GX-201KEF2/LEF2/REF2/SEF2
MICROCOMPUTEROS TERMINAL DESCRIPTION
Pin No.Pin NameI/OApplicationProcessing Operation Description
43,44NCONot used, Open
Detect IGN signal. Lo : Communication permitted,
45IGN_DETIExternal interruption 0 (IGN signal)
Hi : Communication prohibited
External interruption 1Breakup condition output from Audio.
46SC_BKUPI
(Power supply breakup signal)Hi : Breakup recovery, Lo : Breakup occurrence
47MD0IUsed when writing to flash ROMHi : Normal mode, Lo : FLASH writing mode
48MD1IUsed when writing to flash ROMHi : Normal and FLASH writing mode, Lo : No setting
49MD2IUsed when writing to flash ROMHi : FLASH writing mode, Lo : Normal mode
50HSTIL : Hardware standby conditionVCC
51,52NCONot used, Open
As audio communication permission signal, judgment on
53SC_CONIExternal interruption 4 (Audio SC-CON signal) start/stop is made as external interruption from audio.
Hi : Occurrence of interruption, Lo : Port sampling
Audio key stop mode return.
54KR0_AIExternal interruption 5 (Interruption key RET0)
In stop mode, Lo : Occurrence of interruption, Other : Prohibition
Audio key stop mode return.
55KR1_AIExternal interruption 6 (Interruption key RET1)
In stop mode, Lo : Occurrence of interruption, Other : Prohibition
56NCONot used, Open
57SC_DATA INI Audio system ?-com communicationCommunication interface with Audio system ?-com (Reception).
(Reception)Reception data is display data.
58MC_DATA IN OAudio system ?-com communicationCommunication interface with Audio system ?-com (Transmission).
(Transmission)Trans mission data is key data and CAN data.
Beginning communication with Asystem udio ?-com.
59MC_REQOAudio MC_REQ signal
Output stopped after recognizing SC-CON signal.
60AVFD_LATOAudio VFD tube LAT signalAudio FL tube display data LAT signal
61NCONot used, Open
62HVFD_CSOHeater VFD tube chip select signalWhen chip select (Lo) is output, signal transmission data is effective
63NCONot usedPull down (When built-in ROM is flash memory)
64NCINot usedPull down (When built-in ROM is flash memory)
Stopped (L) : Power supply OFF,
65HVFD_ONOHeater VFD power supply ON signal
Normal operation (H) : Power supply ON
66,67NCONot used, Open
Audio FL tube brightness is adjusted with Hi/Lo duty ratio.
68AVFD_BLKOAudio VFD tube brightness adjustBrightness info is variable b?-com with they the Audio system
illumination brightness data. Duty ratios are of 16 types
69~74NCONot used, Open
75SC_RSTICPU reset signal
76NCONot used, Open
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