Atmel Evaluation Kit for AT32uC3A0512, 32-Bit AVR Microcontroller Atmel ATEVK1105 ATEVK1105 Data Sheet
Product codes
ATEVK1105
259
AT32UC3A
25. Synchronous Serial Controller (SSC)
Rev: 3.0.0.2
25.1
Features
•
Provides Serial Synchronous Communication Links Used in Audio and Telecom Applications
•
Contains an Independent Receiver and Transmitter and a Common Clock Divider
•
Interfaced with Two PDCA Channels (DMA Access) to Reduce Processor Overhead
•
Offers a Configurable Frame Sync and Data Length
•
Receiver and Transmitter Can be Programmed to Start Automatically or on Detection of Different
Events on the Frame Sync Signal
•
Receiver and Transmitter Include a Data Signal, a Clock Signal and a Frame Synchronization
Signal
25.2
Overview
The Atmel Synchronous Serial Controller (SSC) provides a synchronous communication link
with external devices. It supports many serial synchronous communication protocols generally
used in audio and telecom applications such as I2S, Short Frame Sync, Long Frame Sync, etc.
The SSC contains an independent receiver and transmitter and a common clock divider. The
The SSC contains an independent receiver and transmitter and a common clock divider. The
receiver and the transmitter each interface with three signals: the TX_DATA/RX_DATA signal
for data, the TX_CLOCK/RX_CLOCK signal for the clock and the
TX_FRAME_SYNC/RX_FRAME_SYNC signal for the Frame Sync. The transfers can be pro-
grammed to start automatically or on different events detected on the Frame Sync signal.
The SSC’s high-level of programmability and its two dedicated PDCA channels of up to 32 bits
The SSC’s high-level of programmability and its two dedicated PDCA channels of up to 32 bits
permit a continuous high bit rate data transfer without processor intervention.
Featuring connection to two PDCA channels, the SSC permits interfacing with low processor
Featuring connection to two PDCA channels, the SSC permits interfacing with low processor
overhead to the following:
• CODEC’s in master or slave mode
• DAC through dedicated serial interface, particularly I2S
• Magnetic card reader
• DAC through dedicated serial interface, particularly I2S
• Magnetic card reader
32058K AVR32-01/12