Other Interface; Camera Flash Signal; Pm_Vib_Drv_N Signal; Vcoin Signal - SimCom SIMT 1502 Manual

SHANGHAI SIMCOM LIMITED
Signal Pin#
GPIO_4 26
GPIO_5 27
GPIO_6 24
GPIO_7 25
GPIO_20 38
GPIO_21 39
GPIO_111 28
GPIO_112 29
GPIO_0 49
GPIO_1 50
GPIO_2 51
GPIO_3 52

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#
PM_VIB_DRV_N 77

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
SPI1 MOSI
SPI1 MISO
SPI1 CS_N
SPI1 CLK
SPI2 MOSI
SPI2 MISO
SPI2 CS_N
SPI2 CLK
SPI3 MOSI
SPI3 MISO
SPI3 CS_N
SPI3 CLK
Description
Vibration motor driver output control
Description
Direction
I/O
O
I
O
O
O
I
O
O
O
I
O
O
Direction
I/O
PO
Direction
I/O
29