Components Description - Kenwood NX-1200 Series Service Manual

Pin No. Name I/O
90 SRST I SRST for SWD
91 SBC O SB switch control
92 FLDM I Force Flash Load Mode
93 /SB_DET I Power Switch detect
94 BOOT0 -
95 SIM1 I
96 3CC O 5C and 32C Control
97 /INT I Interrupt
98 5TC O 5T Control
99 PDR_ON - GND
100 VDD6 - 32MD
2.5

COMPONENTS DESCRIPTION

2.5.1 TX-RX Unit (XC1-295K-01, XC1-296K-01)
Ref. No. Part Name
IC1 IC
IC2 IC
IC3 IC
IC4,5 IC
IC6 IC
IC100 IC
IC200 IC
IC201,202 IC
IC203 IC
IC300 IC
IC301 IC
IC302 IC
IC400 IC
IC401 IC
IC402 IC
IC403 IC
IC404 IC
IC405 IC
IC406 IC
IC407 IC
IC408 IC
IC500 IC
IC501 IC
IC502 IC
IC600 IC
IC601 IC
Function
Use / Function
Voltage regulator (32MS)
[3.2V AVR]
PLL IC
DC-DC Converter (200C)
[20V DC-DC]
DC amplifier [DC AMP]
Buffer amplifier [BUFF AMP]
* Q6 is only used in XC1-295K-01.
DC amplifier [DC AMP]
Transceiver IC
IQ AMP
Voltage regulator (32B) [3.2V AVR]
AF AMP
Buffer amplifier [BUFF AMP]
AF AMP
Voltage regulator (50M) [5.0V AVR]
Voltage regulator (50C) [5.0V AVR]
Voltage regulator (50V) [5.0V AVR]
Voltage regulator (32C) [3.2V AVR]
Voltage regulator (32M) [3.2V AVR]
Reset
INT DET
DC-DC converter (38M)
[3.8V DC-DC]
Voltage regulator (32MD)
[3.2V AVR]
Flash memory [FLASH]
MPU/DSP
Clock Buffer amplifier
[CLK BUFF AMP]
APC buffer [APC BUFF]
Modulation amplifier [MOD AMP]
Ref. No. Part Name
IC602 IC MIC AMP
IC603 IC AF AMP Filter [AF AMP FIL]
IC604,605 IC D/A converter [DAC]
IC606 IC VOX AMP
Q1 FET DC switch (assist) [DC SW]
Q3 TRANSISTOR Ripple filter
Q4 FET VCO
Q5,6 TRANSISTOR VCO buffer [VCO BUFF]
* Q6 is only used in XC1-295K-01.
Q100 TRANSISTOR Buffer amplifier [BUFF AMP]
Q101 FET DC switch (Batt DET) [DC SW]
Q102 FET DC switch (Curr DET) [DC SW]
Q103 TRANSISTOR DC switch [DC SW]
Q104 FET Pre-drive [PRE-DRV]
Q105 FET DC switch (APC) [DC SW]
Q106 FET Drive amplifier [DRV AMP]
Q107 FET RF final amplifier [FINAL]
Q108 FET DC switch (APC) [DC SW]
Q200 TRANSISTOR RF amplifier [RF AMP]
Q202 FET DC switch (32R) [DC SW]
Q300 TRANSISTOR DC switch (RED LED) [DC SW]
Q301 TRANSISTOR DC switch (GREEN LED) [DC SW]
Q302 TRANSISTOR DC switch (BLUE LED) [DC SW]
Q303,304 FET DC switch [DC SW]
Q305 TRANSISTOR DC switch [DC SW]
Q306,307 TRANSISTOR DC switch (Audio amplifier)
[DC SW]
Q308 FET Level shifter
Q309,310 TRANSISTOR DC Stabler [DC SW]
Q311 TRANSISTOR DC switch (Audio amplifier)
[DC SW]
Q312 TRANSISTOR DC switch (Emergency PTT)
[DC SW]
Q313 FET Level shifter
Q400 FET DC switch (5T Control) [DC SW]
Q402 FET DC switch [DC SW]
Q403 TRANSISTOR DC switch (Batt DET) [DC SW]
Q404 FET DC switch (Interrupt) [DC SW]
Q600,601 TRANSISTOR MIC AGC
D1 DIODE DC-DC converter [DC-DC CONV]
D2 ZENER Voltage regulator Protection
DIODE
D4 DIODE Ripple filter
D5-10 VARIABLE VCO Frequency control [VCO]
CAPACITANCE
DIODE
D101-104 DIODE Antenna switch [ANT SW]
D105 VARISTOR Surge protection [SURGE P]
Use / Function
(No.RA077<Rev.001>)1-13