Pcm And I2C Interfaces - Quectel LTE-A Series Hardware Design

MCU/ARM
TXD
RXD
RTS
CTS
GPIO
EINT
GPIO
GND
NOTES
1. The transistor circuit solution is not suitable for applications with high baud rates exceeding 460 kbps.
2. Please note that the module MAIN_CTS and MAIN_RTS are connected respectively to the host CTS
and RTS.

3.12. PCM and I2C Interfaces

EG060V-EA supports audio communication via Pulse Code Modulation (PCM) digital interface and I2C
interface.
The PCM interface supports the following mode:
⚫
Primary mode (short frame synchronization): the module works as both master and slave.
In the primary mode, the data is sampled on the falling edge of the PCM_CLK and transmitted on the
rising edge. The PCM_SYNC falling edge represents the MSB. In this mode, the PCM interface supports
256 kHz, 512 kHz, 1024 kHz or 2048 kHz PCM_CLK at 8 kHz PCM_SYNC, and also supports 4096 kHz
PCM_CLK at 16 kHz PCM_SYNC.
EG060V-EA_Hardware_Design
4.7K
VDD_EXT
1 nF
1 nF
10K
VCC_MCU
4.7K
Figure 22: Reference Design of Transistor Circuit
EG060V-EA Hardware Design
VDD_EXT
10K
MAIN_RXD
MAIN_TXD
VDD_EXT
MAIN_RTS
MAIN_CTS
MAIN_DTR
MAIN_RI
MAIN_DCD
GND
LTE-A Module Series
Module
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