Kenwood NX-3720HG Service Manual page 26

Pin No. Name I/O
8 BLC/D+ I/O Back light control signal / USB PHY
data plus
1 GND - Ground
2 S8 I Switch 8
3 S9 I Switch 9
4 S10 I Switch 10
5 S7 I Switch 7
6 S6 I Switch 6
7 S5 I Switch 5
8 S4 I Switch 4
9 S1 I Switch 1
10 S2 I Switch 2
11 S3 I Switch 3
12 /PSW I Detection signal input of power
switch
1 ESD - Ground
2 A0 O LCD driver data/command switch
signal
3 /WR O LCD driver WR signal
4 D0 O LCD driver data output
5 D1 O LCD driver data output
6 D2 O LCD driver data output
7 D3 O LCD driver data output
8 D4 O LCD driver data output
9 D5 O LCD driver data output
10 D6 O LCD driver data output
11 D7 O LCD driver data output
12 /RD O LCD driver RD signal
13 RSTB O LCD driver reset signal
14 CSB O LCD driver chip-serect signal
15 VDDI O 1.8V output
16 VD1 - LCD Driver Internal power supply
17 VSS - Ground
18 VDD O 3.2V output
19 VM - VM is the non-select voltage level of
COM-drivers
20 V0 - V0 is the LCD driving voltage for
common circuits at positive frame
21 XV0 - XV0 is the LCD driving voltage for
common circuits at negative frame
22 VG - VG is the LCD driving voltage for
segment circuits
23 ESD - Ground
1 SP+ O Speaker output
2 SPG - Speaker ground
1-26 (No.RA054<Rev.001>)
Function
CN3
CN6
CN5
Pin No. Name I/O
1 GND - Ground
2 R_SET0 O Radio setting signal 0
3 R_SET1 O Radio setting signal 1
4 R_SET2 O Radio setting signal 2
5 GND - Ground
6 A23 I LCD driver data/command switch
signal
7 /WR I LCD driver WR signal
8 D[0] I LCD driver data input
9 D[1] I LCD driver data input
10 D[2] I LCD driver data input
11 D[3] I LCD driver data input
12 D[4] I LCD driver data input
13 D[5] I LCD driver data input
14 D[6] I LCD driver data input
15 D[7] I LCD driver data input
16 /RD I LCD driver RD signal
17 LCDRST I LCD driver reset signal
18 /CS I LCD driver chip-serect signal
19 P_TEMP O Temperature detection signal
20 /KEYINT O Key state change signal
21 I2CCK I I2C serial clock
22 I2CDT I/O I2C serial data
23 GND - Ground
24 RXD O Serial data output
25 TXD I Serial data input
26 /PSW O Detection signal input of power
switch
27 DM I/O MIC data detection
28 /PTT O PTT input
29 ME - MIC ground
30 MIC/VBUS O MIC signal input / USB VBUS
Detection
31 NC - No connection
32 GND - Ground
33 USB_D- I/O USB0 PHY data minus
34 GND - Ground
35 USB_D+ I/O USB0 PHY data plus
36 GND - Ground
37 NC - No connection
38 18M I 1.8V input
39 NC - No connection
40 32M I 3.2V input
41 NC - No connection
42 54M I 5.4V input
43 NC - No connection
Function
CN7