Line-Interface Board Application - Tait TM8100 mobiles Service Manual

Table 17.8 External options connector (SK1) — pins and signals
front view
17.6

Line-Interface Board Application

Figure 17.3 Two radios connected as a repeater/crossband link
18
IOP_TXD
17
IOP_RXD
9
IOP_GPIO1
PTT FROM OPT
15
IOP_GPIO2
2° BUSY
11
IOP_GPIO3
12
IOP_GPIO4
13
IOP_GPIO5 GPIO5
4
IOP_GPIO6
10
IOP_GPIO7
7
RX_AUD
1
13V8_SW
5
RX_BEEP_IN
6
AUD_TAP_IN AUD_TAP_IN
2
AUD_TAP_OUT AUD_TAP_OUT
14
AUX_MIC_AUD
8
RSSI
3
AGND AGND
16
DGND
DGND
478 TMAA01-01 Line-Interface Board
Pin Signal
1 KEYING
2 RS-422
11 RS-422/RS-232
3 PTT-IN
4 4W_LINE_IN -
10 4W_LINE_IN +
5 RS-422/RS-232
6 RS-422
7 GND
8 —
9 13V8 FROM RADIO switched 13.8V supply from the radio
12 BUSY/GATE
13 —
14 4W_LINE_OUT -
15 4W_LINE_OUT +
The following diagram shows the control of two radios operated together,
crossband or repeater linked.
line-interface board
SK2 SK1
11
RS-422/RS-232 TX
18
TXD
2 RS-422 TX
17
RXD
5
RS-422/RS-232 RX
9
RS-422 RX
6
10
11 1 KEYING
BUSY
keying
PTT_IN
12 3
AUX
logic
12
BUSY/GATE
—
—
13V8_SW
9
—
1
13V8
10 LINE IN+
—
6
2
4 LINE IN-
15 LINE OUT+
—
—
14
LINE OUT-
3
5
AGND
16
6
internal external
options options
connector connector
Description
signal line keying
serial data TX-
serial data TX+/RS-232 TXD
bi-directional keying input
4-wire line in negative
4-wire line in positive
serial data RX+/RS-232 RXD
serial data RX-
ground
not connected
busy or receiver gate output. 5V CMOS logic level.
not connected
4-wire line out negative or 2-wire line in/out negative
4-wire line out positive or 2-wire line in/out positive
line-interface board
SK1
11
11 11 RS-422/RS-232 TX
2 2 RS-422 TX 2
5
RS-422/RS-232 RX
RS-422 RX
6
1 1 KEYING 1
keying
PTT_IN
3 3 3
logic
BUSY/GATE
12 12 12
13V8_SW
9 9 9
10 10 LINE IN+ 10
4 4 LINE IN- 4
15 15 LINE OUT+ 15
LINE OUT- 14
14 14
5
5 5 AGND
6 6 6
external
options
connector
© Tait Electronics Limited November 2007
SK2
18 18
TXD IOP_TXD
17 17
IOP_RXD
RXD
9 9
PTT FROM OPT IOP_GPIO1
10 15
IOP_GPIO2
2° BUSY
11 11
BUSY IOP_GPIO3
12 12
AUX IOP_GPIO4
13
IOP_GPIO5
GPIO5
4
— IOP_GPIO6
10
—
IOP_GPIO7
7
— RX_AUD
1 1
13V8_SW
13V8
5
— RX_BEEP_IN
6 6
AUD_TAP_IN AUD_TAP_IN
2 2
AUD_TAP_OUT AUD_TAP_OUT
14
— AUX_MIC_AUD
8
—
RSSI
3 3
AGND AGND
16 16
DGND
DGND
internal
options
connector
TM8100/TM8200 Service Manual