lu82562ex Intel Corporation, lu82562ex Datasheet - Page 24

• Manufacturer Part Number: lu82562ex
• Description: Dual Footprint
• Manufacturer: Intel Corporation

82562EZ(EX)/82547GI(EI) Dual Footprint Design Guide
16
Table 10. Microwire 64 x 16 Serial EEPROMs
Table 11. SPI Serial EEPROMs for 82547GI(EI) Controller
For non-ASF applications, use a 64 register by 16-bit Microwire serial EEPROM. For ASF 1.0
applications, use larger 93C66 Microwire or AT25040 SPI* Serial EEPROM. ASF 2.0 requires an
8K SPI* Serial EEPROM.
Intel has an MS-DOS* software utility called EEUPDATE, which can be used to program
EEPROM images in development or production line environments. To obtain a copy of this
program, contact your Intel representative.
The EEPROM access algorithm programmed into the 82547GI(EI) controller is compatible with
most, but not all, commercially available 3.3 V Microwire interface, serial EEPROM devices, with
64 x 16 (or 256 x 16) organization and a 1 MHz speed rating. The 82547GI(EI)'s EEPROM access
algorithm drives extra pulses on the shift clock at the beginnings and ends of read and write cycles.
The extra pulses may violate the timing specifications of some EEPROM devices. In selecting a
serial EEPROM, choose a device that specifies “don't care” shift clock states between accesses.
Microwire EEPROMs that have been found to work satisfactorily with the 82547GI(EI) Gigabit
Ethernet Controller are listed in the following table:
1.
SPI* EEPROMs that have been found to work satisfactorily with the 82547GI(EI) device are listed
in
Atmel
Catalyst
ASF 1.0 or IPMI Pass Through
ASF 2.0 or IPMI Advanced Pass Through
Table
Revision H is not supported. Product die revision letter is marked on top of the package as a suffix to the production data
code (e.g., AYWWH.)
11. SPI EEPROMs must be rated for a clock rate of at least 2 MHz.
Application
Manufacturer
Atmel
Atmel
Manufacturer
AT93C46
CAT93C46
Manufacturer's Part Number
AT25040
AT25080
Manufacturer's Part
1
Number