Silicon Laboratories C8051F12 Series Manual page 271

C8051F120/1/2/3/4/5/6/7 C8051F130/1/2/3
Table 19.1. SMB0STA Status Codes and States (Continued)
Status
Mode
Code
0x60 Own slave address + W received. ACK trans-
mitted.
0x68 Arbitration lost in sending SLA + R/W as mas-
ter. Own address + W received. ACK transmit-
ted.
0x70 General call address received. ACK transmit-
ted.
0x78 Arbitration lost in sending SLA + R/W as mas-
ter. General call address received. ACK trans-
mitted.
0x80 Data byte received. ACK transmitted.
0x88 Data byte received. NACK transmitted.
0x90 Data byte received after general call address.
ACK transmitted.
0x98 Data byte received after general call address.
NACK transmitted.
0xA0 STOP or repeated START received.
0xA8 Own address + R received. ACK transmitted.
0xB0 Arbitration lost in transmitting SLA + R/W as
master. Own address + R received. ACK
transmitted.
0xB8 Data byte transmitted. ACK received.
0xC0 Data byte transmitted. NACK received.
0xC8 Last data byte transmitted (AA=0). ACK
received.
0xD0 SCL Clock High Timer per SMB0CR timed out
0x00 Bus Error (illegal START or STOP)
0xF8 Idle
SMBus State
Rev. 1.4
Typical Action
Wait for data.
Save current data for retry when bus is
free. Wait for data.
Wait for data.
Save current data for retry when bus is
free.
Read SMB0DAT. Wait for next byte or
STOP.
Set STO to reset SMBus.
Read SMB0DAT. Wait for next byte or
STOP.
Set STO to reset SMBus.
No action necessary.
Load SMB0DAT with data to transmit.
Save current data for retry when bus is
free. Load SMB0DAT with data to trans-
mit.
Load SMB0DAT with data to transmit.
Wait for STOP.
Set STO to reset SMBus.
Set STO to reset SMBus.
Set STO to reset SMBus.
State does not set SI.
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