Digit And Bargraph Leds - XESS XSV Manual

Digit and Bargraph LEDs

The XSV Board has a 10-segment bargraph LED and two more 7-segment LED digits for
use by the FPGA and CPLD. All of these LEDs are active-high meaning that an LED
segment will glow when a logic-high is applied to it.
The table below lists the connections from the FPGA and CPLD to the LEDs. The LEDs
also share the same pins as the uppermost eight bits of the Flash RAM address bus. If
the Flash RAM is programmed with several FPGA bitstreams, then the DIP switch can be
used to select a particular bitstreams which will be loaded into the FPGA by the CPLD.
Switch Virtex
FPGA Pin
SW1 174
SW2 175
SW3 176
SW4 185
DIPSW1 161
DIPSW2 159
DIPSW3 155
DIPSW4 153
DIPSW5 149
DIPSW6 146
DIPSW7 142
DIPSW8 140
XC95108 Flash RAM
CPLD Pin Function
7
50 A13
52 A14
53 A15
54 A16
55 A17
56 A18
58 A19
59 A20
24