SD Card
An SD card slot is provided (callout 52,
Figure 2: Board Component Locations
) for booting the
RFSoC. The ZCU1285 board supports SD 3.0 and has an SD 3.0 compliant voltage level shifter.
To enable SD boot, shunts must be installed for SD1-LS boot mode as indicated in the table in
.
DDR3 Memory
The board provides 2 GB of DDR3 memory utilizing a 64-bit bus and running at 2133 Mb/s. The
memory system is composed of four x16 Samsung 4 Gb, 1.5V K4B4G1646D-BCNB devices. The
memory is accessible through the processing system (PS) of the Zynq Ult RFSoC.
RF Data Converters and Sampling Clocks
The ZCU1285 board provides access to all of the RFSoC RF-ADC and RF-DAC signal and clock
pins. Each RF-ADC and RF-DAC is designed with –70 db isolation at 3 GHz. The four RF-ADC
tiles (224, 225, 226, and 227) are brought out to two Bulls Eye connectors and a header for the
VCM pins (callout 36 and 37,
Figure 2: Board Component Locations
). The four RF-DAC tiles (228,
229, 230, and 231) are brought out to two Bulls Eye connectors and an SMA pair for SYSREF
(callout 36 and 48,
Figure 2: Board Component Locations
). The pinouts for the RF-ADC and RF-
DAC Bulls Eye connectors, and the pinout for the VCM connector are shown in the following
figures.
Chapter 1: ZCU1285 Board Features and Operation
UG1348 (v1.0) July 16, 2019
ZCU1285 Board User Guide
28
