ADM-XRC-7Z1 User Manual
V2.6 - 14th February 2022
4.9.2.1 XRM Connector, CN1
Connector CN1 is for general purpose signals, power and module control. The connector is a 180-way Samtec
connector with 3 fields.
The part fitted to the ADM-XRC-KU1 is Samtec QSH-090-01-F-D-A-K.
Full pinout information for this connector is listed in
to
4.9.2.2 XRM Connector CN2
Connector CN2 is for the high-speed serial (MGT) links.
The part fitted to the ADM-XRC-KU1 is Samtec QSE-014-01-F-D-DP-A-K.
Full pinout information for this connector is listed in
.
4.9.2.3 XRM I/F - GPIO
The general purpose IO (GPIO) signals are connected in 4 groups to the Target FPGA. Each group consists of
16 standard I/O pairs, a Regional Clock Capable pair and either 2 or 4 single-ended signals. There are no
on-board terminations on the pairs and any can be used in single-ended modes.
To allow fast data transfer, all of the GPIO signals within a group are delay matched to within 100ps.
All the XRM GPIO signals and FPGA IO banks share a common voltage, XRM_VIO, that can be either 1.8V,
1.5V or 1.2V. The required voltage is stored within the platform management PROM on the XRM.
Group
FPGA
Bank
Name
Function
Group A
16-17
XRM_DA (15:0)
16 diff. Pairs / 32 single-ended
XRM_DA_CC (16)
Regional Clock / GPIO pair / 2 single-ended
SA (1:0)
2 single-ended GPIO
Group B
15-16
XRM_DB (15:0)
16 diff. Pairs / 32 single-ended
XRM_DB_CC (16)
Regional Clock / GPIO pair / 2 single-ended
SB (1:0)
2 single-ended GPIO
Group C
15
XRM_DC (15:0)
16 diff. Pairs / 32 single-ended
XRM_DC_CC (16)
Regional Clock / GPIO pair / 2 single-ended
SC (1:0)
2 single-ended GPIO
Group D
17
XRM_DD (15:0)
16 diff. Pairs / 32 single-ended
XRM_DD_CC (16)
Regional Clock / GPIO pair / 2 single-ended
SD (3:0)
4 single-ended GPIO
Table 17 : XRM GPIO Groups
4.9.2.4 XRM I/F - High-speed Serial Links
Eight MGT links are routed between the Target FPGA and the XRM interface. Lanes (6:0) are routed through the
Samtec QSE-DP connector, CN2. Lane (7) is routed through the Samtec QSH connector, CN1.
4.9.2.5 XRM IO Voltage Override
Each XRM is built with an I2C EEPROM that contains vital product information (VPD) such as part number, serial
number, operating voltage, and product specific information. For designing custom XRMs, contact Alpha-Data for
Page 16
Functional Description
ad-ug-1253_v2_6.pdf
