4

6092C–DRMSD–12-Feb-07

ATSAM3108B

• 2 x asynchronous bidirectional serial ports

• Synchronous serial slave port (SPI type host connection)

• SPI master bidirectional port for EEPROM or DataFlash connection

• Firmware controlled I/O pins

4.

Typical Application Example

4.1

Professional Audio

Figure 4-1.

Professional Audio Application

• Eight channels audio-in, eight channels audio-out @ 96kHz at 24-bit sampling rate

• Digital Mixer with the possibility of incoming audio sampling rate converter

• Effects

• Four Channels 31-band Equalizer

• Feedback Canceller

5.

DSP Capacity and I/O Configuration

5.1

DSP Considerations

The ATSAM3108B includes 8 x P24 DSPs. Table 5-1 below lists the performance achievable by

the P24.

The ATSAM3108B runs firmware directly from the built in 16 x 24 RAM. It has no wave-table

synthesis capability. The firmware should be downloaded at power-up.

ATSAM3108B

ADC

DAC

Atmel

DataFlash

8-channel

Audio

Out

Switches

LCD

Display

MIDI

Table 5-1.

P24 Performance

Function

P24s Required

Stereo reverb and chorus @48 kHz

1

Stereo sampling rate conversion @ 96 kHz

1

31-band equalizer @ 96 kHz

3

Stereo 31-band equalizer @48 kHz

3

256 points FFT or IFFT @96 kHz,

includes windowing

1