FPGA Mezzanine Card Interface
The ZCU1285 board features one high pin count (HPC) FPGA mezzanine card (FMC) connector
and one low pin count (LPC) FMC connector as defined by the VITA 57.1 FPGA mezzanine card
specification (callout 53 and 54,
Figure 2: Board Component Locations
). The FMC connector is a
10 x 40 position socket. See
Appendix C: VITA 57.1 FMC Connector Pinouts
for a cross-
reference of signal names to pin coordinates. The FMC connectors are identified as FMC2 at JA3
and FMC3 at JA4.
FMC 2 HPC connector JA3 provides connectivity for:
• 80 differential user-defined pairs:
○
34 LA pairs
○
24 HA pairs
○
22 HB pairs
FMC3 LPC connector JA4 provides connectivity for:
• 34 differential user-defined pairs:
○
34 LA pairs
• 4 differential clocks
IMPORTANT! The V
ADJ
voltage on the FMC2 LPC connector tracks VCCO_HP, and on the FMC3 connector it
tracks VCCO_HD.
The connections for each of these connectors are listed in the following two tables.
Table 22: FMC2 HPC Connections at JA3
RFSoC (U1) Pin
Net Name
FMC Pin
H28
FMC2_CLK0_M2C_P
H4
H29
FMC2_CLK0_M2C_N
H5
H30
FMC2_CLK1_M2C_P
G2
G30
FMC2_CLK1_M2C_N
G3
AP26
FMC2_CLK2_BIDIR_P
K4
AR26
FMC2_CLK2_BIDIR_N
K5
AT23
FMC2_CLK3_BIDIR_P
J2
AT24
FMC2_CLK3_BIDIR_N
J3
AP18
FMC2_HA00_CCP
F4
AP17
FMC2_HA00_CCN
F5
AN21
FMC2_HA01_CCP
E2
AN20
FMC2_HA01_CCN
E3
Chapter 1: ZCU1285 Board Features and Operation
UG1348 (v1.0) July 16, 2019
ZCU1285 Board User Guide
43
