SAM7S256_14 Datasheet, PDF (345/775 Pages) ATMEL Corporation – ARM-based Flash MCU

30.10 Two-wire Interface (TWI) User Interface
Table 30-4. Register Mapping
Offset
Register
0x00
Control Register
0x04
Master Mode Register
0x08
Slave Mode Register
0x0C
Internal Address Register
0x10
Clock Waveform Generator Register
0x20
Status Register
0x24
Interrupt Enable Register
0x28
Interrupt Disable Register
0x2C
Interrupt Mask Register
0x30
Receive Holding Register
0x34
Transmit Holding Register
0x38 - 0xFC
Reserved
Name
TWI_CR
TWI_MMR
TWI_SMR
TWI_IADR
TWI_CWGR
TWI_SR
TWI_IER
TWI_IDR
TWI_IMR
TWI_RHR
TWI_THR
–
–
Access
Write-only
Read-write
Read-write
Read-write
Read-write
Read-only
Write-only
Write-only
Read-only
Read-only
Write-only
–
–
Reset
N/A
0x00000000
0x00000000
0x00000000
0x00000000
0x0000F009
N/A
N/A
0x00000000
0x00000000
0x00000000
–
–
SAM7S Series [DATASHEET]
6175M–ATARM–26-Oct-12
345