Xilinx Virtex-4 ML455, Руководство пользователя

Страница: 16 / 54

16 www.xilinx.com Virtex-4 ML455 PCI/PCI-X Board
UG084 (v1.0) May 17, 2005
Chapter 3: Hardware Description
R
User LEDs
The ML455 board provides four user LEDs that can be turned ON by driving the LED
signals Low.
Table 3-3 lists the FPGA pin assignments.
Configuration INIT and DONE LEDs
The ML455 board provides INIT and DONE indicator LEDs, that are turned ON by the
FPGA during the configuration process. The FPGA INIT pin (G15) drives the INIT LED
(D5) buffer transistor (Q2). The FPGA DONE pin (H14) drives the DONE LED (D6) buffer
transistor (Q1). Refer to schematic sheet 15.
Table 3-4 lists the FPGA pin assignments.
139 DQ35 AA3 61 DQS3 Y22
128 DQ36 AC3 133 DQS4 Y1
130 DQ37 AF6 147 DQS5 Y6
136 DQ38 AA7 169 DQS6 AB4
140 DQ39 AA9 183 DQS7 AC1
118 RAS_B AF4 196 SA1 AD8
120 CAS_B AE4 198 SA2 AC8
121 S0_B W4 195 SCL AD1
122 S1_B AD3 193 SDA AD2
194 SA0 AE9 119 WE_B V7
Table 3-2: SDRAM Memory Interface Signal Descriptions (Continued)
SODIMM
Signal
XC4VLX25 SODIMM
Signal
XC4VLX25
J4 Pin # U10 Pin # J4 Pin # U10 Pin #
Table 3-3: User LED Pin Assignments
LED Signal Designation
FPGA Pin Number
(FF668 Package)
USER_LED0 USER1 D1 AF10
USER_LED1 USER2 D2 AF11
USER_LED2 USER3 D3 AC17
USER_LED3 USER4 D4 AB17
Table 3-4: Configuration INIT and DONE LED Pin Assignments
LED Designation
FPGA Pin Number
(FF668 Package)
FPGA_INIT D5 INIT G15
FPGA_DONE D6 DONE H14
www.BDTIC.com/XILINX