Quectel BG95 - 4.10. PCM and I2 C Interfaces

LPWA Module Series
BG95&BG96 Compatible Design
BG95&BG96_Compatible_Design 34 / 47
For more details about the USB interfaces of BG95/BG96, please refer to document [1] and [2].
1. BG95/BG96 can only be used as a slave device.
2. BG95 USB interface is used for AT command communication, data transmission, software
debugging and firmware upgrade. However, in practical applications, the constant use of USB will
result in increased power consumption. Therefore, in power-sensitive applications, it is
recommended that USB is used for firmware upgrade only.
4.10. PCM and I2C Interfaces
BG95/BG96 provides one PCM digital interface and one I2C interface. A reference design of PCM and
I2C interfaces with an external codec IC is shown below.
PCM_DIN
PCM_SYNC
PCM_CLK
I2C_SCL
I2C_SDA
Module
1.8V
4.7K 4.7K
BCLK
WCLK
ADC
SCL
SDA
BIAS
MICBIAS
INP
INN
LOUTP
LOUTN
Codec
PCM_DOUT
DAC
Figure 19: Reference Design of PCM Application with Audio Codec (BG95/BG96)
For more details about the PCM and I2C interfaces of BG95/BG96, please refer to document [1] and [2].

PCM and I2C interface functions of BG95 are under development.
NOTE
NOTES