Quectel BG96 Mini PCIe Hardware Design page 23

design.
Table 8: Pin Definition of PCM and I2C Interfaces
Pin No. Pin Name
45 PCM_CLK
47 PCM_DOUT
49 PCM_DIN
51 PCM_SYNC
30 I2C_SCL
32 I2C_SDA
NOTES
1)
1. The digital audio (PCM) function is only supported on Telematics version. This function is under
development.
2. * means under development.
The following figure shows a reference design of PCM interface with an external codec IC.
PCM_CLK
PCM_SYNC
PCM_DOUT
PCM_DIN
I2C_SCL
I2C_SDA
Module
Figure 7: Reference Circuit of PCM Application with Audio Codec
BG96_Mini_PCIe_Hardware_Design
I/O Power Domain
1)
IO 1.8V
1)
DO 1.8V
1)
DI 1.8V
1)
IO 1.8V
DO 1.8V
IO 1.8V
1.8V
BG96 Mini PCIe Hardware Design
Description
PCM clock signal
PCM data output
PCM data input
PCM frame synchronization
I2C serial clock.
Require external pull-up to 1.8V.
I2C serial data.
Require external pull-up to 1.8V.
MIC_BIAS
BCLK
FS
MIC+
MIC-
DACIN
ADCOUT
SPKOUT+
SCLK
SDIN
SPKOUT-
Codec
LTE Module Series
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