Sharp A260 Service Manual - Page 37

(3) Panel control block The following controls are performed by the SCE214V. • Operation panel key scanning • Operation panel LCD display (4) Mechanism/recording control block • Recording control block diagram (1) OPERATOR PANEL, KEYPAD, LEDS & LCD OPO[7:0]* OPI[3:0]* LEDCTL* LCDCS* PRINTER DATA CONTROL & SENSORS STRB[3:0] STRBPOL THADI PDAT PCLK PLAT PRINTER & SCANNER MOTOR DRIVERS PM[3:0]* SM[3:0]* SCANNER CONTROLS & SENSORS START CLK2 CLK1 CLK1N SCE214V 1-CHIP FAX ENGINE UX-A260U TEST[1:0] BATRSTN RESETN TONE ALTTONE TSTCLK REGDMA WAITN SYNC PWRDWNN INTPWRDWNEN XIN XOUT RTC CRYSTAL SXIN SXOUT SYSCLK CRYSTAL INTERNAL IA RXIN TXOUT TELEPHONE LINE LINE INTERFACE SCANNER VIDEO PREPROCESSING VIDCTL[1:0] VIN VREFP VREFN IVREFP IVREFN SERIAL SYNC PORTS (SSIF) SSCLK[2:1]* SSTXD[2:1]* SSRXD[2:1]* SSSTAT[2:1]* GENERAL PURPOSE I/O GPIO SYNC/ASYNC SERIAL PORT SASIF SASCLK* SASTXD* SASRXD* A[23:0] D[7:0] RDN WRN ROMCSN CS[5:0]N* WRPROTN FRDN* FRWN* FCLE* FCSN[2:0] DEBUGN VDD VDRAM VBAT VSS ADVA ADGA EXTERNAL BUS RDN, ROMCSN CAS[0,1]N, RASN, DWRN CS3N, CS4N** D7[7:0] FLASH MEMORY (OPTION) FLASH ROM DRAM NOTES: * ALTERNATIVE GPO, GPI OR GPIO LINES **FOR SAMSUNG NAND-TYPE FLASH Fig. 4 5 - 9