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Enfora Enabler IIIG M2M
Modem Integration Guide
6.6.6. General Purpose Input/Output Interface
GPIO number
Pin number
Secondary
Function
GPIO 1
64
GPIO 2
62
GPIO 3
60
GPIO 4
58
GPIO 5
68
GPIO 6
70
GPIO 7
66
GPIO 8
72
GPIO 9
14
MCSI_CLK
GPIO 10
16
MCSI_FSYNC
GPIO 11
18
MCSI_TX
GPIO 12
12
MCSI_RX
GPIO 13
30
GPIO 14
26
GPIO 15
22
GPIO 16
24
GPIO 17
28
GPIO 18
20
GPIO 19
34
GPIO 20
32
Each general-purpose signal may be selected as inputs or outputs. The GPIOs can be used
independently as a user-specified function, or may be used to provide modem control and status signals.
Several examples of modem control signals are: power shutdown command, register/deregister on
network command, and transmitter disable. Several examples of modem status signals are: registration
status and ready-for-power-down status to be used with power shutdown command signal.
I/O Lines
Parameter/Conditions
Min
Typ
Max
Units
V
IL
Input Voltage – Low
0
0.60
Vdc
V
IH
Input Voltage – High
1.11
1.8
Vdc
V
OL
Output Voltage – Low
0.45
Vdc
V
OH
Output Voltage – High
1.26
Vdc
I
OL
/ I
OH
Rated Output Current
4
mA
GSM0308IG002
43
Version 1.05 – 11/13/08