35.8.6 Register Summary - I2C Client
For descriptions and definitions of both Register and bitfield properties, refer to Register Properties.
| Offset | Name | Bit Pos. | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|
| 0x00 | CTRLA | 31:24 | LOWTOUT | SCLSM | SPEED[1:0] | |||||
| 23:16 | SEXTTOEN | SDAHOLD[1:0] | SMBUSEN | PINOUT | ||||||
| 15:8 | SLEWRATE[1:0] | FILTSEL[1:0] | ||||||||
| 7:0 | RUNSTDBY | MODE[2:0] | ENABLE | SWRST | ||||||
| 0x04 | CTRLB | 31:24 | ||||||||
| 23:16 | FIFOCLR[1:0] | ACKACT | CMD[1:0] | |||||||
| 15:8 | AMODE[1:0] | AACKEN | GCMD | SMEN | ||||||
| 7:0 | ||||||||||
| 0x08 | CTRLC | 31:24 | TXTRHOLD[1:0] | RXTRHOLD[1:0] | FIFOEN | DATA32B | ||||
| 23:16 | ||||||||||
| 15:8 | ||||||||||
| 7:0 | SDASETUP[3:0] | |||||||||
0x0C ... 0x13 | Reserved | |||||||||
| 0x14 | INTENCLR | 7:0 | ERROR | RXFF | TXFE | DRDY | AMATCH | PREC | ||
0x15 | Reserved | |||||||||
| 0x16 | INTENSET | 7:0 | ERROR | RXFF | TXFE | DRDY | AMATCH | PREC | ||
0x17 | Reserved | |||||||||
| 0x18 | INTFLAG | 7:0 | ERROR | RXFF | TXFE | DRDY | AMATCH | PREC | ||
0x19 | Reserved | |||||||||
| 0x1A | STATUS | 15:8 | LENERR | HS | SEXTTOUT | |||||
| 7:0 | CLKHOLD | LOWTOUT | SR | DIR | RXNACK | COLL | BUSERR | |||
| 0x1C | SYNCBUSY | 31:24 | ||||||||
| 23:16 | ||||||||||
| 15:8 | ||||||||||
| 7:0 | LENGTH | SYSOP | ENABLE | SWRST | ||||||
0x20 ... 0x21 | Reserved | |||||||||
| 0x22 | LENGTH | 15:8 | LENEN | |||||||
| 7:0 | LEN[7:0] | |||||||||
| 0x24 | ADDR | 31:24 | ADDRMASK[9:7] | |||||||
| 23:16 | ADDRMASK[6:0] | |||||||||
| 15:8 | TENBITEN | ADDR[9:7] | ||||||||
| 7:0 | ADDR[6:0] | GENCEN | ||||||||
| 0x28 | DATA | 31:24 | DATA[31:24] | |||||||
| 23:16 | DATA[23:16] | |||||||||
| 15:8 | DATA[15:8] | |||||||||
| 7:0 | DATA[7:0] | |||||||||
0x2C ... 0x33 | Reserved | |||||||||
| 0x34 | FIFOSPACE | 15:8 | RXSPACE[4:0] | |||||||
| 7:0 | TXSPACE[4:0] | |||||||||
| 0x36 | FIFOPTR | 15:8 | CPURDPTR[3:0] | |||||||
| 7:0 | CPUWRPTR[3:0] | |||||||||