Atmel SAM4S-XPLD Atmel ATSAM4S-XPLD ATSAM4S-XPLD Hoja De Datos

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SAM4S [DATASHEET]

11100E–ATARM–24-Jul-13

The pins used for interfacing the compliant external devices may be multiplexed with PIO lines. 

Before using the SSC receiver, the PIO controller must be configured to dedicate the SSC receiver I/O lines to the SSC
peripheral mode.

Before using the SSC transmitter, the PIO controller must be configured to dedicate the SSC transmitter I/O lines to the
SSC peripheral mode.

The SSC is not continuously clocked. The SSC interface may be clocked through the Power Management Controller
(PMC), therefore the programmer must first configure the PMC to enable the SSC clock.

The SSC interface has an interrupt line connected to the interrupt controller. Handling interrupts requires programming
the interrupt controller before configuring the SSC.

All SSC interrupts can be enabled/disabled configuring the SSC Interrupt mask register. Each pending and unmasked
SSC interrupt will assert the SSC interrupt line. The SSC interrupt service routine can get the interrupt origin by reading
the SSC interrupt status register.

RF

Receiver Frame Synchro

Input/Output

RK

Receiver Clock

Input/Output

RD

Receiver Data

Input

TF

Transmitter Frame Synchro

Input/Output

TK

Transmitter Clock

Input/Output

TD

Transmitter Data

Output

SSC

RD

PA18

A

SSC

RF

PA20

A

SSC

RK

PA19

A

SSC

TD

PA17

A

SSC

TF

PA15

A

SSC

TK

PA16

A

SSC

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