Kenwood NXR-710 Service Manual page 54

NXR-710
Pin No. Name I/O
26 AGC
27 33A
28 /EWP
29 HWV1
30 I2CCK
31 SPSCLK1
32 I2CDA I/O Serial data
33 SPSD1
34 /IOCS
35 /EVCS
36 NC
IN IF_SIG
OUT GND
CN40 (To X54-358 CN502)
1 SB
2 SB
3 GND
4 NC
5 DAT
6 PSW
7 STB1
8 CLK
9 SOE
10 TXD1 I/O MIC PTT, UART TX data
11 K1
12 RXD1
13 K2
14 K3
15 K4
16 K5
17 VLI
18 5C
19 MIG
20 MIC
CN41 (To TEST/SPKR 15pin Connector)
1 SB
2 SB
3 GND
4 GND
CN42 (To TEST/SPKR 15pin Connector)
1 AO5
2 AO4
3 AO3
4 SPO
5 SPO
54
TERMINAL FUNCTION
Function
O Auto gain control voltage
O 3.3V voltage
O EEPROM write control signal
I Hardware version signal
O Serial clock
O Serial clock
O Serial data
I IO expander chip select signal
O DA converter chip select signal
- No connection
CN39
I 450kHz IF signal
- Ground
O Power supply input
O Power supply input
- Ground
- No connection
O Serial data
I Power switch signal
O Data latch signal
O Serial clock
O Output enable signal
I Key scan input
I Hook detect signal, UART TX data
I Key scan input
I Key scan input
O Key scan output
O Key scan output
I Speaker audio level control voltage
O 5V voltage
- MIC ground
I MIC signal
O Power supply output
O Power supply input
- Ground
- Ground
O Auxiliary output 5
O Auxiliary output 4
O Auxiliary output 3
O Speaker AF output
O Speaker AF output
Pin No. Name I/O
6 AO2 O Auxiliary output 2
7 AO1 O Auxiliary output 1
8 SPI I Internal speaker AF input
9 RSI O RSSI voltage
10 RD O RX data output
11 SPG - Speaker ground
12 SPG - Speaker ground
CN43 (To INT SPKR )
1 SPO O Internal speaker AF output
2 SPG - Speaker ground
CN44 (To Control I/O 25pin D-sub Connector)
1 NC - No connection
2 NC - No connection
3 SPM_D25 I Speaker mute signal input
4 IO6_D25 I/O Programmable function input/output 6
5 RXG - RX signal ground for RA,RD
6 IO5_D25 I/O Programmable function input/output 5
7 RA_D25 O RX-Audio output (voice)
8 IO4_D25 I/O Programmable function input/output 4
9 RD_D25 O RX-DATA output (data or signaling)
10 IO3_D25 I/O Programmable function input/output 3
11 TA_D25 I TX audio input (voice)
12 IO2_D25 I/O Programmable function input/output 2
13 TD_D25 I TX-DATA input (data or signaling)
14 IO1_D25 I/O Programmable function input/output 1
15 DG - Control line ground
16 TXG - TX signal ground for TA,TD
17 AI3_D25 I Programmable function input 3
18 BER_DATA_D25 O Bit error rate data
19 AI2_D25 I Programmable function input 2
20 SC_D25 O Squelch control output
21 AI1_D25 I Programmable function input 1
22 /EPTT_D25 I External PTT
23 TXD0_D25 O UART TX data
24 EXT_MON_D25 I External monitor signal
25 RXD0_D25 I UART RX data
26 BER_CLK_D25 O Bit error rate clock
27 NC (RSSI) No connection (RSSI)
28 NC - No connection
29 NC - No connection
30 NC - No connection
CN301 (To X57-794 CN700)
1 GND - Ground
2 +B I Power supply input
3 SB I Power supply input
Function