Datasheet

243
AT32UC3A
24.13.6.2 Clock Synchronization in Write Mode
The clock is tied low if the shift register and the RHR is full. If a STOP or REPEATED_START
condition was not detected, it is tied low until RHR is read.
Figure 24-27 on page 243 describes the clock synchronization in Read mode.
Figure 24-27. Clock Synchronization in Write Mode
Notes: 1. At the end of the read sequence, TXCOMP is set after a STOP or after a REPEATED_START + an address different from
SADR.
2. SCLWS is automatically set when the clock synchronization mechanism is started and automatically reset when the mecha-
nism is finished.
Rd DATA0
Rd DATA1
Rd DATA2
SVACC
SVREAD
RXRDY
SCLWS
TXCOMP
DATA1
DATA2
SCL is stretched on the last bit of DATA1
As soon as a START is detected
TWCK
TWD
TWI_RHR
CLOCK is tied low by the TWI as long as RHR is full
DATA0 is not read in the RHR
ADRS SADR W ADATA0A A DATA2DATA1 S
NA
32058K
AVR32-01/12