SAM5708B datasheet(3/89 Pages) ETC1

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SAM5708B

SAM5708B.pdf

– Rev 14/05/2018

1.2.

Overview

Based on a multi-

layer architecture, the new family of DREAM’s Audio & Music processors

(SAM5000) is built around a new highly speed optimized 16-bit CPU (P16XT) and a configurable

array of hardware accelerated 24-bit DSP cores (P24XT).

A Sample Cache System dedicated to sound synthesis allows SAM5000 processors to reach high

levels of polyphony whatever the memory type used for sound bank storage. Moreover, this

solution allows on-the-fly decryption of waves protected with strong AES

(*) encryption.

The processing of delay lines in external memory is hugely facilitated with the integration of a

multi-channel DMA controller. This controller performs fast memory-to-memory data transfers with

some key features:

burst modes and circular buffer structures are supported and data are

automatically re-formatted (24-bit

↔16-bit) when transfers are done from internal to external

memories. Transfers can be done in parallel on several channels without requiring any assistance

of the CPU or DSP cores.

The SAM5708B

is part of the new generation of DREAM’s audio & music processors and

automatically inherits all above features. With an array of 8 P24XT DSP cores, the SAM5708B

offers high performance processing. Delivered in a cost efficient 128-pin QFP package, it can be

used in various high range sound module and professional audio applications.

In addition to a large variety of communication interfaces (USB 2.0 HS port, Ethernet MAC

controller, S/PDIF IN/OUT…), the SAM5708B has two memory ports supporting various, parallel or

serial, memory types. Up to 6 different memory configurations can be defined with pull-resistors

externally connected to dedicated pins. Memory configuration is read by boot program at power-up

from dedicated pins or fuse bits.

The SAM5708B includes a 24-bit Audio Router and supports up to 16 Audio Channels IN & OUT.

Depending on primary functions in use, digital audio signals can be accessed via primary or

secondary IO pads. Most of the IO pads that are not used for primary functions remain available

for secondary functions or for firmware programmable IO

functions (Versatile IO’s or GPIO’s).

The SAM5708B can handle up to 176 switches (organized in matrix form) and 88 LEDs (in a time

multiplexed way) through versatile firmware programmable IO pads. Keyboard and switches

scanning tasks can be fully customized in one dedicated P24XT, making the SAM5708B directly

compatible with most of velocity keyboards. Similarly, LCD or graphic displays can be directly

connected to programmable IO’s and controlled by the P16XT.

A built-in ADC allows connecting continuous controllers like pitch-bend wheel, modulation, volume

sliders, tempo sliders, etc.

A built-in 1kbit eFuse provides a plenty of irreversible One-Time-Programmable bits for the storage

of configuration parameters, decryption keys and other security purposes. AES-protected sound

banks and firmware can be decrypted on-the-fly within the SAM5708B.

(*) AES is the worldwide most used symmetric-key algorithm.

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