Panasonic CR-YM4270K / CR-YM4272K Service Manual ▷ View online
7 BLOCK DIAGRAM
7
MAZDA / CR-YM4270K / CR-YM4272K
IC601 : C2CBJG000199
Pin
No.
Name
Description
I/O
Vol.(V)
FM
AM
1
VOL ENB
Contact signal (VOLUME)
I
5.1
5.1
2
H/C CLK
Clock for concentration
display
display
O
3.1
3.0
3
H/C SO
Serial data for concentration
display
display
O
0
0
4
H/C SI
Serial data for concentration
display
display
I
0
0
5
H/C BUSY
Busy signal
O
0
0
6
PWR ON
Power on/off
O
5.1
5.1
7
AUTO/MEK
A
A
Air conditioner mode
O
5.1
5.1
8
CD/MD CLK Clock for CD/MD
I
0
0
9
CD/MD
DATA
DATA
Data for CD/MD
I
0
0
10 CD/MD
CD/MD mode selection
O
0
0
11 RESET
System reset
I
5.0
4.9
12 XT2
Not used
-
-
-
13 XT1
(Connecting to ground)
-
0
0
14 VSS
Ground
-
0
0
15 X2
Crystal ocsillator
-
1.5
1.5
16 X1
Crystal ocsillator
-
1.4
1.4
17 REG OFF
(Connecting to ground)
-
0
18 REGC
Bypass capacitor terminal
-
3.6
3.6
19 VDD
+5V power supply
-
5.1
5.1
20 H/C LED
RDEF
LED control for concentration
display
display
O
0
0
21 H/C LED
REC
LED control for concentration
display
display
O
0
0
22 H/C LED
FRE
LED control for concentration
display
display
O
0
0
23 SW CHK
Display mode check
I
5.1
5.1
24 LCD CLK
Clock for LCD
O
5.1
5.1
25 LCD CS
Chip select for LCD driver
O
5.1
5.1
26 LCD RST
Reset for LCD driver
O
5.1
5.1
27 LCD RS
LCD registor selection
O
5.1
5.1
28 CD EJECT
CD eject SW
I
5.1
5.1
29 LCD DATA
LCD data
O
0
0
30 LCD AC
LCD address
O
0
0
31 DIM
CANSEL
Dimmer cansel signal
O
0
0
32 TINE ENB
Contact signal (TUNE)
I
0.9
0.9
33 TUNE ENA
Contact signal (TUNE)
I
5.1
5.1
34 RDS OFF
RDS mode off
O
5.1
0
35 P.ON
System power on/off
O
5.1
5.1
36 LCD ON
LCD illumination on/off
O
5.1
5.1
37 TYPE1
Setting value for model type
I
5.1
5.1
38 TYPE2
Setting value for model type
I
0
0
39 BOSE
Audio output type
I
0
0
40 VSS
Ground
-
0
0
41 VDD
+5V power supply
-
5.1
5.1
42 AUX1
Not used
-
-
-
43 AUX2
Not used
-
-
-
44 E2P DIN
Security data
O
5.1
5.0
45 E2P DATA
Security data
I
0
0
46 E2P CLK
Shift clock
O
0
0
47 E2P STB
Data strobe
O
0
0
48 AMP CONT
Ext. Amp on/off
O
5.1
5.1
49 TEL MUTE
Telephone mute
I
5.0
4.9
50 VOL CLK
Clock for E-volume cont.
O
0
0
51 VOL DATA
Data for E- volume cont.
O
0
0
52 AMP STBY
Power Amp stand-by signal
O
5.0
5.1
53 SOUCE1
AF selection (IDC/MD/RADIO)
O
5.0
5.1
54 SOUCE2
AF selection (IDC/MD/RADIO)
O
0
0
55 CLIP DET
Clip detection
I
5.1
5.1
Pin
No.
Name
Description
I/O
Vol.(V)
FM
AM
56 MUTE
Mute output
O
5.1
5.1
57 MBUS OUT
M-BUS data output
O
0
0
58 BOSE ACC
OUT
Not used
-
-
-
59 CAN BUSY
CAN-BUS busy (Note 2)
I
0
0
60 CAN RST
CAN-BUS cont. reset (Note 2)
O
5.1
5.1
61 RDS MUTE
RDS mute
O
5.1
5.1
62 NC
No connection
-
-
-
63 RADIO ON
Not used
-
-
-
64 WP
Write pulse
O
5.1
5.1
65 PLL DATA
PLL data
O
5.1
5.1
66 CAN SI
CAN-BUS data (Note 2)
O
0
2.8
67 CAN SO
CAN-BUS data (Note 2)
I
4.2
5.1
68 PLL SD
PLL data
I
3.8
3.8
69 PLL CLK
PLL clock
O
5.1
5.1
70 ST
FM stereo detection
I
5.1
5.0
71 ILL BL
Not used
-
-
-
72 LCD BL
Not used
-
-
-
73 TEST
(Ground pull-down)
-
0
0
74 ST SW
Steering switch input
I
5.0
5.0
75 +B.V
Battery detection
I
3.2
3.2
76 V.CONT
Phase diff. level detection
I
3.7
3.7
77 NOISE
Noise detection
I
0
0
78 MP
FM multipass detection
I
0
0
79 KEY2
Key data input
I
4.6
4.6
80 KEY1
Key data input
I
4.6
4.6
81 KEY3
Key data input
I
4.6
4.6
82 AVDD
+5V power supply
-
5.1
5.1
83 AVREF
+5V power supply
-
5.1
5.1
84 AVSS
Ground
-
0
0
85 RX
(Connecting to ground)
-
0
0
86 TX
(Connecting to ground)
-
0
0
87 J56/J37
(Ground pull-down)
-
0
0
88 SPEED
Vehicle speed detection
I
0
0
89 ILL DET IN
ILL+ detection
I
5.1
5.1
90 IG2 ON
Ignition2 on signal
O
5.1
5.1
91 MBUS IN
M-BUS data input
I
5.1
5.1
92 ACC DET
ACC detection
I
5.1
5.1
93 BAT DET
Battery detection
I
5.1
5.1
94 RDS DATA
RDS data input
I
2.5
1.0
95 SIG IN
Serial communication data
I
5.1
5.1
96 SIG OUT
Serial communication data
O
4.0
5.0
97 RDS CLK
RDS clock
I
2.6
0
98 ANT AMP
Antenna Amp power output
O
0
0
99 BEEP
Beep output
O
0
0
100 VOL ENA
Contact signal (VOLUME)
I
5.1
5.1
Note 1 :
Voltage measuerments are with respect to ground, with a
voltmeter (internal resistance : 10M ohms).
voltmeter (internal resistance : 10M ohms).
Note 2 :
Only for CR-YM4272K.
8 TERMINALS DESCRIPTION
8
MAZDA / CR-YM4270K / CR-YM4272K
IC202 : C1BB00000284
IC701 : C1EA00000028
9 PACKAGE AND IC BLOCK DIAGRAM
PA101 : YEP0PTB566A0
9
MAZDA / CR-YM4270K / CR-YM4272K
IC201, 504 : C0JBAR000066
IC502 : C1EB00000059
IC602 : C3EBCG000037
IC604 : AN8065E1
ANTI-
ALIASING
FILTER
OSCILLATOR
AND
DIVIDER
BIPHASE
SYMBOL
DECODER
QUALITY BIT
GENERATOR
DIFDERENTIAL
DECODER
57kHz
BANDPASS
(8th ORDER)
COSTAS LOOP
VARIABLE AND
FIXED DIVIDER
FIXED DIVIDER
CLOCKED
COMPARATOR
CLOCK
REGENERATION
AND SYNC
REFERENCE
VOLTAGE
RECONSTRUCTION
FILTER
4
MUX
SCOUT
CIN
VDDA
Vref
VSSA
MODE
TEST
VSSD
VDDD
OSCO
OSCI
T57
RDCL
RDDA
QUAL
1
2
16
8
5
7
3
6
15
9
10
14
12
13
11
TEST LOGIC AND OUTPUT
SELECTOR SWITCH
Vp1
IC152 : C1EB00000061
10
MAZDA / CR-YM4270K / CR-YM4272K
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