Oscillator Sockets; Single-Ended Sma Clocks; Differential Oscillators - Xilinx Virtex-II Pro ML320 User Manual

Detailed Description

4. Oscillator Sockets

The ML32x platform has two crystal oscillator sockets, each wired for standard
LVTTL-type oscillators. These connect to the FPGA clock pins as shown in
oscillator sockets accept both half- and full-sized oscillators and are powered by the VCCO
2.5V power supply.
Table 4: OSC Connections

5. Single-Ended SMA Clocks

The ML32x platform has two SMA clock inputs that allow connection to an external
function generator. These connect to the FPGA clock pins as shown in
Table 5: SMA Clock Pin Connections

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 the VCCO 2.5V power supply.
Table 6: Differential Oscillator Pin Connections
ML320
Label
Clock Name
CLK_BREF_TOP_P
X2
CLK_BREF_TOP_N
CLK_BREF2_BOT_P
X4
CLK_BREF2_BOT_N
Virtex-II Pro ML320, ML321, ML323 Platform
UG033 (v2.1) P/N 0402071 March 19, 2004
ML320
Label Clock Name
X3 CLK_OSC_TOP
X5 CLK_OSC_BOT
ML320
Label Clock Name
J27 CLK_SMA_TOP
J43 CLK_SMA_BOT
Pin Clock Name
C11 CLK_BREF2_TOP_P
D11 CLK_BREF2_TOP_N
Y12 CLK_BREF_BOT_P
W12 CLK_BREF_BOT_N
ML321
Pin Clock Name
E12 CLK_OSC_TOP D14
V11 CLK_OSC_BOT AC13
ML321
Pin Clock Name
F12 CLK_SMA_TOP
U11 CLK_SMA_BOT
ML321
Pin
C13
B13
AD14
AE14
Table
ML323
Pin Clock Name
CLK_OSC_TOP
CLK_OSC_BOT
Table 5.
ML323
Pin Clock Name
E14 CLK_SMA_TOP
AB13 CLK_SMA_BOT
Table 6. The differential oscillators
ML323
Clock Name
CLK_BREF2_TOP_P
CLK_BREF2_TOP_N
CLK_BREF_BOT_P
CLK_BREF_BOT_N
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4. The
Pin
D18
AJ17
Pin
E18
AH17
Pin
J17
H17
AK18
AL18
17