© 2003-4 PRINTED IN JAPAN
B53-0049-00 (N) 1860
TRAFFIC MESSAGE CHANNEL RECEIVER
KNA-TM320
SERVICE MANUAL
TR
AF
FIC
ME
SS
AG
E
CH
AN
NE
L R
EC
EIV
ER
Metallic cabinet
(A01-2818-02)
DC cord
(E30-6250-05)
Cord with connector
(E30-6251-05)
Mounting hardware
(J21-3801-04)
Screw set
(N99-1747-05)
Antenna adaptor
(T90-0512-05)
KNA-TM320
2
BLOCK DIAGRAM
TMC F/E
A1
IC400
DECODER
OSC
4.32MHz
u-COM
IC200
RESET
IC201
OSC
16MHz
BUF
IC203
NAVI
I/F CONNECTOR
IC500
RS422 I/F
POWER SUPLLY
CONNECTOR
POWER
BU
LIMITER
BU 5V
AVR
BU5V
5V SW
Q100,105
Q101
Q103
5V
SYS-ON
Q108- 111
8V AVR
8V
VOLTAGE DOWN
BUDET
Q106
SUPLLY
DETECTION
T PLL-CE
T PLL-DAT
PD
T PLL-CLK
TMC SM
TMC SD
T QUAR
T DATA
TMC CLK
SYS-ON
BU DE
P-ON
RX
TX
COMPONENTS DESCRIPTION
ELECTRIC UNIT (X25-9822-70)
Ref. No.
Application/Function
Operation/Condition/Compatibility
IC100
Power supply control IC
Power supply control for BU5V. Composes stable power supply in combination with Q101.
IC200
System microcomputer
IC201
Reset IC
Output Lo, when the voltage of the 5V microcomputer system goes at less than 4.2V.
IC203
Buffer
Reverse buffer for P-ON IN signal.
IC400
Data decoder
RDS data demodulation circuit.
IC500
Serial communication
RS422 serial communication driver and receiver.
Q100
Voltage limiter
Contains the BU voltage to 16V or less in combination with Q105.
Q101
BU5V power supply
Power supply output driver for BU 5V. Composes stable power supply in combination with IC100.
Q103
5V
5V power supply.
Q104
P ON SW
When base becomes Hi, Q104 comes ON, supplying BU to 8V lines of the internal circuits.
Q105
Voltage limiter
Contains the BU voltage to 16V or less in combination with Q100.
Q106
BU detection SW
This is turned ON when BU comes ON.
When momentary reduction is detected, or when BU is OFF, goes OFF.
Q107
P ON SW
When base becomes Hi, Q104 comes ON, supplying BU to 5V lines of the internal circuits.
Q110~112
8V power supply
8V Power Supply.
KNA-TM320
3
MICROCOMPUTER'S TERMINAL DESCRIPTION
SYSTEM MICROCOMPUTER : M30620FCAFP4Q7 (X25-982 : IC200)
Pin No.
Pin Name
I/O
Function
Processing Operation Description
1-
Not used (N.C.)
2
TMC-ON
O
TMC tuner ON/OFF
Not used (N.C.)
3~7
-
Not used (N.C.)
8
BYTE
I
External data bus width switching input
L : 16 bit, H : 8 bit
9
CNVss
I
Processor mode switching
L : Single chip mode and memory expansion mode,
H : Microprocessor mode
10,11
-
Not used (N.C.)
12
RESET
I
System reset
L : Reset operation
13
XOUT
O
System clock output
System clock output to Xtal
14
Vss
I
Power supply input terminal (GND)
Power supply input terminal (GND)
15
XIN
I
System clock input
System clock input from Xtal
16
Vcc
I
Power supply input terminal (BU5V)
Power supply input terminal (BU5V)
17
NMI
I
NMI external interrupt input
Pull up to BU5V by returning resistor
18,19
-
Not used (N.C.)
20
P-ONIN
I
P-ON Input
L : POW ON, H : POW OFF
21~28
-
Not used (N.C.)
29
SCL
O
I2C clock output
Serial communication clock output
30
SDA
I/O
I2C data output
Serial communication data output
31
F-TXD
O
FLASH I/F data output
Flash microcomputer memory data output terminal
32
F-RXD
I
FLASH I/F data input
Flash microcomputer memory data input terminal
33
FS-CLK
O
FLASH I/F clock output
Flash microcomputer I/F clock output terminal
34
F-BUSY
O
FLASH I/F
Flash microcomputer I/F
35
TXD
O
NAVI communication transmission
NAVI serial communication transmission
36
RDX
I
NAVI communication reception
NAVI serial communication reception
37~40
-
41
F-EPM
I
FLASH I/F
Flash microcomputer I/F
42
-
Not used (N.C.)
43
BU DET
I
BU reduction detection
L : Normal, H : Input voltage (8.5V or less detection)
44,45
-
Not used (N.C.)
46
F-CE
O
FLASH I/F
Flash microcomputer I/F
47,48
-
Not used (N.C.)
49
SYS-ON
O
5V, 8V control
L : 5V, 8V OFF, H : 5V, 8V ON
50,51
-
Not used (N.C.)
52
F-PU
I
Terminal for FLASH write
Pull up input for writing to flash microcomputer
53~59
-
Not used (N.C.)
60
TYPE1
I
Destination selection
Switching for charging
61
TYPE2
I
Destination selection
Switching for market models/OEM
62
Vcc
I
Power supply input terminal +5V
Power supply input terminal (BU5V)
63
-
Not used (N.C.)
KNA-TM320
4
Pin No.
Pin Name
I/O
Function
Processing Operation Description
64
Vss
I
Power supply input terminal (GND)
Power supply input terminal (GND)
65~74
-
Not used (N.C.)
75
TMC-CLK
I
TMC clock input
76,77
-
Not used (N.C.)
78
TQUAL
I
TMC reception condition detection
TMC reception condition detection
79
TDATA
I
TMC data input
TMC data reception
80
-
Not used (N.C.)
81
PLL-DATA
O
PLL serial data output
F/E PLL serial data output
82
PLL-CLK
O
PLL serial clock output
F/E PLL serial clock output
83
PLL-CE
O
PLL data enable output
F/E PLL data enable output
84
-
Not used (N.C.)
85
TMC-SD
I
Station detection
Station detected reception at F/E
86
TREQ
I
Seek request reception
L : Seek operation, H : Normal reception condition
87
Pdo
I
IF count input
F/E IF count input
88~92
-
Not used (N.C.)
93
TMCSM
I
Station detection
F/E station detected meter input
94
TNOISE
I
Noise level detection
Not used (N.C.)
95
-
Not used (N.C.)
96
Avss
I
Analog power supply input (GND)
Analog power supply input (GND)
97
-
Not used (N.C.)
98
VREF
I
Reference voltage input
A/D conversion reference voltage input
99
Avcc
I
Analog power supply input +5V
Analog power supply input (BU5V)
100
PEFCON
O
Reference voltage output
A/D conversion reference voltage output
MICROCOMPUTER'S TERMINAL DESCRIPTION
KNA-TM320
6
A
B
C
D
E
1
2
3
4
5
6
7
PC BOARD (COMPONENT SIDE VIEW)
R323
C316
C307
C306
R306
C117
C111
R111
C227
R112
F100
F101
R102
R114
R115
R505
R502
C503
R509
C500
R501
R500
C315
C324
L307
C325
L302
C326
R301
L306
C329
R300
C328
C304
L301
C301
C300
L300
R308
L304
L309
R302
L308
R310
R307
C327
C308
R319
R311
C309
R309
R312
R314
C310
C311
L310
R333
L305
C320
R327
R315
L311
R313
C317
R324
C319
R329
R325
R328
C323
C318
C201
R201
R110
R113
L200
R101
C108
C230
C200
R239
R274
C216
R223
R240
R248
R246
R247
R235
C225
R243
R277
R236
R244
C202
C215
C209
C224
C206
R205
R279
R203
R204
R200
L401
R409
C405
R404
C210
R219
R220 R218
R216
C409
L400
R202
C322
L100
12
C110
C104
2
1
10
9
C116
6
1
W302
C106
C226
E
C109
C105
C112
11
0
X200
C412
C403
C401
C408
X400
1
6
7
16
18
16
9
1
30
80
51
31
50
100
81
E
B
1
3
5
4
E
B
31
45
BE
EB
BE
E
B
18
9
16
C313
3
15
4
C
C
BE
E
1
3
4
5
E
B
B
E
B
D100
Q104
D108
Q112
D105
D104
D500
D506
Q302
Q300
Q301
Q111
Q110
Q101
D103
P101
Q109
J100
J500
E1
J300
Q108
CN200
A1
IC500
IC203
IC100
IC201
IC200
IC400
ELECTRIC UNIT X25-9822-70 (J74-1531-12)
X25-9822-70
IC
Q
Address
100
2D
200
3D
201
3C
203
4B
400
4D
500
4B
101
2D
104
3B
110
2C
111
2C
112
3B
Refer to the schematic diagram for the values of resistors and capacitors.