User's Manual

SHANGHAI SIMCOM LIMITED

Signal Pin# Description

Direction

GPIO_4 26 SPI1 MOSI O

GPIO_5 27 SPI1 MISO I

GPIO_6 24 SPI1 CS_N O

GPIO_7 25 SPI1 CLK O

GPIO_20 38 SPI2 MOSI O

GPIO_21 39 SPI2 MISO I

GPIO_111 28 SPI2 CS_N O

GPIO_112 29 SPI2 CLK O

GPIO_0 49 SPI3 MOSI O

GPIO_1 50 SPI3 MISO I

GPIO_2 51 SPI3 CS_N O

GPIO_3 52 SPI3 CLK O

4.13 Other interface

4.13.1 Camera flash Signal

These camera flash signal provide flash and torch mode enable. The FLASH_NOW trigger the

camera flash into torch mode. The FLASH_EN enable the camera flash to flash mode.

4.13.2 PM_VIB_DRV_N Signal

The PM_VIB_DRV_N is used to control vibration intensity. The vibration driver is a

programmable voltage output that is referenced to VDD; when off, its output voltage is VDD. The

motor is connected between VDD and the PM_VIB_DRV_N pin.

See Table4-15

Table4-15 PM_VIB_DRV_N Signal

Signal Pin# Description

Direction

PM_VIB_DRV_N 77 Vibration motor driver output control PO

4.13.3 VCOIN Signal

VCOIN requires either a lithium manganese dioxide rechargeable coin cell or a keep-alive

capacitor, so that the appropriate oscillator and real-time clock circuits continue to run when the

phone is off.

See Table4-16

Table4-16 VCOIN Signal

Signal Pin# Description

Direction