Samsung SCX-1150F Repair Manual

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3-31Samsung ElectronicsCIRCUIT DESCRIPTIONRepair Manual3-7 THUNDERBOLT ASIC description3-7-1 Entire descriptionTHUNDERBOLT ASIC is configured with SERIAL INTERFACE INPUT PORT interfacing Main controller, 2 DC-DC ConverterControllers, Power On Reset Generation Circuit, and Motor drive part.3-7-2 THUNDERBOLT FUNCTION DESCRIPTION3-7-2-1 SERIAL INTERFACE INPUT PORTTo MAIN CONTROLLER(S3C46MOX(Jupiter3)), /TBCS,TBCLK,TBDO are connected with MAIN CONTROLLER (S3C46MOX(Jupiter3)), and see the figure for Timing./ TBCSTBCLKTBDOTcs-sclkTcs-sclkbit 1 bit 2 bit 3 bit 4 bit 5 bit 6 bit 7 bit 8 bit 9 bit 10 bit 11 bit 12 bit 13 SDI stays atlast valueMSBLSBData Latcked on the rising edge of SCLKtimeTdhdTdsu< Figure 21. SERIAL INTERFACE INPUT Timing Diagram >Parameter Description Min Typ Max UnitsFclk Serial clock frequency 2.5 4 MHzTclh SCLK high width 125 200 - nsecTcll SCLK low width 125 200 - nsecTcs-sclk Delay nCS falling to first SCLK rising 250 800 - nsecTsclk-cs Delay last SCLK rising edge to nCS rising 250 400 - nsecTdsu Data valid to SCLK set up time 125 200 - nsecTdhd Data hold time 125 200 - nsecTrd SDI rise time 5 20 nsecTfd SDI fall time 5 20 nsecTrc SCLK rise time 5 20 nsecTfc SCLK fall time 5 20 nsec< Figure 21-1. SERIAL INTERFACE INPUT Timing Specification >