Acromag XMC-6VLX Series, User Manual

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XMC-6VLX USER’S MANUAL
Acromag, Inc. Tel: 248-295-0310 - 11 - http://www.acromag.com - 11 - www.acromag.com
connector as shown in the following table. For example S3_P and S3_N
form a signal pair. There are two global clock differential pairs available
(S0G_P, S0G_N) and (S18G_P, S18G_N). The P identifies the Positive input
while the N identifies the Negative input.
This XMC P16 Secondary connector is a 114-pin Samtec ASP-103614-05
connector. The connector complies with the ANSI/VITA 42.3-2006.
Rear P4 Field I/O Connector
The rear I/O P4 connector connects directly to the user-programmable
FPGA. The VCCO pins are powered by 2.5 volts and thus will support the 2.5
volt IOStandards. The IOSTANDARD attribute can be set in the user
constraints file (UCF). The example design defines the Rear P4 I/O to
LVCMOS25 (low voltage CMOS) in the user constraints file. The tables
included in the Rear Input Data Register and Rear Output Data Register
sections can be used to map the LVCMOS signal to the signal names given in
the table below.
The rear I/O can alternatively be defined for LVDS_25 (Low-Voltage
Differential Signaling) in the user constraints file. The 2.5 volt IOStandards
available are listed in the Virtex-6 User Guide available from Xilinx.
As LVDS signal pairs, the signals can be grouped as 32 LVDS I/O pairs. The
LVDS pairs are arranged in the same row in table 2.2. For example, RIO1_P
and RIO1_N form a signal pair. The P identifies the Positive input while the
N identifies the Negative input.
Table 2.2: Board Rear Field I/O
Pin Connections .
The example design implements
2.5volt LVCMOS I/O to the rear
connector.
Alternatively, 2.5volt LVDS I/O
can be used on the rear
connector.
Ch. Positive Pin Description Pin Negative Pin Description Pin
0 RIO0_GCLK_P 1 RIO0_GCLK_N 3
1 RIO1_P 2 RIO1_N 4
2 RIO2_P 5 RIO2_N 7
3 RIO3_P 6 RIO3_N 8
4 RIO4_P 9 RIO4_N 11
5 RIO5_P 10 RIO5_N 12
6 RIO6_P 13 RIO6_N 15
7 RIO7_P 14 RIO7_N 16
8 RIO8_P 17 RIO8_N 19
9 RIO9_P 18 RIO9_N 20
10 RIO10_P 21 RIO10_N 23
11 RIO11_P 22 RIO11_N 24
12 RIO12_P 25 RIO12_N 27
13 RIO13_P 26 RIO13_N 28
14 RIO14_P 29 RIO14_N 31
15 RIO15_P 30 RIO15_N 32
16 RIO16_P 33 RIO16_N 35
17 RIO17_P 34 RIO17_N 36
18 RIO18_P 37 RIO18_N 39
19 RIO19_P 38 RIO19_N 40