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SD Card
An SD card slot is provided (callout 52,
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
Boot Mode Selection
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 UltraScale+ 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,
229, 230, and 231) are brought out to two Bulls Eye connectors and an SMA pair for SYSREF
(callout 36 and 48,
DAC Bulls Eye connectors, and the pinout for the VCM connector are shown in the following
figures.
UG1348 (v1.0) July 16, 2019
ZCU1285 Board User Guide
Figure 2: Board Component
Headers.
Figure 2: Board Component
Figure 2: Board Component
Chapter 1: ZCU1285 Board Features and Operation
Locations) for booting the
Locations). The four RF-DAC tiles (228,
Locations). The pinouts for the RF-ADC and RF-
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