Datasheet

Other master continues
S SLA/W
A
DATA
A
P
Successful
transmission to a
slave receiver
UCBxTXIFG=1
DATADATA
A A
UCTXSTP=1
UCBxTXIFG=0
Next transfer started
with a repeated start
condition
DATA
A
S SLA/W
1) UCTR=1 (Transmitter)
2) UCTXSTT=1
DATA
A
S SLA/R
1) UCTR=0 (Receiver)
2) UCTXSTT=1
3) UCBxTXIFG=0
Not acknowledge
received after slave
address
P
S SLA/W
S SLA/R
UCTXSTP=1
1) UCTR=1 (Transmitter)
2) UCTXSTT=1
1) UCTR=0 (Receiver)
2) UCTXSTT=1
Arbitration lost in
slave address or
data byte
A
A
Other master continues
Arbitration lost and
addressed as slave
Other master continues
A
UCALIFG=1
UCMST=0
UCTR=0 (Receiver)
UCSTTIFG=1
(UCGC=1 if general call)
UCBxTXIFG=0
UCSTPIFG=0
USCI continues as Slave Receiver
Not acknowledge
received after a data
byte
UCTXSTT=0
UCTXSTP=0
UCTXSTP=0
UCALIFG=1
UCMST=0
(UCSTTIFG=0)
Bus stalled (SCL held low)
until data available
Write data to UCBxTXBUF
1) UCTR=1 (Transmitter)
2) UCTXSTT=1
UCBxTXIFG=1
UCBxTXBUF discarded
UCTXSTT=0
UCNACKIFG=1
UCBxTXIFG=0
UCBxTXBUF discarded
UCBxTXIFG=1
UCBxTXBUF discarded
UCNACKIFG=1
UCBxTXIFG=0
UCBxTXBUF discarded
UCALIFG=1
UCMST=0
(UCSTTIFG=0)
USCI Operation: I
2
C Mode www.ti.com
Figure 17-12. I
2
C Master Transmitter Mode
460
SLAU144J–December 2004–Revised July 2013
Universal Serial Communication Interface, I
2
C Mode
Submit Documentation Feedback
Copyright © 2004–2013, Texas Instruments Incorporated