Table of Contents
Advertisement
MICROCOMPUTER'S TERMINAL DESCRIPTION
Pin No.
Pin Name
I/O
43,44
NC
O
Not used, Open
45
IGN_DET
I
External interruption 0 (IGN signal)
External interruption 1
46
SC_BKUP
I
(Power supply breakup signal)
47
MD0
I
Used when writing to flash ROM
48
MD1
I
Used when writing to flash ROM
49
MD2
I
Used when writing to flash ROM
50
HST
I
L : Hardware standby condition
51,52
NC
O
Not used, Open
53
SC_CON
I
External interruption 4 (Audio SC-CON signal)
54
KR0_A
I
External interruption 5 (Interruption key RET0)
55
KR1_A
I
External interruption 6 (Interruption key RET1)
56
NC
O
Not used, Open
Audio system µ-com communication
57
SC_DATA IN
I
(Reception)
Audio system µ-com communication
58
MC_DATA IN
O
(Transmission)
59
MC_REQ
O
Audio MC_REQ signal
60
AVFD_LAT
O
Audio VFD tube LAT signal
61
NC
O
Not used, Open
62
HVFD_CS
O
Heater VFD tube chip select signal
63
NC
O
Not used
64
NC
I
Not used
65
HVFD_ON
O
Heater VFD power supply ON signal
66,67
NC
O
Not used, Open
68
AVFD_BLK
O
Audio VFD tube brightness adjust
69~74
NC
O
Not used, Open
75
SC_RST
I
CPU reset signal
76
NC
O
Not used, Open
Application
GX-201KHF2/LHF2/RHF2/SHF2
Processing Operation Description
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
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
9
Hide quick links:
Advertisement
Table of Contents
