Octad utilization for 72-bit, 2 Rank, 1 Slot UDIMM/SODIMM/CUDIMM is shown in the following figure. DQ indicates bi-directional data bits, DQS_t/c is the differential data strobe, DM_n is the data mask, CK_t/c is the differential clock pair, CA indicates Command/Address bits, CS is Chip Select, reset_n is the reset input to the UDIMM/SODIMM/CUDIMM, ALERT_N is a bi-directional signal to/from the UDIMM/SODIMM/CUDIMM, and SYS_CLK indicates the System Clock or Reference Clock pair. Refer to the Clocking section for system clock details.
Important: The octad utilization figure is based
on the pinout output by Vivado for this configuration.
Figure 1. Octad Utilization for 72-bit 2 Rank UDIMM/SODIMM/CUDIMM
