Microprocessor Periphery Block Diagram; Port Description Of Microprocessor - Kenwood RXD-M33 Service Manual

RXD-M33/M33MD
4. Microprocessor : MN101C49KLB or MN101C49HLC(X29,IC701)

4-1 Microprocessor Periphery Block Diagram

X29,IC1
DOT DRIVER
(M66005-001FP)
51
X29,ED501
Vaccume Fluorescent
Display (HNA-16MM30T)
X29,IC22
DSP IC
(MN662748RPMFA)
CD MECHA.
(KSM213)

4-2 Port Description of Microprocessor

Port No. Port Name
1 GND
2 PH
3 TN TYPE
4 S LEVEL
5 CD PROTECT
6 MD BACKV
7,8 KEY2,KEY1
9 NO USE
10 VREF
11 VDD
12 OSC2
13 OSC1
14 GND
15 XI
16 XO
17 GND
18 MD TXD
19 MD RXD
20 NC
21 FL SDATA
22 NC
23 FL SCLK
24 FL RESET
25 FL CE
26 REM
27 MODEL TYPE
28 CD BLKCK
29 RDSCLK
30,31 ENC A,B
32 VDD2
33 RESET
34 CE
35 CL SW
8
Used for RXD-M33MD only.
CIRCUIT DESCRIPTION
X28,IC1
DECK SYSTEM IC (HA12230NT)
HA12230NT
6
4
X29,IC701
MN101C49KLB
6
MN101C49HLC
3
2
KEY REMOTE
KEY1,2 X29,A501
I/O
- Connected to ground.
I Deck reel sensor input.
I Discrimination of tuner destination.
I RDS signal level input. (RDS version only)
I Detection port for CD protection.
I Detection port for MD back up voltage.
I A/D key (1,2) input.
- Unused.
- A/D reference voltage input for the A/D converter.
I Power supply input (+5V).
O Main clock output (8.38MHz).
I Main clock input (8.38MHz).
- Connected to ground.
I Timer clock input (32kHz).
O Timer clock output (32kHz).
- Connected to ground.
O MD communication TX .(to mecha. u-com RX)
I MD communication RX .(to mecha. u-com TX)
- Unused.
O Data output to FL dot driver.
- Unused.
O Clock output to FL dot driver.
O Reset output to FL dot driver.
O CE output to FL dot driver.
I Remote control signal input.
I Discrimination port for model type.
I Sub code synchronous signal input. LîH : Interrupt
I RDS clock input. (E/T version only)
I Volume encoder (A/B) input.
I Power supply input (+5V) for flash ROM writing.
I Reset signal input for microcomputer.
I Back up detection input.
I Input port of close switch for CD tray.
RXD-M33MD only
MD MECHA
MDM-07
3
5
2
or
3
3
2
2
ENCODER
X29,S518
Description
DECK MECHA.
(ADR-2176TR3)
X29,IC601
SYSTEM IC
(M61510FP)
TUNER PACK
PLL IC
X29,IC502
RDS IC (E/T TYPE)
(BU1923F)
ACTIVE
H L
RESET
FIXED
RESET
AC On AC Off