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AT83SND2CMP3B Datasheet(PDF) 193 Page - ATMEL Corporation |
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AT83SND2CMP3B Datasheet(HTML) 193 Page - ATMEL Corporation |
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193 / 241 page  193 4341F–MP3–03/06 AT8xC51SND2C/MP3B Table 21-5. Status for Slave Receiver Mode with General Call Address Status Code SSSTA Status of the TWI Bus and TWI Hardware Application Software Response Next Action Taken by TWI Hardware To/From SSDAT To SSCON SSSTA SSSTO SSI SSAA 70h General call address has been received; ACK has been returned No SSDAT action 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 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. 90h Previously addressed with general call; data has been received; ACK has been returned Read data Byte 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. 98h Previously addressed with general call; data has been received; NOT ACK has been returned Read data Byte Read data Byte Read data Byte 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 recognized; GCA will be recognized if SSGC = 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 recognized; GCA will be recognized if SSGC = logic 1. A START condition will be transmitted when the bus becomes free. A0h A STOP condition or repeated START condition has been received while still addressed as slave No SSDAT action No SSDAT action No SSDAT action No SSDAT action 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 recognized; GCA will be recognized if SSGC = 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 recognized; GCA will be recognized if SSGC = logic 1. A START condition will be transmitted when the bus becomes free. |
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