This document describes a project to connect external overlay and I/O memory to the ADSP-2181 DSP chip, which contains 16k words of program and data memory. The implementation utilized the ADSP-2181 EZ-Kit Lite expansion connectors, a female header strip, and a wire-wrap board holding 32k x 8 SRAM chips.
The project verified the use of overlay memory with zero wait states as per published information. While the I/O memory was still in the debugging phase at the time of writing, the project was estimated to be completed within two weeks, pending the finalization of an application note and schematics.
| Program Memory | 16k word |
|---|---|
| Data Memory | 16k word |
| SRAM Capacity | 32k x 8 |
| SRAM Wait States | 0 waitstates |
The ADSP-2181 EZ-Kit Lite was used to connect the external overlay and I/O memory.
Five 32k x 8 SRAM chips with 12 ns access time and zero wait states were used.
No, the I/O memory was still in the process of debugging when the document was written.