
6.1. Main Block
IC601 : C2CBKH000100
Pin
No. Port Description I/O Volts (V)
FM AM CD TA
PE
1 BEEP Beep output O 0 0 0 0
2 BIT3 NCA1 rotary switch 3 I 4.9 4.9 4.8 0
3 BIT2 NCA1 rotary switch 2 I 4.9 4.9 4.8 4.9
4 BIT1 NCA1 rotary switch 1 I 0 0 0 4.9
5 FAN ON
(NC) Not used - - - - -
6CD-ON H: CD (IDC) deck
microcomputer
communication is possible
L: CD (IDC) deck micro
computer communication is
not possible
O 0 0 4.8 0
7 CD-
RESET H: Normal L: Reset O 4.9 4.9 4.9 4.9
8 CD-
SCKM CD (IDC) deck serial
communication clock output O 0 0 4.8 0
9CD-SOM CD (IDC) deck serial
communication input I 4.9 4.9 2 4.9
10 CD-SIM CD (IDC) deck serial
communication output
terminal
O 4.9 4.9 3.7 0
11 RESET H: Normal L: Reset I 4.9 4.9 4.9 4.9
12 XT2 (NC) Not Used - - - - -
13 XT1 Connecting to GND I 0 0 0 0
14 GND Ground - 0 0 0 0
15 X2 Oscillation Terminal (Main)
12.396875MHz O 1.6 1.6 1.6 1.6
16 X1 Oscillation Terminal
(Main)12.396875MHz I 1.5 1.5 1.5 1.5
17 REGOFF Connecting to GND - 0 0 0 0
18 REGCPU Regulator output stable
capacity connection. - 3.6 3.6 3.6 3.6
19 VDD0 Positive power supply - 4.9 4.9 4.9 4.9
20 NC Not used O - - - -
21 NC Not used O - - - -
22 NC Not used O - - - -
23 SHIYOU4 H: Left handle L: Right handle I 0 0 0 0
24 ADIM H: Tail cancel off notice
L: Tail cancel on notice I 4.8 4.8 4.8 4.8
25 NC Not used O - - - -
26 DSP-
CNT H: When receiving FM 76.0-
78.9MHz
L: Other than the above
O 4.9 0 0 0
27 DSP-
BUSY H: Data in the DSP receiving
buffer
L: No data in the DSP
receiving buffer
I 0.5 0.5 0.5 0.5
28 DSP-
RSTB DSP reset output O 4.9 4.9 4.9 4.9
29 DSP-CE Enabled chip output for
combined power IC, DSP O 0 0 0 0
30 DSP-CL Clock output for combined
power IC, DSP O 4.9 4.9 4.9 4.9
31 DSP-DO Not used (However it is
connected to DSP IC and
thus considered as an input)
I 0.6 0.5 0.6 0.5
32 DSP-DI Data output for combined
power IC, DSP O 0 0 0 0
33 PW/STB
YSTBY output for power IC O 4.9 4.9 4.9 4.9
34 LCD-SCK LCD data clock output O 0 0 0 0
35 LCD-
DATA LCD data input/output I/O 4.9 4.9 4.9 4.8
36 LCD-STB LCD data STB output O 0 0 0 0
Pin
No. Port Description I/O Volts (V)
FM AM CD TA
PE
37 LCD-
KEYREQ H: Key input data
L: No key data I 0 0 0 0
38 LCD-OFF H: Normal L: Displays off O 4.9 4.9 4.9 4.9
39 LCD-
RESET H: Normal L: Reset O 4.9 4.9 4.9 4.9
40 GND Ground Terminal - 0 0 0 0
41 VDD Positive power supply - 4.9 4.9 4.9 4.9
42 CD-EJ H: CD eject off L: CD eject on I 4.9 4.9 4.9 4.9
43 CST-EJ H: CST-EJ off L: CST-EJ on I 4.9 4.9 4.9 4.9
44 MODE-A Mode encoder input A I 4.9 4.9 4.9 4.9
45 MODE-B Mode encoder input B I 4.9 4.9 4.9 4.9
46 VOL-A Volume encoder input A I 4.9 4.9 4.9 4.9
47 VOL-B Volume encoder input B I 0.5 0.5 0.5 0.5
48 SHIYOU1 H: IDC L: CDP I 0 0 0 0
49 SHIYOU2 Ground pull down I 0 0 0 0
50 SHIYOU3 Ground pull down I 0 0 0 0
51 AMNC-
ON/OFF H: AMNC off L: AMNC on O 4.9 0 4.9 4.9
52 MUTE H: Mute on L: Mute off O 0 0 0 0
53 SD H: No electric field
L: With electic field I 4.9 4.9 3.3 3.3
54 PLL-SCL PLL data communication
clock output O 4.9 4.9 4.9 4.9
55 PLL-SDA PLL data communication
output I/O 4.9 4.9 4.9 4.9
56 ST H: No stereo input
L: With stereo input I 4.9 4.9 3.1 3.1
57 MSOUT H: No sounds L: With sounds I 4.8 4.8 4.8 0
58 NC Not used - - - - -
59 R-IN2 (F-IN1) : L (R-IN2) : -> eject
(F-IN1) : H (R-IN2) : -> brake O 0 0 0 0
60 F-IN1 (F-IN1) : L (R-IN2) : -> brake
(F-IN1) : H (R-IN2) : -> loads O 0 0 0 0
61 MSPL/FF H: FF/REW L: Play O 0 0 0 0
62 DOLBY H: Dolby off L: Dolby on O 0 0 0 4.9
63 EQ H: Metal tape L: Normal tape I 4.9 4.9 4.8 0
64 NC Not used - - - - -
65 NC Not used - - - - -
66 NC Not used - - - - -
67 NC Not used - - - - -
68 WP H: In E2PROM write protect
(input)
L: E2PROM is writing (output)
I/O 4.9 4.9 4.9 4.9
69 T-LOAD H: Cassette holder emitance
L: Normal operation and
cassette holder pushes in
I 4.9 4.9 4.9 0
70 F/R H: Sounds from side B
L: Sounds from side A O 0 0 0 4.9
71 NC Not used - - - - -
72 NC Not used - - - - -
73 TEST
(VPP) Connecting to ground - 0 0 0 0
74 NC(MP) Not used O - - - -
75 Vcont Analog input of electric field
strength I 0.5 0.8 0 0
76 AMNC-IN AM noise cancel decision
analog input using the A/D
input
I 0 1 0 0
77 NC Not used - - - - -
78 ST-SW1 Key input for steering
switch(1) I 4.9 4.9 4.8 4.9
79 ST-SW2 Key input for steering
switch(2) I 4.9 4.9 4.9 4.9
80 MTL H: Normal tape L: Metal tape O 0 0 0 4.9
81 MSM H: 1 Speed L: 3 Speeds O 0 0 0 4.9
6 TERMINALS DESCRIPTION
6
CQ-ES0470K