Datasheet

28.9 Register Summary - I2C Master
Offset Name Bit Pos.
0x00 CTRLA
7:0 RUNSTDBY MODE[2:0] ENABLE SWRST
15:8
23:16 SEXTTOEN MEXTTOEN SDAHOLD[1:0] PINOUT
31:24 LOWTOUT INACTOUT[1:0] SCLSM SPEED[1:0]
0x04 CTRLB
7:0
15:8 QCEN SMEN
23:16 FIFOCLR[1:0] ACKACT CMD[1:0]
31:24
0x08
...
0x0B
Reserved
0x0C BAUD
7:0 BAUD[7:0]
15:8 BAUDLOW[7:0]
23:16 HSBAUD[7:0]
31:24 HSBAUDLOW[7:0]
0x10
...
0x13
Reserved
0x14 INTENCLR 7:0 ERROR RXFF TXFE SB MB
0x15 Reserved
0x16 INTENSET 7:0 ERROR RXFF TXFE SB MB
0x17 Reserved
0x18 INTFLAG 7:0 ERROR RXFF TXFE SB MB
0x19 Reserved
0x1A STATUS
7:0 CLKHOLD LOWTOUT BUSSTATE[1:0] RXNACK ARBLOST BUSERR
15:8 LENERR SEXTTOUT MEXTTOUT
0x1C SYNCBUSY
7:0 SYSOP ENABLE SWRST
15:8
23:16
31:24
0x20
...
0x23
Reserved
0x24 ADDR
7:0 ADDR[7:0]
15:8 TENBITEN HS LENEN ADDR[10:8]
23:16 LEN[7:0]
31:24
0x28 DATA
7:0 DATA[7:0]
15:8
0x2A
...
0x2F
Reserved
0x30 DBGCTRL 7:0 DBGSTOP
SAM D21 Family
SERCOM I2C – Inter-Integrated Circuit
© 2018 Microchip Technology Inc.
Datasheet Complete
DS40001882D-page 598