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AT89C51ID2-RDTIM Datasheet(PDF) 92 Page - ATMEL Corporation |
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AT89C51ID2-RDTIM Datasheet(HTML) 92 Page - ATMEL Corporation |
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92 / 159 page  92 AT89C51ID2 4289A–8051–09/03 Table 67. Status in Slave Receiver Mode Status Code (SSCS) Status of the 2-wire bus and 2-wire hardware Application Software Response Next Action Taken By 2-wire Software To/from SSDAT To SSCON STA STO SI AA 60h Own SLA+W has been received; ACK has been returned No SSDAT action or No SSDAT action X X 0 0 0 0 0 1 Data byte will be received and NOT ACK will be returned Data byte will be received and ACK will be returned 68h Arbitration lost in SLA+R/W as master; own SLA+W has been received; ACK has been returned No SSDAT action or No SSDAT action X X 0 0 0 0 0 1 Data byte will be received and NOT ACK will be returned Data byte will be received and ACK will be returned 70h General call address has been received; ACK has been returned No SSDAT action or No SSDAT action X X 0 0 0 0 0 1 Data byte will be received and NOT ACK will be returned Data byte will be received and ACK will be returned 78h Arbitration lost in SLA+R/W as master; general call address has been received; ACK has been returned No SSDAT action or No SSDAT action X X 0 0 0 0 0 1 Data byte will be received and NOT ACK will be returned Data byte will be received and ACK will be returned 80h Previously addressed with own SLA+W; data has been received; ACK has been returned No SSDAT action or No SSDAT action X X 0 0 0 0 0 1 Data byte will be received and NOT ACK will be returned Data byte will be received and ACK will be returned 88h Previously addressed with own SLA+W; data has been received; NOT ACK has been returned Read data byte or Read data byte or Read data byte or Read data byte 0 0 1 1 0 0 0 0 0 0 0 0 0 1 0 1 Switched to the not addressed slave mode; no recognition of own SLA or GCA Switched to the not addressed slave mode; own SLA will be recognised; GCA will be recognised if GC=logic 1 Switched to the not addressed slave mode; no recognition of own SLA or GCA. A START condition will be transmitted when the bus becomes free Switched to the not addressed slave mode; own SLA will be recognised; GCA will be recognised if GC=logic 1. A START condition will be transmitted when the bus becomes free 90h Previously addressed with general call; data has been received; ACK has been returned Read data byte or Read data byte X X 0 0 0 0 0 1 Data byte will be received and NOT ACK will be returned Data byte will be received and ACK will be returned |
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