BM1880AA EDB
Hardware User Manual
Secret
All rights reserved
Page 12
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Total 13
GND
Pin 1
Pin 2
GND
UART0_CTS
Pin 3
Pin 4
PWR_BTN_N
UART0_TxD
Pin 5
Pin 6
RST_BTN_N
UART0_RxD
Pin 7
Pin 8
SPI1_SCLK
UART0_RTS
Pin 9
Pin 10
SPI1_SDI
UART1_TxD
Pin 11
Pin 12
SPI1_CS
UART1_RxD
Pin 13
Pin 14
SPI1_SDO
I2C0_SCL
Pin 15
Pin 16
I2S0_FS
I2C0_SDA
Pin 17
Pin 18
I2S0_SCLK
I2C1_SCL
Pin 19
Pin 20
I2S0_SDO
I2C1_SDA
Pin 21
Pin 22
I2S0_SDI
GPIO0
Pin 23
Pin 24
GPIO62
GPIO1
Pin 25
Pin 26
GPIO64/I2S1_FS
GPIO3
Pin 27
Pin 28
GPIO63/I2S1_SCLK
GPIO7
Pin 29
Pin 30
GPIO66/I2S1_SDO
GPIO50
Pin 31
Pin 32
GPIO65/I2S1_SDI
GPIO51
Pin 33
Pin 34
GPIO67
+1V8
Pin 35
Pin 36
+12V
+5V
Pin 37
Pin 38
+12V
GND
Pin 39
Pin 40
GND
3.6
Antenna
The EDB is equipped with a realtek RT8821 WLAN basedband processor and RF transceiver which
supports IEEE802.11a, 802.11b,802.11g, 802.11n and 802.11ac WIFI and bluetooth.
A PCB chip sntenna is available on board by default.
3.7
USB interfaces
There are total 4 USB ports on the EDB board. Three type A USB3.0 host ports at J3 and J4 and J5,
one micro USB slave port at J9 as UART debug port.
Port3 of J5 can be used as OTG port, which is directly connected to BM1880 USB2.0 port.
