Datasheet

SAM3X / SAM3A [DATASHEET]
Atmel-11057C-ATARM-SAM3X-SAM3A-Datasheet_23-Mar-15
632
Notes: 1. Reset value of PIO_PSR depends on the product implementation.
2. PIO_ODSR is Read-only or Read/Write depending on PIO_OWSR I/O lines.
3. Reset value of PIO_PDSR depends on the level of the I/O lines. Reading the I/O line levels requires the clock of the PIO
Controller to be enabled, otherwise PIO_PDSR reads the levels present on the I/O line at the time the clock was disabled.
4. PIO_ISR is reset at 0x0. However, the first read of the register may read a different value as input changes may have
occurred.
5. Only this set of registers clears the status by writing 1 in the first register and sets the status by writing 1 in the second
register.
0x0070 Peripheral AB Select Register
(5)
PIO_ABSR Read-Write 0x00000000
0x0074 to
0x007C
Reserved
0x0080 System Clock Glitch Input Filter Select Register PIO_SCIFSR Write-Only –
0x0084 Debouncing Input Filter Select Register PIO_DIFSR Write-Only –
0x0088 Glitch or Debouncing Input Filter Clock Selection Status Register PIO_IFDGSR Read-Only 0x00000000
0x008C Slow Clock Divider Debouncing Register PIO_SCDR Read-Write 0x00000000
0x0090 to
0x009C
Reserved
0x00A0 Output Write Enable PIO_OWER Write-only –
0x00A4 Output Write Disable PIO_OWDR Write-only –
0x00A8 Output Write Status Register PIO_OWSR Read-only 0x00000000
0x00AC Reserved
0x00B0 Additional Interrupt Modes Enable Register PIO_AIMER Write-Only –
0x00B4 Additional Interrupt Modes Disables Register PIO_AIMDR Write-Only –
0x00B8 Additional Interrupt Modes Mask Register PIO_AIMMR Read-Only 0x00000000
0x00BC Reserved
0x00C0 Edge Select Register PIO_ESR Write-Only –
0x00C4 Level Select Register PIO_LSR Write-Only –
0x00C8 Edge/Level Status Register PIO_ELSR Read-Only 0x00000000
0x00CC Reserved
0x00D0 Falling Edge/Low Level Select Register PIO_FELLSR Write-Only –
0x00D4 Rising Edge/ High Level Select Register PIO_REHLSR Write-Only –
0x00D8 Fall/Rise - Low/High Status Register PIO_FRLHSR Read-Only 0x00000000
0x00DC Reserved
0x00E0 Lock Status PIO_LOCKSR Read-Only 0x00000000
0x00E4 Write Protect Mode Register PIO_WPMR Read-write 0x0
0x00E8 Write Protect Status Register PIO_WPSR Read-only 0x0
0x00EC to
0x00F8
Reserved
0x0100 to
0x0144
Reserved
Table 31-3. Register Mapping (Continued)
Offset Register Name Access Reset