Detailed Description
User SMA Global Clock Inputs
[ Figure 1-2 , callout 12 ]
The SP623 board provides two single-ended clock input SMAs that can be used for
connecting to an external function generator. These clock inputs can alternatively be used
as a differential pair. The FPGA clock pins are connected to the SMAs as shown in
Note: Jumpers should NOT be installed on AFX SEL headers J99 and J100 if these clock inputs are
used.
Table 1-7:
SMA Clock Input Connections
FPGA Pin
R25
R26
Net Name
SMA_CLK_P
SMA_CLK_N
SMA Connector
J167
J168
User LEDs (Active High)
[ Figure 1-2 , callout 13 ]
DS10 through DS17 are eight active-High LEDs that are connected to user I/O on the
FPGA as shown in Table 1-8 . These LEDs can be used to indicate status, or any other
purpose determined by the user.
Table 1-8:
User LEDs
FPGA Pin
L21
L20
M23
M21
N26
N25
L26
L25
Net Name
LED1
LED2
LED3
LED4
LED5
LED6
LED7
LED8
Reference
Designator
DS17
DS16
DS15
DS14
DS13
DS12
DS11
DS10
User DIP Switches (Active High)
[ Figure 1-2 , callout 14 ]
DIP switch SW7 provides a set of eight active-High switches that connect to user I/O on
the FPGA, as shown in Table 1-9 . These pins can be used to set control pins, or other
functions determined by the user.
SP623 Board User Guide
UG751 (v1.1) September 15, 2010
19
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