SAM3X8E Atmel Corporation, SAM3X8E Datasheet - Page 642

• Manufacturer Part Number: SAM3X8E
• Manufacturer: Atmel Corporation

31.5
Figure 31-3. I/O Line Control Logic
642
642
PIO_SCDR
Functional Description
SAM3X/A
SAM3X/A
Slow Clock
System Clock
Output Enable
Output Enable
Peripheral A
Peripheral B
Peripheral A
Peripheral B
Output
Output
PIO_SCIFSR[0]
PIO_DCIFSR[0]
PIO_IFSCR[0]
Divider
Clock
The PIO Controller features up to 32 fully-programmable I/O lines. Most of the control logic asso-
ciated to each I/O is represented in
represents but one of up to 32 possible indexes.
PIO_ABSR[0]
1
0
PIO_IFER[0]
PIO_IFDR[0]
Programmable
PIO_OER[0]
PIO_ODR[0]
Debouncing
PIO_IFSR[0]
1
1
Glitch
0
0
Filter
or
PIO_OSR[0]
PIO_SODR[0]
PIO_CODR[0]
PIO_PER[0]
PIO_PDR[0]
1
0
PIO_ODSR[0]
PIO_PSR[0]
Resynchronization
D
DFF
Q
Stage
D
PIO_PDSR[0]
DFF
Q
Figure
1
0
1
0
PIO_MDER[0]
PIO_MDDR[0]
31-3. In this description each signal shown
DETECTOR
PIO_IDR[31]
PIO_IER[31]
EVENT
PIO_MDSR[0]
PIO_IDR[0]
PIO_IER[0]
PIO_IMR[31]
PIO_ISR[31]
PIO_IMR[0]
1
0
0
1
PIO_PUER[0]
PIO_PUDR[0]
PIO_ISR[0]
PIO_PUSR[0]
(Up to 32 possible inputs)
11057A–ATARM–17-Feb-12
11057A–ATARM–17-Feb-12
Peripheral A
Peripheral B
PIO Interrupt
Input
Input
Pad