Terminal Function - Kenwood NX-200 Service Manual

Control unit (X53-4590-XX)
Pin No. Name I/O
1 /CS O Chip select output
2 /RES O LCD reset output
3 A0 O Address bus 0 output
4 /WR O WR bus output
5 D0 I/O Data bus 0
6 D1 I/O Data bus 1
7 D2 I/O Data bus 2
8 D3 I/O Data bus 3
9 D4 I/O Data bus 4
10 D5 I/O Data bus 5
11 D6 I/O Data bus 6
12 D7 I/O Data bus 7
13 VDD O 3.3V LCD power supply output
14 VSS - GND
15 VDD O 3.3V LCD power supply output
16 V1 - LCD drive power supply
17 V2 - LCD drive power supply
18 V3 - LCD drive power supply
19 V4 - LCD drive power supply
20 V5 O LCD drive power supply
CN23
1 ME - Internal MIC GND
2 EMC I Internal MIC input
3 SP+ O BTL output + for internal speaker
4 SP+ O BTL output + for internal speaker
5 SP- O BTL output – for internal speaker
6 SP- O BTL output – for internal speaker
7 6_/KEYI1 I Key matrix input (KEYI1 for 6-key)
8 6_/KEYO2 O Key matrix output (KEYO2 for 6-key)
9 BL_SB O LCD backlight voltage output
10 6_/KEYO0 O Key matrix output (KEYO0 for 6-key)
11 6_/KEYO1 O Key matrix output (KEYO1 for 6-key)
12 BL_SB O LCD backlight voltage output
13 6_/KEYI0 I Key matrix input (KEYI0 for 6-key)
14 AGND - GND
CN403
1 33A O 3.3V for volume level
2 VOL_GND - GND for volume level
3 VOL I Volume level input for audio control
4 EN3 I Rotary switch input
5 AGND - GND
6 EN4 I Rotary switch input
7 EN1 I Rotary switch input
8 EN2 I Rotary switch input

TERMINAL FUNCTION

Function
CN1
Pin No. Name I/O
Power output after passing through the
9 +B O
fuse
10 SB1 I Power input after power switch
CN404
1 LED_G O Green LED control output
2 /EMG I Emergency (Orange) key input
3 LED_R O Red LED control output
4 IFC I TX-RX PCB version recognition input
5 /SAVE O 50C Reg. control output
6 I2CCK O TCXO thermometer clock output
7 /5TC O 50T Reg. switch control output
8 I2CSDA I/O TCXO thermometer data input/output
9 SBC O SB3 switch control output
10 /T_R O TX/RX control output
11 TV2 O RX tuning voltage 2 output
12 ASSIST O VCO tuning voltage output
13 TV1 O RX tuning voltage 1 output
14 VAGC I AGC voltage input
15 5RC O 50R switch control output
TCXO_
16 O TCXO modulation output
MOD
17 PGND - GND
18 RSSI I RSSI voltage input
19 PGND - GND
20 CV I CV voltage input
21 AGND - GND
22 NC - No connection
23 NC - No connection
24 +B I Power input after passing through the fuse
25 +B I Power input after passing through the fuse
26 +B I Power input after passing through the fuse
27 +B I Power input after passing through the fuse
28 NC - No connection
29 NC - No connection
30 AGND - GND
31 /PTT I PTT input
32 Side_G O Key matrix output (SIDE1,2 key)
33 Side_1 I Key matrix input (SIDE1 key)
34 W_/N O W/N control output
35 SDO1 O PLL serial data output
36 Side_2 I Key matrix input (SIDE2 key)
37 /PCS_RF O PLL enable output
APC voltage discharge switch control
38 /DSW O
output
39 APC O APC control voltage output
40 /APCSW O APC switch control output
41 VCO_MOD O VCO modulation output
NX-200(G)
Function
61