The DSM2150F5V is an 8 or 16-bit system memory device for use with the Analog Devices DSPs. DSM means Digital signal processor System Memory. A DSM device brings In-System Programmable (ISP) Flash memory, parameter storage, programmable logic, and additional I/O to DSP systems. The result is a flexible two-chip solution for DSP designs. On-chip integrated memory decode logic makes it easy to map dual banks of Flash memory to the DSPs in a variety of ways for bootloading or bypassing DSP boot ROM, code execution, data recording, code swapping, and parameter storage.
FEATURES SUMMARY
■ Glueless Connection to DSP
– Easily add memory, logic, and I/O to the External Port of ADSP-218x, 219x, 2106x, 2116x, 2153x, and TS101 families of
DSPs from Analog Devices, Inc.
■ Dual Flash Memories
– Two independent Flash memory arrays for storing DSP code and data
– Capable of read-while-write concurrent Flash memory operation
– Device can be configured as 8-bit or 16-bit
– Built-in programmable address decoding logic allows mapping individual sectors of each Flash array to any address boundary
– Each Flash sector can be write protected
■ 512 KByte Main Flash memory
– Ample storage for boot loading DSP code/data upon reset and subsequent code swaps
– Large capacity for storing tables and constants or for data recording
■ 32 KByte Secondary Flash memory
– Smaller sector size ideal for storing calibration and configuration constants. Eliminate external serial EEPROM.
– Optionally bypass internal DSP boot ROM during start-up and execute code directly from Secondary Flash. Use for custom
start-up code and In-Application Programming (IAP).
■ Up to 40 Multifunction I/O Pins
– Increase total DSP system I/O capability
– I/O controlled by DSP software or PLD logic
■ General purpose PLD
– Use for peripheral glue logic to keypads, control panel, displays, LCDs, and other devices
– Over 3,000 gates of PLD with 16 macro cells
– Eliminate PLDs and external logic devices
– Create state machines, chip selects, simple shifters and counters, clock dividers, delays
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