ML365 Virtex-II Pro QDR II SRAM Mem. Board
www.xilinx.com
15
UG066 (v1.0) June 29, 2004
1-800-255-7778
Block Descriptions
R
FPGA pins AK17 and AL17 in Bank 4 serve as the OSC_250M_N and OSC_250M_P inputs,
respectively.
SMA Clock Connectors
Two SMA connectors are provided for the input of an off-board differential clock. The
traces from the SMAs are run as a pair to the FPGA where they are terminated with a
50 ohm resistor. AK18 serves as the EXTCLK1_P input, and AL18 serves as the
EXTCLK1_N input for the SMA connector pair.
User I/Os
This subsection describes the devices that connect to the User I/Os of the ML365 board.
GPIO (P19)
The ML365 board contains 16 General-Purpose I/Os (GPIOs) that are accessible through a
2 x 16 .100" pin header (P19). The odd-numbered pins on each header are connected to an
FPGA pin, and the even-numbered pins on each header are connected to GND (refer to
). The GPIO header pins are accessed through I/Os in Bank 0. The header pins
each have a pull-down resistor of 51 ohms.
Table 2-1:
GPIO Header Pins
GPIO Header Pin #
FPGA I/O Pin
GPIO Header Pin #
Ground Connections
G1
AL13
G2
G3
AL12
G4
G5
AD16
G6
G7
AE16
G8
G9
AM14
G10
G11
AM13
G12
G13
AF16
G14
G15
AG16
G16
G17
AH15
G18
G19
AJ15
G20
G21
AD17
G22
G23
AE17
G24
G25
AH16
G26
G27
AJ16
G28
G29
AK16
G30
G31
AF17
G32
Product Not Recommended for New Designs