Pi 2 Design CM4AES Hardware Reference Manual – P0.1
PAGE 10
5
CM4 PORTS AND GPIO
5.1
OVERVIEW
The CM4AES uses a number of the Interface Ports and GPIO from the CM4 for control
and status purposes.
5.2
COMPUTE MODULE 4 PORTS
Certain CM4 Port pins are hardwired and are always available when enabled. The
usage for these ports on the CM4AES is listed below in the following table.
PORT/Signal(s)
CM4AES Use
Description
Ethernet
P8
RJ45 Ethernet Port
*LED_ACT
LED1
Green LED, CM4 Activity
*LED_PWR
LED2
Red LED, Power
Analog_IP0-1
Unused
Camera_GPIO
Unused
*EXT_RST
*RST
Reset Out to Peripherals
USB_P/N
USB2504A
USB Host to USB2504A Hub
USB_OTG_ID
USEL
Factory use only
CAM0-1
Unused
DSI0
Unused
DSI1
P5
DSI Interface for LCD Display
PCIe
P9
M.2 2282 NVMe Socket
HDMI0
P4
External HDMI Connector
HDMI1
P16
Internal, Vertical HDMI Connector
UART 1
P3
Serial Console
SDIO
SD1
Micro-SD Card Socket
Table 4 – CM4 Ports and Usage
5.2.1
CM4 PORT NOTES
1. Ports marked unused are unavailable and not connected on the CM4AES.
2. USB_OTG is used for factory programming of CM4 eMMC. This is only
used with CM4 modules that have built in eMMC. Non-eMMC modules