Microcomputer’s Terminal Description - Kenwood GX-204KE Service Manual

GX204KEF2/KHF2/LEF2
GX204REF2/SEF2
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MICROCOMPUTER'S TERMINAL DESCRIPTION
3 7 63 1515 0
SYSTEM MICROCOMPUTER: 703037HYGM04A (X14: IC801)
Pin No. Pin Name
1 SP_DATA_S
2 TUN_SDA
3 NC
4 TUN_SCL
5 NC
6 SH_DATA_H
7 SH_DATA_S
8 CDX_MTS
9 EVDD
10 EVSS
11 BEEP
12 AM_BYPS
13 TEL_MUTE
13 NC
14 ILL_DET+
TE
L 13942296513
15 ILL_DET-
16 VOL_SDA
17 VOL_SCL
18~20 NC
21 IC/VPP
22~25 NC
26 BUS_DI
27 BUS_DO
28 CDX_RST
29 PON_5V
30 ON_REQ
31 SYS_ON
32 SYS_OFF
33 BUS_STBY
34 RESET
35,36 XT1, XT2
37 REGC
38,39 X2, X1
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40 VSS
41 VDD
.
42 CLKOUT
43 HARD_RESET
6
I/O Application
System µ-com → Panel µ-com data output
O
I/O F/E I2C data input/output terminal
O Not used
I/O F/E I2C clock output terminal
O Not used
HTR-C µ-com → System µ-com data output
I
System µ-com → HTR-C µ-com data output
O
O 6CD communication request output
5V potential
GND potential
O BEEP output
O D5V bypass power ON in AM
I TEL_MUTE request input (E type only)
O Not used (In other than E type)
I ILL+ detection
I ILL- detection (pulse input)
I/O E_VOL I2C data input/output
I/O E_VOL I2C clock output
O Not used
(FLASH writing)
O Not used
I Sie-BUS data IN
O Sie-BUS data OUT
O 6CD reset
O AVR control (Audio, MECHA)
I Sie-BUS ON request
O Sie-BUS ON output
O Sie-BUS OFF output
O BUS_IC standby control
System reset input
Sub system clock oscillator terminal
Main system clock oscillator terminal
- GND potential
x ao
y
- 5V potential
i
Not used
O Hardware reset output
8
Truth Value
Table
UART 19200bps
Output L fixed
Output L fixed
UART 4800bps
UART 4800bps
L: Communication request to 6CD, H: Other
3kHz BEEP output (pulse), L: Not active
H: AM, L: Other
L: TEL_MUTE request
Output L fixed
ILL ON: L
Q Q
H: ON, L: OFF, pulse input
3 6 7 1 3
Adjusts luminance with duty ratio.
Output L fixed
(FLASH writing)
Output L fixed
BUS data input
BUS data output
L: Reset, H: Other
L: Power ON, H: OFF (stable time 400m)
L: System ON request
L: System ON
L: System OFF
H: System ON
L: Reset, Reset voltage: 4.2V
Not used
12.582MHz
u163
.
H: Reset, L: Other
2 9 9 4 2 8
Processing Operation Description
1 5 0 5 8 2 9 9 4
m
co
9 9
2 8 9 9