Terminal Function - Kenwood NX-411 Service Manual

NX-411
Display unit (X54-3770-10)
Pin No. Name I/O
1 /CS O
2 /RES O
3 A0 O
4 /WR O
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
14 VSS -
15 VDD O
16 V1 -
17 V2 -
18 V3 -
19 V4 -
20 V5 O
1 GND -
2 GND -
3 NC -
4 /LCDRST I
5 VLCDLED I
6 /WR I
7 VLCDLED I
8 A0 I
9 33M I
10 33M I
11 NC -
12 D0 I/O Data bus 0
13 NC -
14 D1 I/O Data bus 1
15 NC -
D2 I/O Data bus 2
16
17 NC -
18 D3 I/O Data bus 3
19 NC -
20 D4 I/O Data bus 4
21 NC -
22 D5 I/O Data bus 5
23 NC -
56

TERMINAL FUNCTION

Function
CN3
Chip select output
LCD reset output
Address bus 0 output
WR bus output
3.3V LCD power supply output
GND
3.3V LCD power supply output
LCD drive power supply
LCD drive power supply
LCD drive power supply
LCD drive power supply
LCD drive power supply
CN8
GND
GND
No connection
LCD reset input
6key backlight voltage (SB2)
WR bus input
6key backlight voltage (SB2)
Address bus 0 input
3.3V input
3.3V input
No connection
No connection
No connection
No connection
No connection
No connection
No connection
Pin No. Name I/O
24 D6 I/O Data bus 6
25 NC - No connection
26 D7 I/O Data bus 7
27 NC - No connection
28 LCDCNT I LCD contrast input
29 KEYO1 I Key matrix input (Ko1)
30 KEYO0 I Key matrix input (Ko0)
31 KEYO3 I Key matrix input (Ko3)
32 KEYO2 I Key matrix input (Ko2)
33 /KEYI1 O Key matrix output (Ki1)
34 /KEYI0 O Key matrix output (Ki0)
35 /KEYI3 O Key matrix output (Ki3)
36 /KEYI2 O Key matrix output (Ki2)
37 NC - No connection
38 KEYI4 O Key matrix output (Ki4)
39 VKEY I 12key backlight voltage (SB2)
40 VKEY I 12key backlight voltage (SB2)
41 NC - No connection
42 NC - No connection
43 5A I 5V input
44 5A I 5V input
45 NC - No connection
46 INTMIC O Internal MIC output
47 NC - No connection
48 ME - Internal MIC GND
49 GND - GND
50 GND - GND
TX-RX unit (X57-8120-10 A/2)
Pin No. Name I/O
CN4
1 NC - No connection
2 RXD I Serial data input
3 TXD O Serial data output
4 5V O 5V output
5 E - GND
6 OPT I/O Option interface I/O
7 PF I Programmable function key input
8 PTT I External PTT input
9 ME - External MIC GND
10 EMC I External MIC input
11 MSW I EXT/INT MIC switch input
12 SP- O BTL output – for external speaker
13 SP+ O BTL output + for external speaker
14 SSW I EXT/INT speaker switch input
Function
Function