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AT89C5131-RDTIL Datasheet(PDF) 105 Page - ATMEL Corporation |
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AT89C5131-RDTIL Datasheet(HTML) 105 Page - ATMEL Corporation |
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105 / 176 page ![]() 105 AT89C5131 4136B–USB–09/03 Table 80. Status for Master Receiver Mode Status Code (SSCS) Status of the TWI Bus and TWI Hardware Application Software Response Next Action Taken by TWI Software To/from SSDAT To SSCON STA STO SI AA 08h A START condition has been transmitted Load SLA+R X 0 0 X SLA+W will be transmitted; ACK will be transmitted 10h A repeated START condition has been transmitted Load SLA+R or Load SLA+W X X 0 0 0 0 X X SLA+W will be transmitted; ACK will be transmitted SLA+W will be transmitted Logic will switched to master transmitter mode 38h Arbitration lost in SLA+R or NOT ACK bit No SSDAT action or No SSDAT action 0 1 0 0 0 0 X X TWI bus will be released and not addressed slave mode will be entered A START condition will be transmitted when the bus becomes free 40h SLA+R has been transmitted; ACK has been received No SSDAT action or No SSDAT action 0 0 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 48h SLA+R has been transmitted; NOT ACK has been received No SSDAT action or No SSDAT action or No SSDAT action 1 0 1 0 1 1 0 0 0 X X X Repeated START will be transmitted STOP condition will be transmitted and STO flag will be reset STOP condition followed by a START condition will be transmitted and STO flag will be reset 50h Data byte has been received; ACK has been returned Read data byte or read data byte 0 0 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 58h Data byte has been received; NOT ACK has been returned Read data byte or Read data byte or Read data byte 1 0 1 0 1 1 0 0 0 X X X Repeated START will be transmitted STOP condition will be transmitted and STO flag will be reset STOP condition followed by a START condition will be transmitted and STO flag will be reset |
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