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Enfora Enabler III-G
Modem Integration Guide
6.3.3.
I/O Connector Pin Assignments
The following table shows the pin assignments for the input/output connector.
Table 2 - Enabler III-G Pin Assignments
PIN
#
FUNCTION
Serial
Pin
I/O
ENABLER III-G
Description/Comments (Default function / secondary function)
1
Power Input (USB)
P
VBUS
USB power
2
Ground
R
GND
System Ground
3
Power Input (USB)
P
VBUS
USB power
4
Ground
R
GND
System Ground
5
I/O
USB_DP/RXD/MIC_R
5 V tolerant data plus pin in USB modes /
Receive function in UART mode /
Microphone or right speaker in AUDIO mode
6
I
LED_B
LED B sink
7
I/O
USB_DM/TXD/SPKR_L
5 V tolerant data minus pin in USB modes /
Transmit function in UART mode /
Monaural speaker or left speaker in AUDIO mode
8
I
LED_A
LED A sink
9
I
ID_USB
USB connector identification
10
O
VRWLED
Output voltage for VRWLED regulator
11
Clear To Send
8
I
UART_CTS
UART Clear to send
[MG1]
12
I
MCSI_RX/GPIO12
GPIO12 / MCSI Serial data input
13
Request To Send
7
O
UART_RTS
UART Request to send
14
I/O
MCSI_CLK/GPIO9
GPIO9 / MCSI Serial Clock I/O
15
Serial Data Transmit
2
O
UART_TX
UART Serial data output
16
I/O
MCSI_FSYNC/GPIO10
GPIO10 / MCSI Frame Synchronization I/O
17
Data Set Ready
6
I
DSR_RXIR
UART Data set ready/ IrDA Serial data input
18
O
MCSI_TX / GPIO11
GPIO11 / MCSI Serial Data Output
19
Data Carrier Detect
1
O
DCD_TXIR
UART Data carrier detect/IrDA Serial data output
20
O
SPI_\CS2 / GPIO18
GPIO18 / SPI Chip select 2
21
Serial Data Receive
3
I
UART_RX
UART Serial data input
22
I/O
SPI_MOSI / GPIO15
GPIO15 / SPI Data master out/slave in
23
Ring Indicate
9
O
UART_RING
UART/Modem ring indicate
24
O
SPI_\CS0/GPIO16
GPIO16 / SPI Chip select 0
25
Data Terminal Ready
4
O
UART_DTR
UART Data Terminal Ready
26
I/O
SPI_MISO/GPIO14
GPIO14 / SPI Data master in/slave out
27
O
KBC0/GPO25
Keyboard Matrix Column 0 / GPIO25
28
O
SPI_\CS1/GPIO17
GPIO17 / SPI Chip select 1
29
O
KBC2/GPO27
Keyboard Matrix Column 2 / GPIO27
30
I/O
SPI_CLK/GPIO13
GPIO13 / SPI serial clock
31
O
KBC3/GPO28
Keyboard Matrix Column 3 / GPIO28
32
O
KBC4/GPIO20
Keyboard Matrix Column 4 / GPIO20
33
O
KBC1/GPO26
Keyboard Matrix Column 1 / GPIO26
34
I
KBR4/GPIO19
Keyboard Matrix Row 4 / GPIO19
35
I
PWR_CTL
External switch-on event (ON Button) with 32-kHz de-
bouncing
36
I
KBR3/GPI24
Keyboard Matrix Row 3 / GPI24
37
I
RESERVED
RESERVED
38
I
KBR0/GPI21
Keyboard Matrix Row 0 / GPI21
39
(OPEN)
40
I
KBR1/GPI22
Keyboard Matrix Row 1 / GPI22
41
(OPEN)
42
I
KBR2/GPI23
Keyboard Matrix Row 2 / GPI23
43
(OPEN)
44
(OPEN)
45
(OPEN)
46
(OPEN)
47
I
HST_DET
Headset Detect
48
O
I2C_2_SCL
I
2
C interface Master serial clock
49
I
FML
Mixer/FM radio input left channel
GSM0308PB001
28
Version DRAFT – 2/9/2007