Hardware Components
UG0048 User Guide Revision 5.1 11
3.7 LED Device Connections
Eight LEDs are connected to the device through jumpers JP1 to JP8. If the jumpers are in place, the
device I/O can drive the LEDs. The LEDs change based on the following output:
• A 1 on the output of the device lights the LED
• A 0 on the output of the device switches off the LED
• An un-programmed or tristated output may show a faintly lit LED
Note: If the I/O voltage of Bank 5 (on ProASIC3, set by SW8) or Bank 2 (ProASIC3E set by SW8 and SW7
being at the same level) is not at least 2.5 V, the LEDs will not illuminate. A setting of 1.8 V on the voltage
bank will cause extremely faint illumination.
The following table lists the LED and device connections. To use the device I/O for other purposes,
remove the jumpers.
3.8 Switches Device Connections
Four switches are connected to the device through jumpers JP11 to JP14. If the jumpers are in place, the
device I/O can be driven by the switches listed in the following table.
• Pressing a switch drives a 1 into the device. The 1 continues to drive while the switch is in place.
• Releasing a switch drives a zero into the device.
To use the device I/O for other purposes, remove the jumpers.
3.9 LVDS Channels
Four LVDS channels with up to a maximum signaling rate of 350 MHz are supported on the Starter Kit
board. These LVDS signals are brought out to a pair of RJ-45 (CAT-5E) sockets (J40 and J41). For the
position of these connectors, see Figure 1, page 4.
The LVDS signals are driven using 8 differential pairs (consisting of 16 I/O pins) from the west side
(Bank6 and Bank7) of the FPGA device A3PE1500-PQ208. These 16 signals are terminated on the J40
and J41 connectors. The FPGA pins used for LVDS signaling are listed in Tab le 7, page 13.
Table 3 • LED Device Connections
LED Device Connection
D1 U8 Pin 63
D2 U8 Pin 61
D3 U8 Pin 60
D4 U8 Pin 59
D5 U8 Pin 58
D6 U8 Pin 57
D7 U8 Pin 56
D8 U8 Pin 55
Table 4 • Switch Device Connections
Switch Device Connections
SW1 U8 Pin 68
SW2 U8 Pin 67
SW3 U8 Pin 66
SW4 U8 Pin 64
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