C8051F340-GQR Datasheet, PDF (204/276 Pages) Silicon Laboratories – Full Speed USB Flash MCU Family

C8051F340/1/2/3/4/5/6/7/8/9/A/B/C/D
Table 17.4. SMBus Status Decoding (Continued)
Values Read
Current SMbus State
Typical Response Options
Values
Written
0
0
0
A slave byte was transmitted;
NACK received.
No action required (expect-
ing STOP condition).
00X
0100
0
0
1
A slave byte was transmitted;
ACK received.
Load SMB0DAT with next
data byte to transmit.
00X
0
1
X
A Slave byte was transmitted;
error detected.
No action required (expect-
ing Master to end transfer).
00X
An illegal STOP or bus error was
0101 0 X X detected while a Slave Transmis- Clear STO.
sion was in progress.
00X
1
0
X
A slave address was received;
ACK requested.
Acknowledge received
address.
Do not acknowledge
received address.
001
000
0010
Acknowledge received
address.
001
Lost arbitration as master; slave Do not acknowledge
1 1 X address received; ACK
received address.
000
requested.
Reschedule failed transfer;
do not acknowledge received 1 0 0
address.
0010
0
1
X
Lost arbitration while attempting a ^{Abort failed transfer.}
repeated START.
Reschedule failed transfer.
00X
10X
1
1
X
Lost arbitration while attempting a No action required (transfer
STOP.
complete/aborted).
0
0
0
A STOP was detected while
0001 ^{0 0 X addressed as a Slave Transmitter Clear STO.}
or Slave Receiver.
00X
0
1
X
Lost arbitration due to a detected
STOP.
Abort transfer.
Reschedule failed transfer.
00X
10X
Acknowledge received byte;
1
0
X
A slave byte was received; ACK
requested.
Read SMB0DAT.
Do not acknowledge
0000
received byte.
0
0
0
0
1
0
1
1
X
Lost arbitration while transmitting
a data byte as master.
Abort failed transfer.
Reschedule failed transfer.
000
100
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Rev. 1.3