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Description

The DSM2190F4, DSM2190F4V is a system memory device for use with the Analog Devices ADSP-2191 DSP. 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 simple and flexible two-chip solution for DSP designs. DSM devices provide the flexibility of Flash memory and smart JTAG programming techniques for both manufacturing and the field.

FEATURES SUMMARY

1. Glueless Connection to DSP
– Easily add memory, logic, and I/O to the External Port of ADSP-2191 DSP

2. Dual Flash Memories
– Two independent Flash memory arrays for storing DSP code and data. DSP may access the
two arrays concurrently (read from one while erasing or writing the other)
– 256K x 8 Main Flash memory divided into 8 sectors (32KByte each)
– Ample storage for booting DSP code/data upon reset and subsequent code swaps
– Large capacity for data recording

3. Up to 16 Multifunction I/O Pins
– Increase total DSP system I/O capability
– I/O controlled by DSP software or PLD logic

4. General purpose PLD
– Over 3,000 Gates of PLD with 16 macro cells
– Use for peripheral glue logic to keypads, control panel, displays, LCDs, and other devices
– Eliminate PLDs and external logic devices
– Create state machines, chip selects, simple shifters and counters, clock dividers, delays
– Simple PSDsoft Express

5. In-System Programming (ISP) with JTAG
– Program entire chip in 10-25 seconds with no in volvement of the DSP
– Links with ADSP-2191 JTAG debug port
– Eliminate sockets for pre-programmed memory and logic devices
– ISP allows efficient manufacturing and product testing supporting Just-In-Time inventory
– Use low-cost FlashLINK TMcable with PC

6. Content Security
– Programmable Security Bit blocks access of device programmers and readers

7. Zero-Power Technology
– As low as 25µA standby current