EN-1286S-A
- 5 -
EXPLANATION OF IC
052-0315-00 M30879FLAGP Microcomputer
[ NOTE ]
When this IC is exchanged, it is necessary to write the program be-
cause the program is not written in this IC.
pin 1: NU : - : Not in use.
pin 2: IRI :IN: The remote control signal input.
pin 3: ST EEP SDA :I/O: Serial data input/output for the Sub-tuner
and the EEPROM.
pin 4: ST EEP CK : O : Serial clock output to the Sub-tuner and
the EEPROM.
pin 5: BU DET :IN: Backup detection signal input.
pin 6: BYTE :IN: Data length selection(8bit/16bit).
pin 7: CN VSS :IN: Connect to VSS via a resistor.
pin 8: NU : O : Not in use.
pin 9: SYS ON : O : System ON signal output.
pin 10: RESET :IN: Reset signal input.
pin 11: X out : O : Crystal connection.
pin 12: VSS : - : Negative voltage supply.
pin 13: X in :IN: Crystal connection.
pin 14: VCC : - : Positive voltage supply.
pin 15: NMI :IN: Nonmaskable interrupt. Connect to VDD
via a resistor.
pin 16: SYS ON IN :IN: System ON signal input.
pin 17: M CAN RX :IN: M-CAN serial data input.
pin 18: M CAN TX : O : M-CAN serial data output.
pin 19: PIC DIAG 1 :IN: Power IC diagnosis signal input.
pin 20: NDS RX :IN: NDS serial data input from NDS-A/C.
pin 21: NDS REQ :IN: The request pulse from NDS.
pin 22: NDS TX : O : NDS serial data output to NDS-A/C.
pin 23: PIC STND 1 : O : Power IC standby signal output.
pin 24: BEEP : O : Beep out.
pin 25: EXT AMP ON : O : ON signal output for the external amplifi-
er.
pin 26: NU : - : Not in use.
pin 27: MT SCK : O : Serial clock output to the Main-tuner.
pin 28: MT SDA :I/O: Serial data input/output for Main-tuner.
pin 29: DSP/P-IC CK : O : DSP/Power-IC clock pulse output.
pin 30: DSP/P-IC DA :I/O: DSP/Power-IC serial data input/output.
pin 31: FLASH CK :IN: Flash memory Clock.
pin 32: FLASH BUSY : O : Flash memory busy signal output.
pin 33: PIC STND 2 : O : Power IC standby signal output.
pin 34: NU : O : Not in use.
pin 35: NU : O : Not in use.
pin 36: PIC DIAG 2 :IN: Power IC diagnosis signal input.
pin 37: NU : O : Not in use.
pin 38: A DIAG ON : O : Diagnosis control signal output for the
external-amplifier-on-signal-line.
pin 39: FLASH EPM : O : Flash memory EPM.
pin 40: A DIAG C :IN: Open detection signal input for the exter-
nal-amplifier-on-signal-line.
pin 41: A DIAG S :IN: Short detection signal input for the exter-
nal-amplifier-on-signal-line.
pin 42: NU : O : Not in use.
pin 43: NU : O : Not in use.
pin 44: FLASH CE : O : Flash memory Chip enable.
pin 45: NU : O : Not in use.
pin 46: NU : O : Not in use.
pin 47: NU : O : Not in use.
pin 48: NU : O : Not in use.
pin 49: NU : O : Not in use.
pin 50: NU : O : Not in use.
pin 51: NU : O : Not in use.
pin 52: NU : O : Not in use.
pin 53: NU : O : Not in use.
pin 54: NU : O : Not in use.
pin 55: DSP INT :IN: Initial signal input from the DSP IC.
pin 56: MT MUTE : O : Main-tuner mute output.
pin 57: MT SAMPLE :IN : Main-tuner sample input.
pin 58: NU : O : Not in use.
pin 59: ST SAMPLE :IN : Sub-tuner sample input.
pin 60: VDD : - : Positive voltage supply.
pin 61: NU : O : Not in use.
pin 62: GND : - : Ground.
pin 63: ST HOLD :IN: AF-hold-signal input from the Sub-tuner.
And M-hold signal input from the DSP.
pin 64: ST S METER :IN: Input of internal A/D converter to monitor
the radio field strength for the Sub-tuner.
pin 65: NU : O : Not in use.
pin 66: DSP PAUSE :IN: DSP automatic mute control. L = mute on.
pin 67: MT HOLD :IN: AF-hold-signal input from the Main-tuner.
And S-hold signal input from the DSP.
pin 68: MT S METER :IN: Input of internal A/D converter to monitor
the radio field strength for the Main-tun-
er.
pin 69: NU : O : Not in use.
pin 70: RDS DA 2 :IN: RDS 2 serial data input. (Sub-tuner)
pin 71: RDS CL 3 :IN: RDS 3 serial clock input. (TMS)
pin 72: RDS CL 2 :IN: RDS 2 serial clock input. (Sub-tuner)
pin 73: RDS CL 1 :IN: RDS 1 serial clock output. (Main-tuner)
pin 74: RDS DA 1 :IN: RDS 1 serial data input. (Main-tuner)
pin 75: RDS DA 3 :IN: RDS 3 serial data input. (TMS)
pin 76: M AGC DET :IN: Main-tuner AGC detection.
pin 77: S AGC DET :IN: Sub-tuner AGC detection.
pin 78: DSP RESET : O : Reset signal output to the DSP IC.
pin 79: NU : O : Not in use.
pin 80: NU : O : Not in use.
pin 81: NU : O : Not in use.
pin 82: NU : O : Not in use.
pin 83: NU : O : Not in use.
pin 84: RT N OFF : O : Noise clear signal output to the TMC-tun-
er.
pin 85: RT NOISE :IN: Input terminal of the internal ADC to
sense the RDS-noise-level from the TMC-
tuner.
pin 86: RT S METER :IN: Input terminal of internal A/D converter to
monitor the radio field strength for the
TMC-tuner.
pin 87: PHA ON 1 : O : Phantom circuit ON signal output for An-
tenna-1.
pin 88: STBY : O : The standby signal output.
pin 89: WAR :IN: Warning signal input from DIAGNOSTIC
PROCESSOR.
pin 90: PHA ON 2 : O : Phantom circuit ON signal output for An-
tenna-2.
pin 91: PHA DIAG B 1 :IN: Phantom power supply line short detection
signal input.
pin 92: P/L : O : The resistance changing-signal output for
the diagnosis IC.
pin 93: PHA DIAG B 2 :IN: Phantom power supply line short detection
signal input.
pin 94: A VSS : - : Analog ground.
pin 95: INFO AUX IN :IN: 0V="+B", 3V="Open", 5V="Ground"
pin 96: Vref : - : Reference voltage.
pin 97: A VCC : - : Positive voltage supply for the internal
analog section.
pin 98: DIAG TMC CK : O : Diagnosis & TMC serial clock output.
pin 99: DIAG TMC DA :I/O:Diagnosis & TMC serial data input/output.
pin100: TUNER ON : O : The tuner ON signal output.
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