Microprocessor: M30622Ma-A76Fp; Microprocessor Periphery Block Diagram; Key Matrix; Discrimination Of Destination - Kenwood RXD-V333 Service Manual

RXD-V333/V535//V636/V737

4. Microprocessor: M30622MA-A76FP

4-1 Microprocessor Periphery Block Diagram

X14,IC1
FL DRIVER
(LC75711NED)
50
X14,ED1
Vaccume Fluorescent
Display
(HNA-15MM18T)
X32,IC5
DSP IC
(CXD3008Q)
X32,IC12
MPEG DECODER
X32,IC11
S-DRAM

4-2 Key Matrix

Input Voltage
(V)
0.00~0.23 REV.MODE
0.26~0.75
0.79~1.29 TAPE EQ.
1.33~1.84 OPEN/CLOSE
1.88~2.38 DISC SKIP
2.42~2.93
2.96~3.45
3.49~3.98
4.01~4.52
4.54~4.80 KEY OFF
The input voltage value : for [4.8V] in a standard voltage
6
CIRCUIT DESCRIPTION
X28,IC1
X13,IC1
4
6
3
X32,IC9
X32.IC13
RAM
KEY3 KEY2
Pin 94 Pin 95
-
REC EX.BASS
CD PLAY/PAUSE
BAND
TAPE B FWD/
REV PLAY
TAPE A FWD/
DISC3
REV PLAY
DISC2 AUX
DISC1 STOP
- -
KEY OFF
DECK SYSTEM IC
(CXA1498S)
6
M30622MA-A76FP
VIDEO AUDIO DAC
KEY1
Pin 97
POWER
DISPLAY/DEMO
TUNING MODE
MENU
SOUND
SELECT
BACK
ENTER
-
KEY OFF
3
DECK MECHA
5
X13,IC2
SYSTEM IC
2
(M62498AFP)
TUNER PACK
3
PLL IC
(LC72131)
3
5
CD MECHA
CDM-35
7

4-3 Discrimination of Destination

Input Voltage TYPE 1
(V) Pin 91
0.00 1.23 RXD-V535
1.25 2.48 RXD-535S
2.50 3.73 RXD-737S
3.75 5.00 RXD-636