ADM-XRC-7Z1 User Manual
V2.6 - 14th February 2022
4.8 Zynq PS Block
4.8.1 Boot Modes
BootSel1
(SW2-2)
BootSel0
(SW2-1)
Boot Mode
OFF
OFF
JTAG
OFF
ON
Quad SPI
ON
OFF
SD Flash
ON
ON
Reserved
Table 15 : Boot Mode Selection
4.8.2 PS Memory Interfaces
4.8.2.1 Quad SPI Flash Memory
512Mb of QSPI flash memory (Micron N25Q256A11E1240E/MT41K128M16JT) is attached to the PS, and is
used to store Zynq boot images, FPGA bitstreams and data.
4.8.2.2 MicroSD Flash Memory
An on-board microSD card holder is available to store Zynq boot images, FPGA bitstreams and data.
4.8.2.3 PS DDR3 Memory
The PS has one bank of DDR3 memory, consisting of 2 16-bit wide memory devices in parallel to provide a
32-bit data-path capable of running up to 533MHz (DDR-1066). 2Gb devices (Micron MT41K128M16JT-125) are
fitted as standard to provide 512MB per bank.
4.8.3 Ethernet Interfaces
The 7Z1 has two 1000BASE-T Ethernet Interfaces at rear connector P4. Interface ETH0 is connected to the
Zynq PS, while ETH1 is connected to the PL
Both interfaces have a Marvell 88E1512 PHY, connected to the Zynq via RGMII.
PL
P4
PHY
MDI
RGMII
PS
PHY
Magnetics
MDI
RGMII
ETH0
ETH1
Magnetics
Figure 3 : Ethernet Interfaces
Each interface has three status LEDs. The functions of these are shown in
Page 13
Functional Description
ad-ug-1253_v2_6.pdf
