– 8 –1-5. 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.See next pagePin Signal I/O Outline123456789111213141516171819202426272829303132333435363739413840SCKBACKUP_CTLBAT_CHG ONDC INLCD PWMTSEN_CLKBR MOTOR +BR MOTOR –VDD2CHG_LEDSELF_LEDTH ONBR PI ONAV JACKHOT LINESCAN IN0CHGERRUSB CONNECTSCAN IN1BR DET SWMAIN RESETPRG ENA/DATA1AVREF ONTSEN_LEDCARDPLLENSCAN OUT 2SCAN OUT 1SCAN OUT 0VSS3VDD3(DBGP2)(DBGP1/CLK)(DBGP0/DATA0)P ONBAT_CHG_CNTOOOIOOOO-OOOOIIIIIIIOIOOIOOOO--IOOOOSerial clock outputBackup battery charging controlCamera charging controlDC JACK detectionLCD backlight brightness adjustmentTouch sensor clock (66 kHz)Barrier motor control +Barrier motor control –VDDCharge LED (L= lighting)Self timer LED (L= lighting)Battery temperature detection power control (L= ON)Barrier motor PI power ON/OFFAV JACK detectionHot line request from ASICKeymatrix inputCamera charging error detectionUSB power detection terminal (L= detection)Barrier motor detection switchSystem reset (MRST)Flash rewrite select terminalAD VREF ON/OFF signal (L= ON)Touch sensor LED (H= lighting)Card detectionPLL oscillation ON/OFFKey matrix outputKey matrix outputKey matrix outputGNDVDD(Terminal for debugger)(Terminal for debugger)(Terminal for debugger)D/D converter (digital system) ON/OFF signalCharging currrent controlKey matrix input10 VSS2 - GND21 SCAN IN2 I Key matrix input22 SCAN IN3 I Key matrix input23 NOT USED O -25 ST_CHG ON O Strobo charging control42 COMREQ/ZBOOT I Command request input (combined with BOOT output)