Kawasaki 80C152, 80C51 technical specifications Kawasaki LSI USA, Inc Ver .9 KS152JB2

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KS152JB Universal Communications Controller Technical Specifications

data. The receive FIFO is a three byte buffer into which the receive data is loaded. A CPU read of the FIFO retrieves the oldest data and automatically updates the FIFO pointers. Setting GREN to a one will clear the receive FIFO. The status of this flag is controlled by the GSC. It is cleared if user empties receive FIFO.

RSTAT.3 (RDN) - Receive Done - If set, indicates the successful completion of a receiver opera- tion. Will not be set if a CRC, alignment, abort, or FIFO overrun error occurred. The status of this flag is controlled by the GSC.

RSTAT.4 (CRCE) - CRC Error - If set, indicates that a properly aligned frame was received with a mismatched CRC. The status of this flag is controlled by the GSC.

RSTAT.5 (AE) - Alignment Error - In CSMA/CD mode, AE is set if the receiver shift register (an internal serial-to-parallel converter) is not full and the CRC is bad when an EOF is detected. In CSMA/CD the EOF is a line idle condition (see LNI) for two bit times. If the CRC is correct while in CSMA/CD mode, AE is not set and any mis-alignment is assumed to be caused by drib- ble bits as the line went idle. In SDLC mode, AE is set if a non-byte-aligned flag is received. CRCE may also be set. The setting of this flag is controlled by the GSC.

RSTAT.5 (AE) - Alignment Error -In CSMA/CD mode, AE is set if the receiver shift register (an internal serial-to-parallel converter) is not full and the CRC is bad when an EOF is detected. In CSMA/CD the EOF is a line idle condition (see LNI) for two bit times. If the CRC is correct while in CSMA/CD mode, AE is not set and any mis-alignment is assumed to be caused by drib- ble bits as the line went idle. In SDLC mode, AE is set if a non-byte-aligned flag is received. CRCE may also be set. The setting of this flag is controlled by the GSC.

RSTAT.6 (RCABT) - Receiver Collision/Abort Detect - If set, indicates that a collision was detected after data had been loaded into the receive FIFO in CSMA/CD mode. In SDLC mode, RCABT indicates that 7 consecutive ones were detected prior to the end flag but after data has been loaded into the receive FIFO. AE may also be set. The setting of this flag is controlled by the GSC.

RSTAT.7 (OVR) - Overrun -If set, indicates that the receive FIFO was full and new shift register data was written into it. AE and/or CRCE may also be set. The setting of this flag is controlled by the GSC and it is cleared by user software.

SLOTTM (0BH) - Slot Time -Determines the length of the slot time used in CSMA/CD. A slot time equals (SLOTTM) X (1/ baud rate). A read of SLOTTM will give the value of the slot time timer but the value may be invalid as the timer is clocked asynchronously to the CPU. Loading SLOTTM with 0 results in 256 bit times.

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Ver. 0.9 KS152JB2

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Contents Introduction Technical Specifications PIN Description Pin DescriptionName Description Port Pin Name Alternate FunctionXTAL2 XTAL1RST Psen ALEEben EpsenSFR map for the cpu Special function RegistersReset Timing Reset Values of the SFRs Scon ConfigurationsSbuf Indeterminate Tmod PconPort bit I/O Pads Port 0 I/O Pad Port 2 I/O PadPorts 4,5 Psen Epsen ProgramComments Fetch viaTmod Timer/Counter Mode Control Register TIMER/COUNTERSMode Tcon Timer/Counter Control RegisterTimer/Counter in Mode IE Interrupt Enable Register Timer/Counter 0 in ModeInterrupts Priority Level Structure Pgste PDMA1 Pgstv PDMA0 Pgsre Pgsrv Egste EDMA1 Egstv EDMA0 Egsre EgsrvEX0 PX0Pgsrv Egsrv 2BHEDMA1 PDMA1PT1 ET1 1BHKawasaki LSI USA, Inc Ver .9 KS152JB2 Status of the External Pins during Idle and Power Down Power Down and IdleALE Psen Smod IDL Pcon Power Control RegisterLocal Serial Channel Controller Local Serial Port ModeSerial Port Mode Mode Load Sbuf Baud Rates Smod Timer 1 generated commonly used Baud ratesMHZ JNB SINGLE-STEP OperationReti Kawasaki LSI USA Inc Introduction Global Serial ChannelDC JAM CRC 11/IDLE CRC None11/IDLE Csma SdlcExternal clock Internal clock Control cpu Control dma Raw Receive Raw Transmit CSMA/CD Frame Format CSMA/CD OverviewPreamble BOF Address Info CRC EOF Kawasaki LSI USA, Inc Ver .9 KS152JB2 23 24 Interframe Space Manchester Encoding BIT Time CSMA/CD Data EncodingCollision Detection Jitter ToleranceMissing 0-to-1 Transition Narrow PulsesUnexpected 1-to-0 Transition GSC Inactive Resolution of CollisionsResponse to a Detected Collision What the GSC was doing TfifoDCR BackoffAlgorithm Prbs Tcdcnt Load Bkoff Slot Clock Myslot Random BackoffBKOFF= Myslot Deterministic Backoff Hardware Based Acknowledge Kawasaki LSI USA, Inc Ver .9 KS152JB2 BOF Address Control Info CRC EOF Sdlc Frame FormatKawasaki LSI USA, Inc Ver .9 KS152JB2 Nrzi BIT Time Data EncodingBIT STUFFING/STRIPPING Line Idle Sending Abort CharacterAcknowledgement Point-to-point Network PRIMARY/SECONDARY StationsMulti-Drop Network Ring NetworkHDLC/SDLC Comparison Using a Preamble in SdlcSdlc Hdlc User Defined ProtocolsPlanning for Network Changes and Expansions Line DisciplineDMA Servicing of GSC Channels Kawasaki LSI USA, Inc Ver .9 KS152JB2 Baud Rate Initialization External Driver Interface Test ModesJitter Receive Receive Sampling Rate Received Local Value Manchester Encoding BIT TimeBIT Time Received Transmit WaveformsCSMA/CD Clock Recovery Receiver Clock RecoveryExternal Clocking Determining Receiver ErrorsRcbat Crce Addressing2 CPU/DMA Control of the GSC Determining Line DisciplineCollisions and Backoff What the GSC was doing Response Successful Ending of Transmissions and Receptions GSC Register DescriptionsPL1 PL0 Length Bits GMOD84H Xtclk PL1 PL0Kawasaki LSI USA, Inc Ver .9 KS152JB2 ARB REQ Garen Xrclk Gfien IDL DCJ DCR SA5 SA4 SA3 SA2 SA1 SA0Rcabt Crce RDN Rfne Gren Haben Kawasaki LSI USA, Inc Ver .9 KS152JB2 LNI Noack Tcdt TDN Tfnf TEN DMA Kawasaki LSI USA, Inc Ver .9 KS152JB2 DMA with the 80C152 DMA OperationDMA Registers Burst Mode Alternate Cycle ModeDAS IDA SAS ISAExternal Demand Mode Serial Port Demand Mode12 OSC.PERIODS ALE Psen P1 Inst Float Timing DiagramsPCH P2 SFR DMA Cycle Resume Program Execution DMA Transfer from Internal Memory to Internal MemoryDMA Cycle 12 OSC. Periods Resume Program Execution ALE Psen 12 OSC. Periods ALE Psen Inst DMA Data OUT PCL Inst PCHDMA Cycle Resume Program Execution Arbiter Mode Request ModeHold/Hold Acknowledge ARB REQ Using the HOLD/HLDA AcknowledgeInternal Logic of the Arbiter ALE ARB If Hlda = ALE AEQ ALE REQDmxrq Internal Logic of the Requester DMA Arbitration Kawasaki LSI USA, Inc.oup, Inc Ver .9 KS152JB2 Kawasaki LSI USA, Inc Ver .9 KS152JB2 Kawasaki LSI USA, Inc Ver .9 KS152JB2 DMA Arbitration with Hold/Hold Ack DAS IDA SAS ISA Done Summary of DMA Control BitsInterrupt Structure IE0 ET1 EX1 ET0 EX0 TI+RIIPN1 PT1 PX1 PT0 PX0Transmit Error Flags Logic for Clearing TEN, Setting TDN GSC Transmitter Error ConditionsGSC Receiver Error Conditions Glossary Kawasaki LSI USA, Inc Ver .9 KS152JB2 DCON0/1 092H,093H Xtclk PL1 PL0 Kawasaki LSI USA, Inc 102 Ver .9 KS152JB2 Kawasaki LSI USA, Inc 103 Ver .9 KS152JB2 PT1 PX1 PT0 EX0 Myslot 0F5H DCJ DCR SA5 SA4 SA3 SA2 SA1 SA0 Smod ARB REQ Garen Xrclk Gfien IDL OVR Rcabt Crce RDN Rfne Gren Haben Kawasaki LSI USA, Inc 108 Ver .9 KS152JB2 TF1 TR1 TF0 TR0 IE1 IT1 IE0 IT0 SM0 SM1 SM2 REN TB8 RB8Gate Kawasaki LSI USA, Inc 111 Ver .9 KS152JB2 Stack Pointer PortData Pointer LOW DPL.7 DPL.6 DPL5 DPL.4 DPL.3 DPL.2 DPL.1 DPL.0Data Pointer High Timer ControlDPH.7 DPH.6 DPH.5 DPH.4 DPH.3 DPH.2 DPH.1 DPH.0 DPHGate Timer Timer Mode ControlTimer 0 LSB Timer 1 LSBTimer 1 MSB Timer 0 MSBSM0 Serial Port ControlSerial Data Buffer SBUF.7RS1 RS0 Program Status WordACC.7 ACC.6 ACC.5 ACC.4 ACC.3 ACC.2 ACC.1 ACC.0 AccumulatorKawasaki LSI USA, Inc 119 Ver .9 KS152JB2 Kawasaki LSI USA, Inc 120 Ver .9 KS152JB2
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