DS2502-E64 View Datasheet(PDF) - Maxim Integrated

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DS2502-E64

IEEE EUI-64 Node Address Chip

Maxim Integrated 

DS2502-E64

The four bytes at memory addresses 01h to 04h contain the UniqueWare Project ID 00001128h. The two

bytes at addresses 0Dh and 0Eh are the inverted 16-bit CRC over the length byte, Project ID and EUI-64

value. The least significant byte of the CRC is stored at address 0Dh. This CRC is generated according to

the standardized CRC16 polynomial function X16 + X15 + X2 + 1. For more details on generating CRC

values including examples in both hardware and software, see Application Note 27, Understanding and

Using Cyclic Redundancy Checks with Maxim iButton Products.

The contents of the memory address range 0Fh to 1Fh is FFh. These cells cannot be altered since the

whole memory page is write-protected. The memory range from 20h to 7Fh, however, is user-

programmable. It can be write-protected by programming the corresponding write-protect bit in the status

memory of the DS2502-E64.

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