Interface Specification - Tait TM8100 mobiles Service Manual

17.5

Interface Specification

Table 17.7 Internal options connector (SK2) — pins and signals
Pin
1 13V8_SW
2 AUD_TAP_OUT
1*
1&
1^
1%
1$ 3 AGND
1#
1@
1!
4 AUX_MIC_AUD
1)
J
5 RX_BEEP_IN
I
H
G
F 6 AUD_TAP_IN
E
D
C
B
7 RX_AUD
8 RSSI
top view
9 IOP_GPIO1
10 IOP_GPIO2
11 IOP_GPIO3
12 IOP_GPIO4
13 IOP_GPIO5
14 IOP_GPIO6
15 IOP_GPIO7
DGND
16
IOP_RXD
17
IOP_TXD
18
TM8100/TM8200 Service Manual
© Tait Electronics Limited November 2007
The following tables summarize the signals used for the line-interface board
on the internal options connector (SK2 on the line-interface board) and the
external options connector (SK1 on the line-interface board).
Line-Interface
Radio Signal
Signal
13V8 FROM RADIO switched 13V8 supply from the radio
AUDIO TAP OUT
AGND
—
—
AUD_TAP_IN
—
—
PTT FROM OPT
SECONDARY BUSY IOP_GPIO2 from the radio
BUSY
AUX
GPIO5
—
—
AGND
RXD
TXD
Description
Programmable tap point out of the receive or
transmit audio chain.
analogue ground
not connected
not connected
Programmable tap point into the receive or
transmit audio chain.
not connected
not connected
IOP_GPIO1 from the radio
3V3 logic level, 5V tolerant
3V3 logic level, 5V tolerant
IOP_GPIO3 from the radio
3V3 logic level, 5V tolerant
IOP_GPIO4 from the radio
3V3 logic level, 5V tolerant
IOP_GPIO5 from the radio
3V3 logic level, 5V tolerant
not connected
not connected
analogue ground
asynchronous serial port - receive data
asynchronous serial port - transmit data
TMAA01-01 Line-Interface Board 477