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ClockMatrix
EEPROM Programming Instructions
Introduction
The 8A3xxxx Family of products from IDT are designed to power-up and operate using internal resources.
However there may be cases where it is necessary or convenient to make use of an external I2C serial EEPROM
for the device to obtain alternate information from at reset.
This document provides information about the EEPROM hardware connections, how to program the EEPROM
using the Clock Matrix chip, and other miscellaneous information.
Contents
1.
EEPROM Overview.................................................................................................................................2
2.
Hardware Setup......................................................................................................................................2
3.
Programming the EEPROM...................................................................................................................3
4.
Revision History.....................................................................................................................................7
Feb.10.20
Application Note
Page 1 of 7
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Summary of Contents for Renesas ClockMatrix 8A3 Series
- Page 1 Application Note ClockMatrix EEPROM Programming Instructions Introduction The 8A3xxxx Family of products from IDT are designed to power-up and operate using internal resources. However there may be cases where it is necessary or convenient to make use of an external I2C serial EEPROM for the device to obtain alternate information from at reset.
-
Page 2: Eeprom Overview
(embedded) firmware. Any number of Config blocks are allowed. Renesas will provide the EEPROM image in the form of a .hex file that is formatted according to the Intel Hex format. Details of the structure of the EEPROM is beyond the scope of this document. -
Page 3: Programming The Eeprom
ClockMatrix EEPROM Programming Instructions In the case of prototype boards, a PDIP socket, such as the DILV8P-223TLF can be used (see Figure 2). This allows for easy removal of the EEPROM so that it can be programmed using an external board, such as the Total Phase EEPROM Socket Board. - Page 4 ClockMatrix EEPROM Programming Instructions Feb.10.20 Page 4 of 7...
- Page 5 ClockMatrix EEPROM Programming Instructions Feb.10.20 Page 5 of 7...
- Page 6 ClockMatrix EEPROM Programming Instructions The EEPROM buffer register is 128 bytes long, and is the location where the data is either written to the EEPROM or read from the EEPROM. For PR4.0, the location is 0xCF80. The following is an example of an SPI 2-byte addressing sequence that shows how to program the first 128 bytes of an EEPROM.
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Page 7: Revision History
ClockMatrix EEPROM Programming Instructions Revision History Rev. Date Description 1.00 Feb.10.2020 Initial release. Feb.10.20 Page 7 of 7... - Page 8 Renesas' products are provided only subject to Renesas' Terms and Conditions of Sale or other applicable terms agreed to in writing. No use of any Renesas resources expands or otherwise alters any applicable warranties or warranty disclaimers for these products.