Panasonic CR-YM4270K / CR-YM4272K Service Manual ▷ View online
6 REAR/TOP/BOTTOM VIEW AND CONNECTORS
6
MAZDA / CR-YM4270K / CR-YM4272K
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
Click on the first or last page to see other CR-YM4270K / CR-YM4272K service manuals if exist.