User Manual

Copyright ⓒ. 2014. All Rights Reserved.
3. Interface
3.5 Audio
This module is provided with PCM interface. The resistor of pulled-up or
pulled-down in this pin must be over 50Kohm.
Pin No. Signal Name Direction Function
37 UART_RXD I UART RX DATA
39 UART_TXD O UART TX DATA
7 UART_RFR O UART ready-for-receive
8 UART_CTS I UART clear-to-send
Table 4. PCM Pin descriptions
3.6 User interface
Pin No. Signal Name Direction Function
11 BOOT_OK O
Modem booting end
/ Modem Wake Up
12 MSG O
Received emergency message
from center
27 96H_END O
Signified in 96 hours standby
mode ending
28 RESET_IN- I Modem Hardware reset input
30 ACC_ON_SLEEP I
Modem Power ON
/ Modem Power Sleep
Table 5. User interface Pin descriptions