ADM-XRC-9R1 User Manual
V1.7 - 16th Sept 2020
3.5 Zynq PS Block
3.5.1 Boot Modes
BootMode0
(SW1-1)
BootMode1
(SW1-2)
BootMode2
(SW1-3)
BootMode3
(SW1-4)
Boot Mode
ON
ON
ON
ON
JTAG
ON
OFF
ON
ON
Quad SPI
OFF
OFF
ON
ON
SD Flash
-
-
-
-
Reserved
Table 14 : Boot Mode Selection
3.5.2 Quad SPI Flash Memory
1Gb Flash Memory (2x Micron MT25QU512AB) is used for storing executable code and data for the PS and PL,
such as a bootloader, operating system and bitstream.
The flash memory can only be accessed by the PS.
Utilities for erasing, programming and verification of the flash memory are available in Linux.
Write Protect
The Flash Write Protect (WP#) pin is connected to an inverted version of the NVMRO signal at the XMC
interface. When the NVMRO signal is active (High), all writes to the flash will be inhibited. This state will be
indicated by the Amber LED as shown in
3.5.3 MicroSD Flash Memory
A MicroSD card is used for storing executable code and data for the PS and PL, such as a bootloader, operating
system and bitstream.
The flash memory can only be accessed by the PS.
3.5.4 PS DDR4 Memory
The ADM-XRC-9R1 is fitted with one bank of PS DDR4 SDRAM. The bank is made up of a two 16-bit wide
memory devices in parallel to provide a 32-bit datapath capable of running up to 1200MHz (DDR4-2400). 8Gbit
devices (Micron MT40A512M16HA-083) are fitted as standard to provide 2GByte of memory.
Full details of the interface, signaling standards and an example design are provided in the ADM-XRC-9R1
example design.
3.5.5 PS MGT Links
There are a total of 4 MGT links connected to the PS Multi-Gigabit Transceivers. See
details
Page 15
Functional Description
ad-ug-1353_v1_7.pdf