Kenwood NX-820 Service Manual page 92

NX-820
8pin Modular Connector Specifi cation
Pin Pin Signal
I/O
No. Name
1 MBL O Digital
2 SB O Power
3 GND -
PTT I Digital
4
TXD O Digital
5 ME -
6 MIC I Analog Audio input
HOOK/
7 I Digital
RXD
I Digital
8 DM
O Digital
15pin D-sub Connector Specifi cation
Pin Pin Signal
I/O
No. Name
SB
1 - Power
2 IGN I Digital
3 SP2/PA O Analog Speaker output
92
TERMINAL FUNCTION
Description/port type
Type
CMOS output
Switched B output
GND Ground
CMOS input
(Pull Up: 5.0V/10k)
CMOS 3-State Buffer
output
(Pull Up: 5.0V/10k)
GND MIC Ground
DTC144EE input
(Pull Up: 5.0V/4.7k)
CMOS input/output
(Pull Up: 5.0V/47k)
Description
Type
Switched B output
Ignition sense input
Item and Condition Min
VOH 4.2
VOL -
This parameter depends on Bat-
Output Voltage
tery voltage.
Output Current
Allowable current value
VIH 4.2
VIL 0
VOH 4.2
VOL -
Baud rate -
This is ground port for Micro-
MIC Ground
phone.
Output Amplitude
-
(1kHz, 60% deviation)
Coupling Capacitor -
Input impedance -
Allowable Frequency 300
VIH 4.2
VIL 0
Baud rate -
VIH 4.2
VIL 0
VOL -
Item and Condition Min
This parameter depends on Bat-
Voltage
tery voltage.
Supply Current -
(with KCT-60) -
Input Voltage 10.8
Audio output 3
Coupling Capacitor -
RL 4
Allowable Frequency 300
Typ Max Unit
5.2 V
0.8 V
200 mA
200 mA
5.0 V
0.8 V
5.2 V
0.8 V
19200 bps
5 - mVrms
10 - uF

600 -
3000 Hz
5.0 V
0.8 V
115200 bps
5.0 V
0.8 V
0.8 V
Typ Max Unit Note
- 2.0 A
- 0.5 A
- 16 V
at 4, 10% Distor-
4 - W
tion
330 - uF

- -
- 3000 Hz
Note