C8051F320-TB Silicon Laboratories Inc, C8051F320-TB Datasheet - Page 184

• Manufacturer Part Number: C8051F320-TB
• Description: BOARD PROTOTYPING W/C8051F320
• Manufacturer: Silicon Laboratories Inc
• Type: MCUr

Specifications of C8051F320-TB

• Contents: Board
• Processor To Be Evaluated: C8051F320/F321
• Interface Type: USB
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With/related Products: C8051F320
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

C8051F320/1
16.6. SMBus Status Decoding
The current SMBus status can be easily decoded using the SMB0CN register. In the table below, STATUS
VECTOR refers to the four upper bits of SMB0CN: MASTER, TXMODE, STA, and STO. Note that the
shown response options are only the typical responses; application-specific procedures are allowed as
long as they conform to the SMBus specification. Highlighted responses are allowed but do not conform to
the SMBus specification.
184
1110
1100
Values Read
0
0
0
0
0
0
X A master START was generated.
0
1
Current SMbus State
A master data or address byte
was transmitted; NACK received.
A master data or address byte
was transmitted; ACK received.
Table 16.4. SMBus Status Decoding
Rev. 1.4
Typical Response Options
Load slave address + R/W
into SMB0DAT.
Set STA to restart transfer.
Abort transfer.
Load next data byte into
SMB0DAT.
End transfer with STOP.
End transfer with STOP and
start another transfer.
Send repeated START.
Switch to Master Receiver
Mode (clear SI without writ-
ing new data to SMB0DAT).
0
1
0
0
0
1
1
0
Written
Values
0
0
1
0
1
1
0
0
X
X
X
X
X
X
X
X