Analog Devices EE-127 ADSP-21065L On-Chip SDRAM Controller Technical Notes

This technical document introduces the characteristics and features of the Analog Devices ADSP-21065L on-chip SDRAM controller, including the internal signal chain, address mapping scheme, and command truth table.


Analog Devices EE-127 ADSP-21065L On-Chip SDRAM Controller Technical Notes - cover page
Brand
Analog Devices
Category
Other Electronics
Document type
Application Note
Language
English
Pages
48
File format
PDF
File size
228 KB
Published
03 August, 2012
Updated
30 September, 2023
MD5 checksum
BF07079206931FBB90F41D8701670825

About this manual

This document provides technical notes on using the Analog Devices ADSP-21065L DSP components, specifically focusing on the on-chip SDRAM controller. It introduces the controller's characteristics, including the internal signal chain and necessary address-mapping schemes. The text details the command truth tables for various SDRAM operations and summarizes the important power-up sequences required for successful design implementation.

What's inside

  • Signal Chain of SDRAM
  • On-Chip Controller Architecture
  • Command Coding
  • Controller specific Properties
  • Programming the SDRAM Interface
  • Timing of Power up Sequence
  • Code Execution from SDRAM
  • Optimizing the Performance
  • SDRAM and Booting
  • Core and IOP Transfers to SDRAM

Specifications

Maximum SDCLK clock frequency66 MHz
Maximum addressable rows4096 Rows
Maximum addressable columns1024 columns

Frequently asked questions

What is the maximum clock frequency for the SDCLK?

The maximum clock frequency for the SDCLK is 66 MHz.

Does the ADSP-21065L support auto precharge?

No, auto precharge is not allowed for this controller.

How many rows and columns can be addressed?

The controller can address a maximum of 4096 rows within 1024 columns.

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