#
CCLK
PROG_B
IO_L01P_4/INIT_B
DONE
M0
M1
M2
HSWAP_EN
TCK
CCLK
PROG_B
DIN
PROG
INIT
1
2
3
4
5
6
7
8
9
SYSACE_TDO
TCK
TMS
FPGA_TDO
FPGA_TDO
FPGA_TDI
C31
D5
F6
AK6
F28
G27
C4
G8
AH8
D30
AL5
AJ7
AH27
AJ28
AK29
F29
F7
TDI
TDO
TMS
PWRDWN_B
DXN
DXP
VBATT
RSVD
XC2V3000
U1I
P1
+3.3 V
7
6
5
4
3
2
1
TMS
TDO
TCK
ug066_c2_06_062804
Table 2-12:
JTAG Connector Pins (P1)
Pin
Number
Function
1
3.3 Volts
2
GND
3
N/C
4
TCK
5
TDO
6
FPGA_TDI
7
TMS
Product Not Recommended for New Designs