Main Microprocessor; Microprocessor Periphery Block Diagram - Kenwood RXD-652 Service Manual

4. Main microprocessor M30622MC-526FP (X13:IC1)

4-1 Microprocessor periphery block diagram

CD MECHA
X14(IC51)
DOT DRIVER
X14(IC52,53)
LED DRIVER x 2
X13(IC7)
DSP/DAC IC
X13(IC10)
DOLBY PROLOGIC IC
4-2 VOLTAGE KEY MATRIX
INPUT VOLTAGE
(V) (HEX)
0.00~0.26 00H~0DH
0.27~0.81 0EH~29H
0.82~1.37 2AH~46H
1.38~1.94 47H~63H
1.95~2.51 64H~80H
2.52~3.07 81H~9DH
3.08~3.62 9EH~B9H
3.63~4.16 BA~D5H
4.17~4.73 D5~F2H
4.74~5.00 F3H~FFH
RXD-652/702/752/772S/852/A81/A601/A701
CIRCUIT DESCRIPTION
X28(IC1)
DECK PLAY/REC EQ IC
X13(IC1)
MAIN U-COM
M30622MC–526FP
X13(IC3)
KEY1
Pin97
DISC SKIP
DISC2
CD STOP
OPEN/CLOSE
A/B
FWD PLAY
RVS PLAY
DOLBY(T.EQ.)
NO KEY
KEY OFF
X13(IC2)
AUDIO CONTROL IC
X13(A1:IC2)
X28(IC4)
X13(IC14)
DECK PORT DRIVER
KEY2
Pin95 Pin94
BAND TUNING
EX. BASS (SW) DISP./DEMO
ENTER INPUT
RWD SELECT
FF RVS. MODE
PLAY/PAUSE TAPE STOP
DISC1
POWER DISC3
MENU BACK
KEY OFF KEY OFF
DECK MECHA
PLL IC
EXPANDER IC
KEY3
REC
7