Kenwood KDC-W8534 Service Manual page 13

MICROCOMPUTER'S TERMINAL DESCRIPTION
Pin No. Pin Name I/O
111 SA RST O
112 3.3VDD -
113 EVSS -
114 PON GREEN I/O
115 PON RED I/O
116 PON SW3V I/O
117 NC O
118~123 A21~A16 O
124 2.5VDD -
125 VSS -
126~133 A15~A8 O
134 3.3VDD -
135 EVSS -
136~142 A7~A1 O
143 NC -
144 D15 I/O
MECHANISM MICROCOMPUTER : 91CU27UG5UR8 (X32-573 : IC1)
Pin No. Pin Name I/O
1 VREFL I
2 DMUTE O
3 CSRST O
4 NC O
5 LZM I
6 RZM I
7 BREQ I
8 DSPINT I
9 SREQ O
10 NC O
11 S_DATA O
12 B_DATA I
13 CLK O
14 DSPTXD1 O
15 DSPRXD1 I
16 DSPSCLK1 O
17 AM0 -
18 DVCC -
19 X2 O
20 DVSS -
21 X1 I
22 AM1 -
23 RESET I
Function
Spectrum analyzer IC reset
Green key illumination light ON switch
Red illumination light ON switch
Rotary encoder power supply
Not used
Address output
Address output
Address output
Not used
Data input/output
Application
ADC reference power supply input terminal (L)
Driver MUTE
(Decoder) Resetting control
Not used.
0bit MUTE detection (Lch)
0bit MUTE detection (Rch)
(Decoder) BREQ signal input
(DSP) interruption signal input
(Decoder) SREQ signal output
Not used.
(Decoder) Data output for serial data
(Decoder) Data input for serial data
(Decoder) Clock output for serial data
(DSP) Data output for serial data
(DSP) Data input for serial data
(DSP) Clock output for serial data
ROM mode selection terminal
BU3.3V
Oscillator connection 26.88MHz
GND
Oscillator connection 26.88MHz
H-fixed
Reset detection
KDC-W8534/W8534Y
KDC-X790
Processing Operation
H : Reset (1.8V or higher), L : Normal
3.3V
Connect to GND
H : Light ON, Hi-Z : Light OFF
H : Light ON, Hi-Z : Light OFF
L : ON, Hi-Z : OFF
2.5V
Connect to GND
3.3V
Connect to GND
Processing Operation Description
GND
L : STOP, H : MUTE OFF
L : RESET, H : NORMAL
Open output L-fixed
L : MUTE OFF, H : MUTE ON
L : MUTE OFF, H : MUTE ON
H : Interruption
Open output L-fixed
H : NORMAL, L : External ROM mode
L : RESET H : NORMAL
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