LAN9730 datasheet(95/222 Pages) MICROCHIP

95 / 222 page

 2012-2015 Microchip Technology Inc.

DS00001946A-page 95

LAN9730/LAN9730i

4.7.5

EXAMPLE OF EEPROM FORMAT INTERPRETATION

Table 4-61 and Table 4-62 provide an example of how the contents of an EEPROM are formatted. Table 4-61 is a dump

of the EEPROM memory (256-byte EEPROM), while Table 4-62 illustrates, byte by byte, how the EEPROM is formatted.

TABLE 4-61:

DUMP OF EEPROM MEMORY

Offset Byte

Value

0000h

A5 12 34 56 78 9A BC 01

0008h

04 04 09 04 0A 11 12 16

0010h

10 1F 00 00 00 00 12 27

0018h

12 30 12 39 12 42 00 04

0020h

8A 00 0A 03 53 00 4D 00

0028h

53 00 43 00 12 03 4C 00

0030h

41 00 4E 00 39 00 37 00

0038h

33 00 30 00 10 03 30 00

0040h

30 00 30 00 35 00 31 00

0048h

32 00 33 00 12 01 00 02

0050h

FF 00 FF 40 24 04 30 97

0058h

00 01 01 02 03 01 09 02

0060h

27 00 01 01 00 A0 FA 09

0068h

04 00 00 03 FF 00 FF 00

0070h

12 01 00 02 FF 00 FF 40

0078h

24 04 30 97 00 01 01 02

0080h

03 01 09 02 27 00 01 01

0088h

00 A0 FA 09 04 00 00 03

0090h - 00FFh

FF 00 FF 00 ....................

TABLE 4-62:

EEPROM EXAMPLE - 256 BYTE EEPROM

EEPROM

Address

EEPROM Contents

(Hex)

Description

00h

EEPROM programmed indicator

01h - 06h

12 34 56 78 9A BC

MAC Address 12 34 56 78 9A BC

07h

Full-Speed polling interval for Interrupt Endpoint (1 ms)

08h

Hi-Speed polling interval for Interrupt Endpoint (4 ms)

09h

Configuration Flags - The device is bus powered and supports remote

wakeup, nSPD_LED = Speed Indicator, nLNKA_LED = Link and Activity

Indicator, nFDX_LED = full duplex Link Indicator.

0Ah - 0Bh

09 04

Language ID Descriptor 0409h, English

0Ch

Manufacturer ID String Descriptor Length (10 bytes)

0Dh

Manufacturer ID String Descriptor EEPROM Word Offset (11h);

corresponds to EEPROM Byte Offset 22h

0Eh

Product Name String Descriptor Length (16 bytes)

0Fh

Product Name String Descriptor EEPROM Word Offset (16h);

corresponds to EEPROM Byte Offset 2Ch

10h

Serial Number String Descriptor Length (16 bytes)

11h

Serial Number String Descriptor EEPROM Word Offset (1Eh);

corresponds to EEPROM Byte Offset 3Ch

12h

Configuration String Descriptor Length (0 bytes - NA)

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