Clarion DXZ955MC Service Manual page 7

051-7287-90 CD74HC4049PWR
052-3400-00 uPD703275YGJ-503-UEN
Terminal Description
pin 1: A Vref 0 : - : Reference voltage for the internal ADC.
pin 2: A VSS : - : Negative voltage supply for analog section.
pin 3: SYS ACC : O : ACC detect signal output.
pin 4: SYS MUTE : O : System muting signal output.
pin 5: A Vref 1 : - : Reference voltage for the internal ADC.
pin 6: RDS CLK : IN : RDS clock pulse input.
pin 7: NU : IN : Not in use.
pin 8: FLASH MD 0 : IN : H = The flash memory writing.
pin 9: VDD : - : Positive voltage supply.
pin 10: REG C : - : The capacitor connection.
pin 11: VSS : - : Negative voltage supply.
pin 12: X 1 : - : The crystal connection.
pin 13: X 2 : IN : The crystal connection.
pin 14: RESET : IN : Reset signal input.
pin 15: XT 1 : - : Crystal connection.
pin 16: XT 2 : - : Crystal connection.
pin 17: ILL DET : IN : Illumination ON signal input.
pin 18: B/U DET 2 : IN : The backup voltage detect pulse input.
pin 19: B/U DET : IN : Backup voltage ON signal input.
pin 20: NU : IN : Not in use.
pin 21: ACC IN : IN : ACC ON flag input.
pin 22: TUN SDA :I/O: I2BUS serial data input/output for the tun-
er pack.
pin 23: TUN SCL : O : I2BUS serial clock output for the tuner
pack.
pin 24: TP REQ : IN : The request signal from the touch panel
micro computer.
pin 25: FLASH TX : O : The serial data output for the flash mem-
ory.
pin 26: FLASH RX : IN : The serial data input for the flash memo-
ry.
pin 27: TP RESET : O : The reset pulse output to the touch panel.
pin 28: NU : IN : Not in use.
pin 29: SPEED PULSE : IN : The speed pulse input.
pin 30: NU : IN : Not in use.
pin 31: IE BUS TX : O : IE Bus serial data output.
pin 32: IE BUS RX : IN : IE Bus serial data input.
pin 33: E VSS : - : Ground.
pin 34: E VDD : - : The positive supply voltage.
pin 35: T-DSP SDA :I/O: I2BUS serial data input/output for the Ra-
dio-Audio-DSP.
pin 36: T-DSP SCL : O : I2BUS serial clock output for the Radio-
Audio-DSP.
pin 37: MOTOR+ : O : The control signal output to the motor.
pin 38: MOTOR- : O : The control signal output to the motor.
pin 39: LCD ILL REM : O : H = LCD back light ON.
pin 40: DISP 5V : O : The power supply ON signal output for the
LCD driver.
pin 41: OFFSET DET : IN : The emergency signal input from the pow-
er IC.
pin 42: OSD WAIT : IN : The wait signal input for the on screen dis-
play IC.
pin 43: OSD CD 0 :I/O: The parallel data input/output for the on
screen display.
pin 44: OSD CD 1 :I/O: The parallel data input/output for the on
screen display.
pin 45: OSD CD 2 :I/O: The parallel data input/output for the on
screen display.
pin 46: OSD CD 3
Hex Inverter
pin 47: OSD CD 4
pin 48: OSD CD 5
pin 49: OSD CD 6
pin 50: OSD CD 7
pin 51: OSD RD
pin 52: OSD WR
System Controller
pin 53: REMOCON IN
pin 54: OSD CS
pin 55: OSD PS 2
pin 56: OSD PS 1
pin 57: OSD PS 0
pin 58: OSD RST
pin 59: TP RX
pin 60: TP TX
pin 61: E VOL DATA
pin 62: E VOL CLK
pin 63: MP3 SRQ
pin 64: MP3 CS
pin 65: MP3 WP
pin 66: MP3 RESET
pin 67: BEEP
pin 68: MP3 SI
pin 69: MP3 SO
pin 70: MP3 SCK
pin 71: EXT AMP REM : O : ON signal output to the external Amplifier.
pin 72: INT AMP REM : O : ON signal output to the internal Amplifier.
pin 73: AMP MUTE
pin 74: KEY INT
pin 75: OSD INT 0
pin 76: NU
pin 77: TFT DD F SW 1 : O:
pin 78: DD F SW
pin 79: REM +5V
pin 80: MAIN 0 BIT
pin 81: NU
pin 82: NU
pin 83: NU
pin 84: NU
pin 85: EEP DO
pin 86: CLK out
pin 87: EEP SCK
pin 88: EEP CEO
pin 89: EEP DI
pin 90: NU
pin 91: DSP 2 Request : O : The request signal output to DSP-2.
pin 92: DSP 2 SCK
pin 93: DSP 2 SO
pin 94: NU
pin 95: DSP 2 RDY
pin 96: DSP 2 RESET : O : The reset pulse output to DSP-2.
pin 97: DSP 2 INI RST : O : The initial reset signal output to DSP-2.
pin 98: NU
- 7 -
:I/O: The parallel data input/output for the on
screen display.
:I/O: The parallel data input/output for the on
screen display.
:I/O: The parallel data input/output for the on
screen display.
:I/O: The parallel data input/output for the on
screen display.
:I/O: The parallel data input/output for the on
screen display.
: O : The read command output for the on
screen display IC.
: O : The write command output for the on
screen display IC.
: IN : The input terminal of the internal ADC for
the remote controller.
: O : The chip select signal output to the on
screen display IC.
: O : On screen display port select.
: O : On screen display port select.
: O : On screen display port select.
: O : The reset pulse output for the on screen
display IC.
: IN : The serial data input from the touch panel
micro computer.
: O : The serial data output to the touch panel
micro computer.
: O : The serial data output to the volume IC.
: O : The clock pulse output to the volume IC.
: IN : MP3 request signal input.
: O : MP3 chip selection signal output.
: O : MP3 wakeup signal output.
: O : MP3 reset signal output.
: O : Beep out.
: IN : MP3 serial data input.
: O : MP3 serial data output.
: O : MP3 clock output.
: O : Muting signal output to the Audio Power
Amplifier.
: IN : Key interrupting signal input.
: IN : The interrupt signal (vertical) input for the
on screen display.
: IN : Not in use.
The DC-DC-converter-control-signal output-
terminal for the TFT driving. When the-
switching-frequency is out of the standard
frequency range, this terminal outputs L.
: O : The frequency control signal output for
DC_DC_Converter.
: O : Power supply circuit control signal. "H"=
ON.
: O : H = 0 bit muting active.
: IN : Not in use.
: IN : Not in use.
: IN : Not in use.
: IN : Not in use.
: O : The serial data output to the EEP-ROM.
: O : Clock pulse output.
: O : The clock pulse output to the EEP-ROM.
: O : The chip enable signal output to the EEP-
ROM.
: IN : The serial data input from the EEP-ROM.
: IN : Not in use.
: O : The clock pulse output to DSP-2.
: O : The serial data output to DSP-2.
: IN : Not in use.
: IN : The ready signal input to DSP-2.
: IN : Not in use.
DXZ955MC
DXZ956MC