Motorola TETRA MTH800 - Mode Select (Option1 and Option2; Accessory Connector Pin-Outs

B - 2 MTH800 TETRA Handportable Terminal / Basic Service Manual CONNECTOR PIN FUNCTIONS
Mode Select (Option1 and Option2):
The following logic levels can be used to select the requested CE Bus mode:
Accessory Connector Pin-Outs
Note: For additional information refer to the detailed service manual chapter: Theory of Operation.
MODE OPTION_1 OPTION_2 USB_PWR AUDIO_IN
NORMAL (no accessory) 1 1 0 X
USB Accessory/Computer 1 1 >4.0V 1
USB accessory / RS232 (6 wire) 1 1 >4.0V 0
Dumb Accessory 1 0 X 1
USB OTG 1 0 X 0
RS-232 (8 wire)/IDB Smart Cable 0 1 X 1
Bluetooth (RS-232 (4 wire) / SSI) 0 1 X 0
PTT 0 0 X X
SB9600
Diode connected from Option 2 to 1
XX
Pin No. Signal Name (Short Form)
Power/
Default
States USB
USB
OTG
Bluetoot
h (RS232/
SSI)
RS232
(8 wire)
USB/
RS232
(6 wire) JTAG
1 Power Ground (GND) GND GND GND GND GND GND GND
2 Battery Feedback (BATT_FDBK) BATT_
FDBK
BATT_
FDBK
BATT_
FDBK
BATT_
FDBK
BATT_
FDBK
RTS BATT_
FDBK
3 External Power (EXTB+) EXTB+ EXTB+ EXTB+ EXTB+ EXTB+ EXTB+ EXTB+
4 USB+/TXD (D+) D+ D+ TXD TXD D+ TDO
5 USB-/RXD (D-) D- D- RXD RXD D- TDI
6 USB Power/Ignition/Send/End /
RTS (USB_PWR)
USB_
PWR
USB_
PWR
RTS RTS USB_
PWR
RESET_
IN
7 Switched Battery (SWB+) SWB+ SWB+ SWB+ SWB+ SWB+ SWB+ SWB+
8 Hook Switch / FM_DATA / CTS
(HKSW)
HKSW CTS CTS CTS Mcu
_DE
9 MUTE/FS/DCD (MUTE) FS DCD DCD Dsp
_DE
10 DUMB_SEL2/SCK/RI (DSEL2) DSCEN DSCEN SCK RI TXD TCK
11 DUMB_SEL1 / FM_CLOCK
/SRDA / DTR (DSEL1)
CABLE_
ID
SRDA DTR DTR TMS
12 DUMB_SEL0 / FM_EN / STDA/
DSR (DSEL0)
DONGLE STDA DSR RXD TRST
13 Option 1 (OPT1) UPLink UPLink OPT1 OPT1 OPT1 OPT1
14 Option 2 (OPT2) DNLink DNLink OPT2 OPT2 OPT2 OPT2
15 Audio Out On/Off (AUDIO_OUT) AUDIO_
OUT
AUDIO_
OUT
AUDIO_
OUT
AUDIO_
OUT
AUDIO_
OUT
AUDIO_
OUT
AUDIO_
OUT
16 Audio In (AUDIO_IN) AUDIO_
IN
AUDIO_
IN
AUDIO_
IN
AUDIO_
IN
AUDIO_
IN
AUDIO_
IN
AUDIO_
IN
17 Audio Ground (AUDIO_GND) AUDIO_
GND
AUDIO_
GND
AUDIO_
GND
AUDIO_
GND
AUDIO_
GND
AUDIO_
GND
AUDIO_
GND