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ML630 Board User Guide
www.xilinx.com
21
UG828 (v1.0) September 28, 2011
Detailed Description
FPGA U1 200 MHz 2.5V LVDS Oscillator
Figure 1-2
callout [25]
The ML630 board has one SiTime 2.5V LVDS differential fixed 200 MHz oscillator per
FPGA. Oscillator U22 (located on the bottom of the board) is connected to FPGA U1 as
listed in
Table 1-10
.
References
More information on the SiTime SI9102AI oscillator is available at:
http://www.sitime.com/products/differential-oscillators/sit9102
.
FPGA U2 PROG Push Button, INIT LED and DONE LED
Figure 1-2
callout [26]
Pressing the U2 PROG pushbutton (SW11) grounds the active-Low program pin of the
FPGA. The INIT LED (DS54) lights during FPGA initialization. The DONE LED (DS29)
indicates the state of the DONE pin of the FPGA. When the DONE pin is High, the DONE
LED lights indicating that the FPGA is successfully configured.
FPGA U2 User LEDs, DIP and Pushbutton Switches
Figure 1-2
callout [27]
DS30 through DS35, DS37, and DS38 are eight active-High LEDs that are connected to user
I/O pins on FPGA U2 as shown in
Table 1-11
. These LEDs can be used to indicate status or
any other purpose determined by the user.
Table 1-10:
FPGA U1 LVDS Oscillator U22 Global Clock Connections
FPGA U1 Pin
Net Name
U22 Pin
J33
U1_LVDS_OSC_P
4
H33
U1_LVDS_OSC_N
5
Table 1-11:
FPGA U2 User LEDs
FPGA U2 Pin
Net Name
Reference
Designator
K33
U2_USER_LED1
DS38
L33
U2_USER_LED2
DS37
A37
U2_USER_LED3
DS35
B37
U2_USER_LED4
DS34
B36
U2_USER_LED5
DS33
B35
U2_USER_LED6
DS32
A35
U2_USER_LED7
DS31
A34
U2_USER_LED8
DS30