User's Manual

ALX420X User Manual
Alinket Proprietary & Confidential Information
E-mail: [e-mail] Website: http://www.alinket.com
9
9
1.2.3 Pin Descriptions
Pin#
Type
Name
(Main function)
Description
PIN connection
(when not using)
1
S
GND
Ground reference
2
S
BAT_IN
Battery Input(3.3V)
3
S
VDDIO
4
I/O
SPI_SCK
floating
5
I/O
DEV_WAKE
Wake up from Sleep mode
floating
6
I/O
SPI_MISO
floating
7
I/O
SPI_MOSI
Can be used as PUART_RX
floating
8
I/O
SPI_CS
Can be used as PUART_TX
floating
9
I/O
I2C_SCL
Can be used as I2S_DO
floating
10
I/O
I2C_SDA
Can be used as I2s_DI
floating
11
I/O
UART_CTS_N
Indication pin or UART CTS(input)
floating
12
I/O
GPIO_7
floating
13
I/O
UART_RTS_N
Indication pin or UART RTS(output)
floating
14
S
GND
Ground reference
15
S
GND
Ground reference
16
S
GND
Ground reference
17
I
RST_N
Active-low reset input
floating
18
I/O
UART_RXD
UART receive data
floating
19
I/O
UART_TXD
UART transmit data
floating
20
I/O
SPI2_MISO
floating
21
I/O
SPI2_MOSI
floating
22
I/O
SPI2_CLK
floating
23
I/O
GPIO5
floating
24
I/O
I2S_WS
floating
25
I/O
I2S_CLK
floating
26
I/O
PWM0
Can be used as GPIO_6
floating
27
S
GND
Ground reference
floating
Table 1 - Pin Descriptions