Application Interfaces; General Description - Quectel EG91 Series Hardware Design

3

Application Interfaces

3.1. General Description

EG91 is equipped with 62-pin 1.1mm pitch SMT pads plus 44-pin ground/reserved pads that can be
connected to customers' cellular application platforms. Sub-interfaces included in these pads are
described in detail in the following chapters:

Power supply

(U)SIM interfaces

USB interface

UART interfaces

PCM and I2C interfaces

SPI interface

Status indication

USB_BOOT interface
EG91_Hardware_Design
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EG91 Hardware Design
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