Kenwood NXR-5700, Service Manual

Page: 35 / 122

(No.RA033<Rev.001>)1-35
2.8.10 Microphone Connector
22 GND - Ground
23 I2CCK I I2C clock
24 /EVRXCS2 I RX EVOL2 chip select signal
25 /EVRXCS1 I RX EVOL chip select signal
26 GND - Ground
27 /RXPCS I RX PLL chip select signal
28 /RXIOINT O Interrupt signal of IO Expander(RX)
29 /IO_RST I Reset signal of IO Expander(ALL)
30 33MPU I 3.3V power supply
31 RF_B_ON I RF +B switch control signal
32 GND - Ground
33 SPSD0 I SPI0 data
34 GND - Ground
35 SPSCLK0 I SPI0 clock
36 GND - Ground
CN403
1 BPF_MONIT
OR2 O BPF tuning monitor terminal
Pin
No. Name I/O Function
CN405 (To Final Unit XC3-015 A/5 CN19: OPTIONAL)
1 SWED_RX I Switched RX signal from final unit
(For simplex operation with single
antenna)
CN406 (To RX ANT BNC Receptacle)
1 RX_SIGNAL I Receive signal input (from "RX"
BNC receptacle)
CN638
1 MCF_SOUR
CE I MCF tuning signal input
CN639
1 MCF_MONIT
OR O MCF tuning monitor terminal
CN641 (To CONTROL Unit XC1-064 CN103)
1 IF_SIG O 450kHz RX IF signal
CN802 (To TX Unit XC1-065 A/3 CN404)
1 RX_REF I 19.2MHz reference signal
Pin
No. Name I/O Function
Pin
Num
Pin
Name
I/O Signal
Type
Modifica-
tion
Description/
port Type
Spec and Condition Min Typ Max Unit Note
1 GND - GND No Digital GND - - 0.2 A
2 +B - Power No Power Supply Voltage value 10.8 13.6 15.6 V
Allowable
current value 0.2 A
3 GND - GND No Digital GND Allowable
current value 0.2 A
4 PTT I Digital No PTT Signal VIH 2.4 V
3.3V
47k//47k
PullUp
VIL 0.8 V
Input impedance 23.5k ohm
5 MIG - GND No MIC GND - - - - -
6 MIC I Analog No MIC Input Input amplitude value
(60%Deviation@1kHz) 3.0 5.0 7.0 mVrms
Input impedance 600 ohm
Allowable frequency 0.3 3 kHz
7 HOOK I Digital No HOOK Detect
Signal VIH 2.4 V
3.3V
2.2k PullUp
VIL 0.9 V
Input impedance 2.2k ohm
8 NC - - No - - - - -