c8051t623-g Silicon Laboratories, c8051t623-g Datasheet - Page 163

• Manufacturer Part Number: c8051t623-g
• Description: Full Speed Usb Eprom Mcu Family
• Manufacturer: Silicon Laboratories

C8051T622/3 and C8051T326/7
170
Table 19.6. SMBus Status Decoding With Hardware ACK Generation Enabled (EHACK = 1)
0010
0001
0000 0
0010 0
0001 0
0000 0
Values Read
0
0
0
0
0 X
1 X
0 X
1 X
0 X A slave byte was received.
1 X
1 X
1 X
A slave address + R/W was
received; ACK sent.
Lost arbitration as master;
slave address + R/W received;
ACK sent.
A STOP was detected while
addressed as a Slave Trans-
mitter or Slave Receiver.
Lost arbitration while attempt-
ing a STOP.
Lost arbitration while attempt-
ing a repeated START.
Lost arbitration due to a
detected STOP.
Lost arbitration while transmit-
ting a data byte as master.
Current SMbus State
(Continued)
Rev. 1.1
If Write, Set ACK for first data
byte.
If Read, Load SMB0DAT with
data byte
If Write, Set ACK for first data
byte.
If Read, Load SMB0DAT with
data byte
Reschedule failed transfer
Clear STO.
No action required (transfer
complete/aborted).
Set ACK for next data byte;
Read SMB0DAT.
Set NACK for next data byte;
Read SMB0DAT.
Abort failed transfer.
Reschedule failed transfer.
Abort failed transfer.
Reschedule failed transfer.
Abort failed transfer.
Reschedule failed transfer.
Typical Response Options
Values to
0
0
0
0
1
0
0
0
0
0
1
0
1
0
1
Write
0 1
0 X 0100
0 1
0 X 0100
0 X
0 X
0 0
0 1
0 0
0 X
0 X
0 X
0 X
0 X
0 X
0000
0000
0000
0000
1110
1110
1110
1110
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