Kenwood NX-3720HG Service Manual page 25

Pin No. Name I/O
32 ME - MIC ground
33 /PTT I PTT input
34 DM I/O MIC data detection
35 /PSW I Detection signal input of power
36 TXD O Serial data output
37 RXD I Serial data input
38 GND - Ground
39 I2CDT I/O I2C serial data
40 I2CCK O I2C serial clock
41 /KEYINT I Key state change signal
42 P_TEMP I Temperature detection signal
43 /CS O LCD driver chip-serect signal
44 LCDRST O LCD driver reset signal
45 /RD O LCD driver RD signal
46 D[7] O LCD driver data output
47 D[6] O LCD driver data output
48 D[5] O LCD driver data output
49 D[4] O LCD driver data output
50 D[3] O LCD driver data output
51 D[2] O LCD driver data output
52 D[1] O LCD driver data output
53 D[0] O LCD driver data output
54 /WR O LCD driver WR signal
55 A23 O LCD driver data/command switch
56 GND - Ground
57 R_SET2 I Radio setting signal 2
58 R_SET1 I Radio setting signal 1
59 R_SET0 I Radio setting signal 0
60 GND - Ground
1 GPS_PWR I Antenna power supply detection
2 GPS_ALM I Antenna open/short detection
3 GND - Ground
4 GND - Ground
5 GPS_ANT_SW O Enable signal for 33GPS
6 GPS_PA_EN O GPS receiver part switching
7 /BT_SHUTDOWN O Shutdown signal output
8 WCLK O Audio serial data bus word clock
9 BCLK O Audio serial data bus bit clock
10 BT_AUD_DI I Audio signal input
11 BT_AUD_DO O Audio signal output
12 RTS2 O Serial data output
Function
switch
signal
CN2
signal output
output
output
Pin No. Name I/O
13 CTS2
14 G_RXD2
15 G_TXD2 O Serial data output
16 BT_SW O Enable signal for 33BT and 18BT
17 GPSBT_DET
18 GND
19 54M O 5.4V output
20 54M O 5.4V output
2.6.2 Module (BT/GPS) unit (XC2-0040-10)
Pin No. Name I/O
1 54M I 5.4V input
2 54M I 5.4V input
3 GND - Ground
4 GPSBT_DET O BT/GPS unit detection (Ground)
5 BT_SW I Enable signal for 33BT and 18BT
6 G_TXD2 I Serial data intput
7 G_RXD2 O Serial data output
8 CTS2 O Serial data output
9 RTS2 I Serial data input
10 BT_AUD_DO I Audio signal input
11 BT_AUD_DI O Audio signal output
12 BCLK I Audio serial data bus bit clock
13 WCLK I Audio serial data bus word clock
14 /BT_SHUTDOWN I Shutdown signal input
15 GPS_PA_EN I GPS receiver part switching
16 GPS_ANT_SW I Enable signal for 33GPS
17 GND - Ground
18 GND - Ground
19 GPS_ALM O Antenna open/short detection
20 GPS_PWR O Antenna power supply detection
2.6.3 Sub unit (XC3-050M-00)
Pin No. Name I/O
1 DM I/O MIC data detection
2 HOOK/RXD/D- I/O Hook detection / Serial data input /
USB PHY data minus
3 MIC/VBUS I MIC signal input
4 ME - MIC ground
5 PTT/TXD I/O PTT input / Serial data output
6 GND - Ground
7 SB O Switched power supply
Function
I Serial data input
I Serial data input
I BT/GPS unit detection
- Ground
Function
CN1
input
input
signal input
Function
J1
(No.RA054<Rev.001>)1-25