Pn4 I/O; Pn4 Signalling Voltage; Xmc Interface; Primary Xmc Connector, P15 - Alpha Data ADM-XRC-5T2-ADV User Manual

4.8.

Pn4 I/O

Up to 16 pairs of differential or 32 single-ended signals are available on Pn4 and are sourced
from Bank 18 of the User FPGA. All of the signal traces are routed as 100 Ohm differential
pairs and each pair is matched in length. The worst case difference in trace length between
any two pairs is 10mm. The pairs are distinguished by the signals names listed below and
follow the pattern +/-: 1/3, 2/4, 5/7, 6/8...
Signal
PN4_P1
PN4_N1
PN4_P3
PN4_N3
PN4_P5
PN4_N5
PN4_P7
PN4_N7
PN4_P9
PN4_N9
PN4_P11
PN4_N11
PN4_P13
PN4_N13
PN4_P15
PN4_N15
In Table 9, pins marked [CC] are clock capable and may be used to access the regional
clocking resources in the FPGA.
Banks 18 is fitted with resistors to allow DCI terminations on Pn4 signals.

4.8.1. Pn4 Signalling Voltage

The signalling voltage on the Pn4 connector (and User FPGA Bank 18) is selectable by
switch SW2B.
It should be noted that the switch does not directly route power. The switch position is
monitored by the board control logic which, in turn, sets a power multiplexer to be either 2.5V
or 3.3V.
4.9.

XMC Interface

4.9.1. Primary XMC Connector, P15

The MGT (GTP) links connected between the user FPGA and the Primary XMC connector,
P15, are compatible with PCI Express and Serial RapidIO. Depending upon the carrier card,
they may also be used for user-specific applications.
ADM-XRC-5T2-ADV User Manual
Version 1.0
Page 13
FPGA Pin Pn4 Pin
AF11 1
AF12 3
AF9 5
AF10 7
AF7 9
AE7 11
AC5 [CC] 13
AC6 [CC] 15
AG4 [CC] 17
AH4 [CC] 19
AH6 21
AH5 23
AB9 25
AB8 27
AB11 29
AC10 31

Table 9 Pn4 to FPGA Assignments

Switch 2B
Open
Closed

Table 10 Pn4 I/O Voltage Selection

ADM-XRC-5T2-ADV User Manual
Pn4 Pin FPGA Pin
2 AE9
4 AE10
6 AD8
8 AE8
10 [CC] AF5
12 [CC] AF6
14 [CC] AB7
16 [CC] AB6
18 AD10
20 AD11
22 AC8
24 AC9
26 AL5
28 AK5
30 AJ7
32 AK7
Pn4 voltage
2.5V
3.3V
Signal
PN4_P2
PN4_N2
PN4_P4
PN4_N4
PN4_P6
PN4_N6
PN4_P8
PN4_N8
PN4_P10
PN4_N10
PN4_P12
PN4_N12
PN4_P14
PN4_N14
PN4_P16
PN4_N16