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MICROCOMPUTER'S TERMINAL DESCRIPTION
3 7 63 1515 0
Pin No.
Pin Name
43,44
NC
45
IGN_DET
46
SC_BKUP
47
MD0
48
MD1
49
MD2
50
HST
51,52
NC
53
SC_CON
54
KR0_A
55
KR1_A
TE
L 13942296513
56
NC
57
SC_DATA IN
58
MC_DATA IN
59
MC_REQ
60
AVFD_LAT
61
NC
62
HVFD_CS
63
NC
64
NC
65
HVFD_ON
66,67
NC
68
AVFD_BLK
www
69~74
NC
75
SC_RST
.
76
NC
I/O
Application
O
Not used, Open
I
External interruption 0 (IGN signal)
External interruption 1
I
(Power supply breakup signal)
I
Used when writing to flash ROM
I
Used when writing to flash ROM
I
Used when writing to flash ROM
I
L : Hardware standby condition
O
Not used, Open
I
External interruption 4 (Audio SC-CON signal)
I
External interruption 5 (Interruption key RET0)
I
External interruption 6 (Interruption key RET1)
O
Not used, Open
Audio system µ-com communication
I
(Reception)
Audio system µ-com communication
O
(Transmission)
O
Audio MC_REQ signal
O
Audio VFD tube LAT signal
O
Not used, Open
O
Heater VFD tube chip select signal
O
Not used
I
Not used
O
Heater VFD power supply ON signal
O
Not used, Open
O
Audio VFD tube brightness adjust
O
Not used, Open
x
ao
y
I
CPU reset signal
i
O
Not used, Open
GX-201KEF2/LEF2/REF2/SEF2
8
Detect IGN signal. Lo : Communication permitted,
Hi : Communication prohibited
Breakup condition output from Audio.
Hi : Breakup recovery, Lo : Breakup occurrence
Hi : Normal mode, Lo : FLASH writing mode
Hi : Normal and FLASH writing mode, Lo : No setting
Hi : FLASH writing mode, Lo : Normal mode
VCC
As audio communication permission signal, judgment on
start/stop is made as external interruption from audio.
Hi : Occurrence of interruption, Lo : Port sampling
Audio key stop mode return.
In stop mode, Lo : Occurrence of interruption, Other : Prohibition
Audio key stop mode return.
In stop mode, Lo : Occurrence of interruption, Other : Prohibition
Q Q
3
6 7
1 3
Communication interface with Audio system µ-com (Reception).
Reception data is display data.
Communication interface with Audio system µ-com (Transmission).
Trans mission data is key data and CAN data.
Beginning communication with Audio system µ-com.
Output stopped after recognizing SC-CON signal.
Audio FL tube display data LAT signal
When chip select (Lo) is output, signal transmission data is effective
Pull down (When built-in ROM is flash memory)
Pull down (When built-in ROM is flash memory)
Stopped (L) : Power supply OFF,
Normal operation (H) : Power supply ON
Audio FL tube brightness is adjusted with Hi/Lo duty ratio.
Brightness info is variable by the Audio system µ-com with the
illumination brightness data. Duty ratios are of 16 types
u163
.
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
11
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