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Virtex-5 FPGA ML561 User Guide www.xilinx.com 51
UG199 (v1.2) April 19, 2008
R
Chapter 6
Configuration
This chapter provides a brief description of the FPGA configuration methods used on the
Virtex-5 FPGA ML561 Development Board. This chapter contains the following sections:
• “Configuration Modes”
• “JTAG Chain”
• “JTAG Port”
• “Parallel IV Cable Port”
• “System ACE Interface”
Configuration Modes
The Virtex-5 FPGA ML561 Memory Interfaces Development Board includes several
options to configure the Virtex-5 FPGAs. The configuration modes are:
• System ACE mode
• JTAG mode
Table 6-1 shows the Virtex-5 FPGA configuration modes. The Master and Slave (Parallel)
SelectMAP configuration modes are not supported on the Virtex-5 FPGA ML561
Development Board. A separate 6-pin 3x2 header is provide for each FPGA to control the
Mode bits setting. The three headers are P27, P46, and P112 for FPGA #1, FPGA #2, and
FPGA #3, respectively. The even pins (# 2, 4, and 6) of the headers are tied to GND, and the
odd pins (# 1, 3, and 5) are connected to the respective Mode bit FPGA inputs (M0, M1, and
M2, respectively). A weak (4.7KΩ) pull-up is applied to each of these pins to set a logic '1'
by default.
Table 6-1: Configuration Modes
Mode
XCONFIG
P72
JTAG
P114
Mode Jumpers
(3,4)
5 -> 6
(M2)
3 -> 4
(M1)
1 -> 2
(M0)
Master Serial X
(1)
—
(2)
000
Slave Serial X — 1 1 1
Master SelectMAP — — 0 1 1
Slave SelectMAP — — 1 1 0
JTAG — X 1 0 1