AT91SAM7S32-AI ATMEL [ATMEL Corporation], AT91SAM7S32-AI Datasheet - Page 23

• Manufacturer Part Number: AT91SAM7S32-AI
• Description: AT91 ARM Thumb-based Microcontrollers
• Manufacturer: ATMEL [ATMEL Corporation]

Peripheral Multiplexing on PIO Lines
PIO Controller A Multiplexing
Table 3. Multiplexing on PIO Controller A
6071A–ATARM–28-Oct-04
I/O Line
PA10
PA12
PA13
PA14
PA15
PA16
PA17
PA18
PA19
PA20
PA11
PA0
PA1
PA2
PA3
PA4
PA5
PA6
PA7
PA8
PA9
Peripheral A
NPCS0
PWM0
PWM1
PWM2
TWCK
DRXD
DTXD
SPCK
RXD0
TXD0
CTS0
MISO
MOSI
RTS0
TWD
RD
RK
TK
TD
RF
TF
PIO Controller A
The AT91SAM7S32 features one PIO controller, PIOA, that multiplexes the I/O lines of
the peripheral set.
PIO Controller A controls 21 lines. Each line can be assigned to one of two peripheral
functions, A or B. Some of them can also be multiplexed with the analog inputs of the
ADC Controller.
Table 3 on page 23 defines how the I/O lines of the peripherals A, B or the analog inputs
are multiplexed on PIO Controller A. The two columns “Function” and “Comments” have
been inserted for the user’s own comments; they may be used to track how pins are
defined in an application.
Note that some peripheral functions that are output only may be duplicated in the table.
All pins reset in their Parallel I/O lines function are configured in input with the program-
mable pull-up enabled, so that the device is maintained in a static state as soon as a
reset is detected.
Peripheral B
ADTRG
NPCS3
NPCS3
NPCS1
NPCS2
TCLK0
PWM3
PWM0
PWM1
PWM2
PWM3
TIOA0
TIOB0
TIOA1
TIOB1
SCK0
PCK0
PCK1
PCK2
IRQ0
FIQ
Comments
High-Drive
High-Drive
High-Drive
High-Drive
AD0
AD1
AD2
AD3
AT91SAM7S32 Preliminary
Function
Application Usage
Comments
23