User's Manual

[Unex] - Ver. 1.13- 20170307 spec. P. 8

*a : VCC require steady DC from 6~40V range. No automotive load dump protection circuit on this module.

*b : This pin is a internally connection to VCC (pin2 & pin4) for the control of whole module power system ON or

OFF state. Either ﬂoat this pin or follow suggested ckt. below to power ON/OFF module through external

system GPIO.

FUNCTION Signal Pin

Number

Signal FUNCTION

Default for HSM(Inﬁneon's

SLE97xx)

GPIO26/SPI2_SCLK 40 39 UART_0_TXD Console

GPIO27/SPI2_Frame 42 41 UART_0_RXD

GPIO25/SPI2_TXD 44 43 UART_1_TXD To GNSS module(Telit's SL869)

GPIO24/SPI2_RXD 46 45 UART_1_RXD

GPIO22/I2S_DATA GPIO22/I2S_DATA 48 47 GPS_ON_GPIO16 default: GPIO to turn on/off GNSS

module

GPIO1 GPIO1 50 49 GPIO21/I2S_WCLK CPIO21/I2S_WCLK