Datasheet

Table Of Contents
Issuing a command will set the System Operation bit in the Synchronization Busy register
(SYNCBUSY.SYSOP).
Table 36-4. Command Description
CMD[1:0] Direction Action
0x0 X (No action)
0x1 X Execute acknowledge action succeeded by repeated Start
0x2 0 (Write) No operation
1 (Read) Execute acknowledge action succeeded by a byte read operation
0x3 X Execute acknowledge action succeeded by issuing a Stop condition
These bits are not enable-protected.
Bit 9 – QCEN Quick Command Enable
This bit is not write-synchronized.
Value Description
0
Quick Command is disabled.
1
Quick Command is enabled.
Bit 8 – SMEN Smart Mode Enable
When Smart mode is enabled, acknowledge action is sent when DATA.DATA is read.
This bit is not write-synchronized.
Value Description
0
Smart mode is disabled.
1
Smart mode is enabled.
SAM D5x/E5x Family Data Sheet
SERCOM I2C – Inter-Integrated Circuit
© 2019 Microchip Technology Inc.
Datasheet
DS60001507E-page 1053