Kenwood GX-204KE Service Manual page 9

QQ
MICROCOMPUTER'S TERMINAL DESCRIPTION
3 7 63 1515 0
e SRS mode switching
SRS_MODE1 SRS_MODE2 SRS_MODE3
47pin 48pin
L L
L L
L H
H L
H H
r REMOCON voltage table
MUTE
operation
TE
L 13942296513
0V
PANEL (AUDIO) MICROCOMPUTER: MB90562A-419E (X34-401: IC501)
Pin No. Pin Name
1 NC
2~5 KR3~KR6
6~9 KS1~KS4
10,11 NC
12 AVCC
13 AVR
14 AVSS
15 SP_DATA_S
16 SP_DATA_P
17 SP_REQ_P
www
18 SP_BKUP
19 MD0
.
20 SP_RST
21 MD1
Mode
49pin
L OFF
H 3D-Stereo
L TruBass
L FOCUS
H WOW
VOL+ VOL-
operation operation
1.18 1.40 1.65 1.95 2.21 2.56 2.71
I/O Application
O Not used
I Key scan pulse input terminal
O Key scan pulse output terminal
O Not used
Power supply input for A/D converter
REF voltage input for A/D converter
GND connection for A/D converter
Data from system µ-com → panel µ-com output
I
Data from panel µ-com → system µ-com output
O
Request from panel µ-com → system µ-com
O
Inputs voltage reduction from system µ-com detection
I
x ao
y
I For FLASH ROM writing
i
Reset input from system µ-com
I
I For FLASH ROM writing
8
MODE SEEK
operation operation
Q Q
3 6 7 1 3
3.11 3.26 3.70 3.78
Output L fixed
Output L fixed
VCC
SW_5V potential
GND potential
Communication speed 19200bps, 50ms interval
Communication speed 19200bps, 20ms interval
L: Momentary power down detected, H: Normal
u163
Hi: Normal mode, Lo: FLASH writing mode
.
Reset request from system µ-com Lo
Hi: Normal and FLASH writing mode, Lo: Not set-up
GX204KEF2/KHF2/LEF2
GX204REF2/SEF2
2 9 9 4 2 8
SEEK No
operation operation
1 5 0 5 8 2 9 9 4
4.25 4.46 4.95
5V
Processing Operation Description
m
co
9 9
2 8 9 9
9