Kenwood KCH-20R, Service Manual

Page: 12 / 38

1-12 (No.RA027<Rev.001>)
2.4.2 Interface unit (XC3-0110-20)
5 CLK O Clock output
6 VSS - Ground
7 DAT0 I/O Data 0
8 DAT1 I/O Data 1
9 CD I/O Card detect switch
10 COMMON - Ground
11 GND1 - Ground
12 GND2 - Ground
J2 (MIC jack)
1 BLC_4/
D+2 I/O Back light control signal / USB PHY data
plus
2 SB_2 O Switched power supply
3 GND - Ground
4 PTT/
TXD_3 I/O PTT input / Serial data output
5 ME_3 - MIC ground
6 MIC_3 I MIC signal input
7 HOOK/
RXD/D-2 I/O Hook detection / Serial data input / USB
PHY data minus
8 DM/
KVL_3 I/O MIC data detection
Pin No. Name I/O Function
CN13
1 53DC O 5.4V output
2 53DC O 5.4V output
3 GND - Ground
4 GND - Ground
5 CAN- I/O CAN data minus
6 CAN+ I/O CAN data plus
7 GND - Ground
8 GND - Ground
9 /AMP_PD O Power-Down signal of the Audio Amplifi-
er
10 H_1/2 O Head Number setting terminal
11 AUXO1 I AUX output_1
12 AUXO0 I AUX output_0
13 AUXI1 O AUX input_1
14 AUXI0 O AUX input_0
15 /PSW I Detection signal input of power switch
16 /PRST O Reset signal
17 MICB- I MIC signal input minus_B
18 AFoB- O AF signal output minus_B
19 MICB+ I MIC signal input plus_B
20 AFoB+ O AF signal output plus_B
21 MICA- I MIC signal input minus_A
22 AFoA- O AF signal output minus_A
Pin No. Name I/O Function
23 MICA+ I MIC signal input plus_A
24 AFoA+ O AF signal output plus_A
25 ACC_MIC O AUX MIC signal output
26 AFi- I AF signal input minus
27 ACC_ME - AUX MIC ground
28 AFi+ I AF signal input plus
29 GND - Ground
30 GND - Ground
31 GND - Ground
32 NC - No connection
33 SB O Switched power supply
34 SB O Switched power supply
35 SB O Switched power supply
36 SB O Switched power supply
CN2 (ACC Interface)
1 GND - Ground
2 SP+ O Speaker output
3 SP- O Speaker output
4 Ao2 O AUX output 2
5 Ao1 O AUX output 1
6 Ai2 I AUX input 2
7 Ai1 I AUX input 1
8 AUX_ME - AUX MIC ground
9 AUX_MIC I AUX MIC signal input
10 GND - Ground
11 SB O Switched power supply
12 IGN I Ignition sense input
13 GND - Ground
CN5
1 /PRST I Reset signal
2 /PSW O Detection signal output of power switch
3 MICA+ O MIC signal output plus_A
4 MICA- O MIC signal output minus_A
5 MICB+ O MIC signal output plus_B
6 MICB- O MIC signal output minus_B
7 GND - Ground
8 NC - No connection
9 SB I Switched power supply
10 NC(IGN) - No connection (Ignition sense output)
11 AFiA+ I AF signal input plus_A
12 AFiA- I AF signal input minus_A
13 AFiB+ I AF signal input plus_B
14 AFiB- I AF signal input minus_B
15 CAN+ I/O CAN data plus
16 CAN- I/O CAN data minus
Pin No. Name I/O Function