Differential Oscillators; Differential Sma Clock - Xilinx Virtex-II Pro ML324 User Manual

Detailed Description

6. Differential Oscillators

The ML32x platform has two differential oscillators, each wired to LVDS inputs on the
FPGA. These connect to the FPGA clock pins shown in
are powered by 3.3V or the VCCO 2.5V power supply.
Table 6: Differential Oscillator Pin Connections

7. Differential SMA Clock

There are four pairs of 50Ω SMA connectors that can be used (with 100Ω termination) to
connect to an external function generator. These connect to the FPGA pins as shown in
Table
Table 7: Differential Clock Pin Connections
14
ML324
Label
Clock Name
CLK_BREF2_TOP_P
X2
CLK_BREF2_TOP_N
CLK_BREF_BOT_P
X4
CLK_BREF_BOT_N
7. These SMA connectors can also be used as eight single-ended clock inputs.
ML324
Label
Clock Name
J21 CLK_BREF_TOP_P
J23 CLK_BREF_TOP_N
J41 CLK_BREF2_BOT_P
J42 CLK_BREF2_BOT_N
J16 CLK_DIFF_TOP_P
J19 CLK_DIFF_TOP_N
J47 CLK_DIFF_BOT_P
J48 CLK_DIFF_BOT_N
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Table
ML325
Pin Clock Name
K20 CLK_BREF2_TOP_P
J20 CLK_BREF2_TOP_N
AT20 CLK_BREF_BOT_P
AR20 CLK_BREF_BOT_N
ML325
Pin Clock Name
E20 CLK_BREF_TOP_P
D20 CLK_BREF_TOP_N
AK20 CLK_BREF2_BOT_P
AL20 CLK_BREF2_BOT_N
M20 CLK_DIFF_TOP_P
N20 CLK_DIFF_TOP_N
AJ21 CLK_DIFF_BOT_P
AH21 CLK_DIFF_BOT_N
Virtex-II Pro ML324 and ML325 Platform
6. The differential oscillators
Pin
G21
F21
AU22
AT22
Pin
G22
F22
AT21
AU21
K21
J21
AN22
AP22
UG063 (v1.2) May 30, 2006
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