I2C Interfaces; Pcm Interface - Quectel EC200U Series Hardware Design

SPI_MOSI
SPI_MISO
SPI_CLK

3.12. I2C Interfaces

The module provides two I2C interfaces.
Table 19: Pin Definition of I2C Interfaces
Pin Name Pin No.
I2C_SCL 41
I2C_SDA 42
I2C2_SCL 141
I2C2_SDA 142
NOTE
The I2C bus supports simultaneous connection of multiple peripherals except for codec IC. In other
words, if a codec IC has been mounted on the I2C bus, no other peripherals can be mounted. If there is
no codec IC on the bus, multiple peripherals can be mounted.

3.13. PCM Interface

The module provides one PCM interface which only supports slave mode.
Table 20: Pin Definition of PCM Interface
Pin Name Pin No.
PCM_DIN 24
EC200U_Series_Hardware_Design
38 DO
39 DI
40 DO
I/O Description
OD I2C serial clock
OD I2C serial data
OD I2C serial clock
OD I2C serial data
I/O Description
DI PCM data input
LTE Standard Module Series
SPI master mode
output
SPI master mode input
SPI clock
Comment
Require external pull-up to 1.8 V
if used.
If unused, keep it open.
Comment
1.8 V power domain.
If unused, keep it open.
that supports GNSS
function, the SPI function of
–
Pin 37 40 cannot be used
and needs to be left
unconnected.
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