Sanyo VPC-S1 Service Manual

Also see for Xacti VPC-S1: Service manual Instruction manual

Contents

– 7 –47 /DC_IN ISee next page →1-4. SYA CIRCUIT DESCRIPTION1. Configuration and FunctionsFor the overall configuration of the SYA block, refer to the block diagram. The SYA block centers around a 8-bit microprocessor(IC301), and controls camera system condition (mode).The 8-bit microprocessor handles the following functions.1. Operation key input, 2. Clock control and backup, 3. Power ON/OFF, 4. Storobe charge control, 5. Signal input and output forzoom and lens control.Pin Signal1~4567891011121415161718192021222330323334353637383940414243454446/SCAN OUT 0~3P ONPA ONBL_ONLCD_ONVSSVDD/SELF LED/STBY_LED (GREEN)/AVREF_ONSISOSCKPRG SIPRG SOPRG SCKNOT USEDNOT USEDCHG ONNOT USEDCHG VOLBATTERYAVREFAVDD/RESETXCOUTXCINICXOUTXINVSS/BAT OFF/SREQ/SCAN IN3SUB 1I/OOOOOO--OOOIOI/OIOI/O--O-II--IOIIOI-IIIIOutlineKey scan outputDigital power ON/OFF control H : ONAnalog power ON/OFF control H : ONLCD backlight ON/OFF control H : ONLCD power ON/OFF control H : ONGNDVDDStand-by LED (green) control L : ONA/D converter standard voltage control L : ONReceiving data (from ASIC)Sending data (to ASIC)Communication clock (to ASIC)Flash memory writing receiving dataFlash memory writing sending dataFlash memory writing communication clock---Storobe charge voltage detection (analog input)Battery voltage detection (analog input)Analog standard voltage input terminalA/D converter analog power terminalReset inputClock oscillation terminal (37.768 kHz)Clock oscillation terminalFlash memory writing voltageMain clock oscillation terminal (4MHz)Main clock oscillation terminalGNDBattery OFF detectionSerial communication requirement (from ASIC)Key scan input 6Command input (from ASIC)DC jack/battery detection inputFlash charge control H : ON13 /STBY_LED (RED) O Stand-by LED (red) control L : ON24 VDD - VDD25 AVSS - AVSS27~29 SCAN IN 0~2 I Key scan inputSelf LED (red) control L : ON31 NOT USED - -26 NOT USED - -