Datasheet

SAM9G20
DS60001516A-page 430  2017 Microchip Technology Inc.
30.7 Two-wire Interface (TWI) User Interface
Table 30-4: Register Mapping
Offset Register Name Access Reset
0x00 Control Register TWI_CR Write-only –
0x04 Master Mode Register TWI_MMR Read/Write 0x00000000
0x08 Slave Mode Register TWI_SMR Read/Write 0x00000000
0x0C Internal Address Register TWI_IADR Read/Write 0x00000000
0x10 Clock Waveform Generator Register TWI_CWGR Read/Write 0x00000000
0x20 Status Register TWI_SR Read-only 0x0000F009
0x24 Interrupt Enable Register TWI_IER Write-only –
0x28 Interrupt Disable Register TWI_IDR Write-only –
0x2C Interrupt Mask Register TWI_IMR Read-only 0x00000000
0x30 Receive Holding Register TWI_RHR Read-only 0x00000000
0x34 Transmit Holding Register TWI_THR Write-only –
0x38–0xFC Reserved – – –
0x100–0x124 Reserved for the PDC – – –