Kenwood KRF-V7773D Service Manual

Also see for KRF-V7773D: User guide Instruction manual Connect and set up Service manual

Contents

KRF-V7773D/V7773D-B/V9993D11CIRCUIT DESCRIPTIONNo. Pin Name I/O Description1 SUB_MUTE O Sub Microcomputer Analog Mute2 DAIN_MUTE I DAC Input Mute3 NC I Unused4 PCM ZERO I PCM Zero Data Detection(KPCM)5 D.R.I.V.E. O DSP DRIVE/HDCD Control(KPCM) L: DRIVE/HDCD on6 HDCD_6dB I DSP HDCD +6dB Detection7 OVER_LEVEL I DSP Over Level Detection8 DTS_SENS I DSP DTS Header Detection(KPCM)9 MUTE O DSP Mute Control0 HDCD I DSP HDCD Signal Detection1 BUSY I DSP Status BUSY2 DSP_RESET O DSP IC Reset3 RD/WR O DSP RD/WR4 REQ O DSP REQ5 ACK I DSP ACK43 DATA_7-0 I/O DSP DATA_7-04 NC - Unused5 GND - Connected to GND6 TEST - Connected to GND7 MREQ I Main Computer Master Request8 SREQ O Main Computer Slave Request9 MCK I Main Computer Master Clock0 MDT I Main Computer Master Data1 SDT O Main Computer Slave Data2 Y_C_SEL_B O Y/C Select B3 Y_C_SEL_A O Y/C Select4 DAC96 O DAC Double speed sampling mode control5 VDD - +5V Power Supply58 DSEL_C-A O Digital Input Selector Control C-A9 CTRL_A2 O Video Selector Control A20 OPT_DET O OPTICAL Digital Input Detection (A/Din)1 AD_RESET O ADC Reset2 DAOUT_MUTE O DAC Output Mute3 DAC_PD O DAC Power Down65 VDD - +3.3V Power Supply6 GND - Connected to GND68 NC - Unused70 VCC +3.3V Power Supply1 - - Unused2 Y_DETECT I Y Detect3 ERF I DIR Error Flag4 AUTO I DIR Auto Data Detection5 FS96 I DIR fs 96kHz Detection6 CCLK O DIR Control Clock7 C_K_DETECT I C K Detection8 C_DETECT I C Detection9 CDTO I DIR Control Data Out0 CDTI O DIR Control Data In