Kenwood NEXEDGE NXR-901, Service Manual

Page: 36 / 198

NXR-901
36
TERMINAL FUNCTION
Pin No. Name I/O Function
18 SR_CLK I Shift Register Clock
19 GND - Ground
20 SR_DATA I Shift Register Data
21 GND - Ground
22 STB1 I Shift Register Strobe
23 GND - Ground
24 K1 O Key Scan
25 K2 O Key Scan
26 K3 O Key Scan
27 K4 I Key Scan
28 K5 I Key Scan
29 DC8 I 8V Power supply
30 GND - Ground
31 50MPU I Switched 5V power supply
32 50MPU I Switched 5V power supply
33 DC8 I 8V Power supply
34 DC8 I 8V Power supply
35 GND - Ground
36 DC8 I 8V Power supply
CN923 (To X45-387 D/4 CN905)
1 VOLUME_IN I Volume control input for AF signal
2 33MPU O Switched 3.3V power supply
3 GND - Ground
Pin No. Name I/O Function
4 33AUD O Switched 3.3V power supply
5 SB O Power supply output
6 SCM_EN - No connection
7 GND - Ground
8 PTT_TXD_SCM I MIC PTT
9 HOOK_RXD_SCM I HOOK detect signal
10 MIG - MIC ground
11 MIC I MIC signal input
TX unit (X56-3150-11) (C/3)
Pin No. Name I/O Function
CN960 (To X56-315 B/3 CN920)
1 DC8 I 8V Power supply
2 GND - Ground
3 50MPU I Switched 5V power supply
4 STB I Shift Register Strobe
5 SR_OE I Shift Register Output Enable
6 SR_CLK I Shift Register Clock
7 SR_DATA I Shift Register Data
8 LED1 I D960 segment “F” control
9 GND - Ground
10 LED10 I D961 segment “F” control
COM D-Sub 9-pin Connector
Pin
No.
Pin Name I/O
Signal
Type
Description /
port Type
Specifi cation Min Typ Max Unit Remarks
1 CD I Digital Carrier Detect Input voltage range –30 - 30 V
Conform to RS-232C
2 RD I Digital Receive Data Input voltage range –30 - 30 V
3 SD O Digital Send Data Voltage swing ±5 ±5.2 - V
4 DTR O Digital Data Terminal Ready Voltage swing ±5 ±5.2 - V
5 SG - GND Signal GND - - - - -
6 DSR I Digital Data Set Ready Input voltage range –30 - 30 V
7 RTS O Digital Request to Send Voltage swing ±5 ±5.2 - V
8 CTS I Digital Clear to Send Input voltage range –30 - 30 V
9 CI I Digital Ringer DET Input voltage range –30 - 30 V