Atmel ARM-Based Evaluation Kit AT91SAM9N12-EK AT91SAM9N12-EK Data Sheet

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SAM9N12/SAM9CN11/SAM9CN12 [DATASHEET]

11063K–ATARM–05-Nov-13

Notes: 1. Reset value 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. If an offset is not listed in the table it must be considered as reserved.

0x008C

Slow Clock Divider Debouncing Register

PIO_SCDR

Read/Write

0x00000000

0x0090

Pad Pull-down Disable Register

PIO_PPDDR

Write-only

–

0x0094

Pad Pull-down Enable Register

PIO_PPDER

Write-only

–

0x0098

Pad Pull-down Status Register

PIO_PPDSR

Read-only

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 Disable 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

Reserved

–

–

–

0x00E4

Write Protection Mode Register

PIO_WPMR

Read/Write

0x0

0x00E8

Write Protection Status Register

PIO_WPSR

Read-only

0x0

0x00EC
to
0x00F8

Reserved

–

–

–

0x0100

Schmitt Trigger Register

PIO_SCHMITT

Read/Write

0x00000000

0x0104-
0x010C

Reserved

–

–

–

0x0110

IO Delay Register

PIO_DELAYR

Read/Write

0x00000000

0x0114

I/O Drive Register 1

PIO_DRIVER1

Read/Write

0x00000000

0x0118

I/O Drive Register 2

PIO_DRIVER2

Read/Write

0x00000000

0x011C

Reserved

–

–

–

0x0120
to
0x014C

Reserved

–

–

–