Kenwood NXR-700 Service Manual page 33

Pin No. Name I/O
13 INRA_SW - No connection
14 NC - No connection
15 HOOK_RXD_SCM I Hook detection input
Power source control of audio power
16 AMP_SW O
amplifi er
17 SCM_EN - No connection
18 AF_MUTE O Audio mute control
19 INSP_SW - No connection
Serial data to DAC
20 EVOL_DATA O
(for audio level adjustment)
21 PTT_AM16C I "Press-to-talk-switch" signal to Main MPU
Serial clock to DAC
22 EVOL_CLK O
(for audio level adjustment)
23 GND - Ground
Serial load to DAC
24 EVOL_LD O
(for audio level adjustment)
25 TAAD_SW O Route formation signal of audio circuit
26 TA_SW O Route formation signal of audio circuit
27 BEEP_SW O Route formation signal of audio circuit
28 PATH_SW O Route formation signal of audio circuit
29 RXAD_SW O Route formation signal of audio circuit
30 MIC_SW O Route formation signal of audio circuit
31 MICAD_SW O Route formation signal of audio circuit
32 TD_SW O Route formation signal of audio circuit
33 NC - No connection
34 LO_VOL_DET I Detection of voltage for low voltage state
35 GND - Ground
36 PTT_TXD_SCM - No connection
CN402 (To X53-413 CN2)
1 HI_VOL_DET I Voltage monitor
2 GND - Ground
3 50MPU_A_GND - Ground
4 50MPU I 5V constant voltage
5 50MPU_A_GND - Ground
6 DC50 I 5V constant voltage
7 DC50 I 5V constant voltage
8 DC50 I 5V constant voltage
9 DC50 I 5V constant voltage
10 33MPU_A_GND - Ground
11 33MPU I 3.3V constant voltage
12 33MPU I 3.3V constant voltage
13 33MPU_A_GND - Ground
14 50MPU_A I 5V constant voltage
15 33MPU_A I 3.3V constant voltage
TERMINAL FUNCTION
Function Pin No. Name I/O
16 33SH O 3.3V constant voltage
17 50MPU_CONT O 5V regurator control
18 NC - No connection
"External press-to-talk-switch" signal
19 E_PTT_SH I
to Main MPU
20 SC_SH I "Squelch control" signal to Main MPU
21 GND - Ground
UART signal from RF control MPU to
22 SRXD_ATXO O
Main MPU
UART signal from Main MPU to RF
23 STXO_ARXO I
control MPU
24 GND - Ground
25 RF_PTT I "Press-to-talk-switch" signal to Main MPU
"During the transmission" signal to
26 TX_STATE I
Main MPU
27 QT_DQT I "Detect QT or DQT" signal to Main MPU
"Detect accident of RF block" signal to
28 RADIO_EER I
Main MPU
29 GND - Ground
"Frequency shift" signal to Analog
30 ADSP_CK_SFT O
mode DSP
31 TRUKING I "Trunking mode" signal to Main MPU
32 A16C_CK_SFT O "Frequency shift" signal to RF control MPU
33 BER_DAT O Serial data for measurement bit error rate
34 BER_CLK O Serial clock for measurement bit error rate
35 GND - Ground
System reset signal from modem con-
36 SYS_RST O
trol MPU
CN713 (To COM D-sub 9-pin connector)
1 CD - No connection
2 DSR I Data Set Ready
3 RD I Receive Data
4 RTS O Request to Send
5 SD O Send Data
6 CTS I Clear to Send
7 DTR O Data Terminal Ready
8 RI - No connection
9 GND - Ground
RX Unit (X55-3092-72)
Pin No. Name I/O
CN5 (To RX ANT)
1 RX_SIGNAL I Receive signal input (Coaxial)
CN41
1 MONITOR_PORT O Use for RX BPF tuning (Coaxial)
NXR-700
Function
Function
33