9
GX-201KHF2/LHF2/RHF2/SHF2
Pin No.
Pin Name
I/O
Application
Processing Operation Description
43,44
NC
O
Not used, Open
45
IGN_DET
I
External interruption 0 (IGN signal)
Detect IGN signal. Lo : Communication permitted,
Hi : Communication prohibited
46
SC_BKUP
I
External interruption 1
Breakup condition output from Audio.
(Power supply breakup signal)
Hi : Breakup recovery, Lo : Breakup occurrence
47
MD0
I
Used when writing to flash ROM
Hi : Normal mode, Lo : FLASH writing mode
48
MD1
I
Used when writing to flash ROM
Hi : Normal and FLASH writing mode, Lo : No setting
49
MD2
I
Used when writing to flash ROM
Hi : FLASH writing mode, Lo : Normal mode
50
HST
I
L : Hardware standby condition
VCC
51,52
NC
O
Not used, Open
As audio communication permission signal, judgment on
53
SC_CON
I
External interruption 4 (Audio SC-CON signal)
start/stop is made as external interruption from audio.
Hi : Occurrence of interruption, Lo : Port sampling
54
KR0_A
I
External interruption 5 (Interruption key RET0)
Audio key stop mode return.
In stop mode, Lo : Occurrence of interruption, Other : Prohibition
55
KR1_A
I
External interruption 6 (Interruption key RET1)
Audio key stop mode return.
In stop mode, Lo : Occurrence of interruption, Other : Prohibition
56
NC
O
Not used, Open
57
SC_DATA IN
I
Audio system
µ
-com communication
Communication interface with Audio system
µ
-com (Reception).
(Reception)
Reception data is display data.
58
MC_DATA IN
O
Audio system
µ
-com communication
Communication interface with Audio system
µ
-com (Transmission).
(Transmission)
Trans mission data is key data and CAN data.
59
MC_REQ
O
Audio MC_REQ signal
Beginning communication with Audio system
µ
-com.
Output stopped after recognizing SC-CON signal.
60
AVFD_LAT
O
Audio VFD tube LAT signal
Audio FL tube display data LAT signal
61
NC
O
Not used, Open
62
HVFD_CS
O
Heater VFD tube chip select signal
When chip select (Lo) is output, signal transmission data is effective
63
NC
O
Not used
Pull down (When built-in ROM is flash memory)
64
NC
I
Not used
Pull down (When built-in ROM is flash memory)
65
HVFD_ON
O
Heater VFD power supply ON signal
Stopped (L) : Power supply OFF,
Normal operation (H) : Power supply ON
66,67
NC
O
Not used, Open
Audio FL tube brightness is adjusted with Hi/Lo duty ratio.
68
AVFD_BLK
O
Audio VFD tube brightness adjust
Brightness info is variable by the Audio system
µ
-com with the
illumination brightness data. Duty ratios are of 16 types
69~74
NC
O
Not used, Open
75
SC_RST
I
CPU reset signal
76
NC
O
Not used, Open
MICROCOMPUTER’S TERMINAL DESCRIPTION
