ADM-XRC-7Z1 User Manual
V2.6 - 14th February 2022
4.8.4 Serial COM Ports
There are two serial COM ports connected to PMC connector P4, as shown in Figure
COM2 uses RS-232 by default but may be configured for RS-485 operation. Please contact Alpha Data for
further details of the RS-485 mode.
PL
P6
PHY
PS
PHY
COM1
COM2
Platform Mgr
COM0
I2C
RS-232
RS-232/485
COM1
COM2
P4
Figure 4 : Serial COM Ports
4.8.5 USB Interfaces
The 7Z1 has three external USB interfaces. Interfaces USB1 and USB2 are connected to rear connector P4,
and USB3 is connected to microUSB connector J1.
By default, the Zynq PS is configured as the USB host to the three external interfaces. However, USB3 can be
set as the host interface by turning on Switch SW2-7. In this case, interface USB0 to the Zynq PS becomes a
downstream port.
PS
PHY
ULPI
4 port
Hub
P4
USB1
USB2
Micro
USB
0
0
0
ExtHostSel
Figure 5 : USB Interfaces
4.9 Zynq PL Block
4.9.1 PL DDR3 Memory
The PL has two banks of DDR3 memory, each consisting of a single 16-bit wide memory device, capable of
running up to 800MHz (DDR-1600). 2Gb devices (Micron MT41J64M16-187E) are fitted as standard to provide
256MB per bank.
The memory banks are arranged for compatibility with the Xilinx Memory Interface Generator (MIG). Full details
of the interface, signalling standards are provided in the example design.
4.9.2 XRM Interface and Front-Panel I/O
The XRM interface provides a high-performance and flexible front-panel interface through a range of
interchangeable XRM modules. Further details of the XRM modules can be found on the Alpha Data website.
The XRM interface consists of two Samtec connectors, CN1 and CN2.
Page 15
Functional Description
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