ATSAM2133B ATMEL Corporation, ATSAM2133B Datasheet - Page 3

• Manufacturer Part Number: ATSAM2133B
• Description: Low-power Synthesizer
• Manufacturer: ATMEL Corporation

General Description
Block Diagram
Synthesis/DSP Engine
2694A–DRMSD–05/03
www.DataSheet4U.com
ATSAM2133B
256 x 16 Data RAM
Processor Core
P16 Processor
16-bit CISC
includes
The synthesis/DSP engine operates on a frame timing basis with the frame subdivided
into 64 process slots. Each process is, in turn, divided into 16 micro-instructions known
as algorithms. Up to 32 synthesis/DSP algorithms can be stored on-chip in the Alg RAM
memory, allowing the device to be programmed for a number of audio signal genera-
tion/processing applications. The synthesis/DSP engine is capable of generating 64
simultaneous voices using algorithms such as wavetable synthesis with interpolation,
alternate loop and 24 dB resonant filtering for each voice. Slots may be linked together
(ML RAM) to allow implementation of more complex synthesis algorithms.
A typical application will use half the capacity of the synthesis/DSP engine for synthesis,
thus providing state-of-the-art 32-voice wavetable polyphony. The remaining processing
power will be used for typical functions such as reverberation, chorus, audio-in process-
ing, surround effect, equalizer, etc.
Frequently-accessed synthesis/DSP parameter data are stored in five banks of on-chip
RAM memory. Sample data or delay lines, which are accessed relatively infrequently,
are stored in external ROM or internal 32K x 16 RAM memory. The combination of local-
ized micro-program memory and localized parameter data allows micro-instructions to
execute in 20 ns (50 MIPS). Separate buses from each of the on-chip parameter RAM
memory banks allow highly parallel data movement to increase the effectiveness of
each micro-instruction. With this architecture, a single micro-instruction can accomplish
up to six simultaneous operations (add, multiply, load, store, etc.), providing a potential
throughput of 300 million operations per second (MOPS).
64-slot RISC DSP Core
128 x 28 MA1 RAM
256 x 28 MA2 RAM
512 x 32 Alg RAM
256 x 28 MB RAM
256 x 16 MX RAM
256 x 12 MY RAM
Codec Data I/F
64 x 13 ML RAM
Control/Status
Host I/F FIFO
I/O Functions
Synthesis/DSP
MIDI UART
includes
Timers
includes
Debug/Flash Prog
32K x 16 RAM
Management
Memory
MMU
ROM
Unit
ATSAM2133B
Codec + DAC
ROM
or
Flash
MIDI
MPU
Debug/Flash
Prog
3