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
