Intel 82547EI, Руководство по конструкции

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82562EZ(EX)/82547GI(EI) Dual Footprint
Revision History
Revision Revision Date Description
0.25 Jul 2002 Initial publication of preliminary design guide information.
0.75 Sep 2002 Published revised design guide information:
• Added information on EEPROM settings
• Added design checklist
• Revised reference design schematic
• Revised Ball Number to signal mapping Table to conform to changes in
82547EI datasheet rev 0.75
1.0 Oct 2002 Published revised design guide information:
• Added layout checklist
• Updated LAN disable circuit
• Removed EEPROM information due to publication of separate guides
1.5 Sep 2003 Published revised design guide information:
• Added 82547GI coverage
• Removed Confidential status
• Updated schematics, removed redundant caps
• Revised LAN disable circuit
1.6 Nov 2004 Added crystal start-up information. Information includes:
• New crystal parameters
• Crystal selection guidelines
• Crystal validation methods
• Crystal testing methods
Changed signal name FL_SO to the correct signal name FLSH_SO.
Added 82562EX applicability.
Added new values for TX and RX terminations (next to LAN silicon). New
values are now 110
Ω
for both TX and RX terminations.
Added new starting values for RBIAS100 and RBIAS10. New starting values
are now 649
Ω
for RBIAS100 and 619
Ω
for RBIAS10.
Updated reference schematics to reflect new Tx and Rx termination values,
new LAN disable circuit, and RBIAS100/RBIAS10 values.
Removed excess capacitors and changed pins F12 and H12 to no connects.
Added a 1K
Ω
resistor to pin A13 output.
1.7 Jan 2005 • Changed text in the Catalyst EEPROM revision H table note from
“Revision H or higher not supported” to “Revision H is not supported”.
• Removed the Design and Layout Checklists. These checklists are now
separate Microsoft* Excel spreadsheets.
1.8 Jan 2005 Updated reference schematics to reflect current differential pair termination
resistor values for the 82547GI/EI.
Updated section 4.2.1 “Termination Resistors for Designs Based on 82562EZ/
EX PLC Device” to reflect current resistor and RBIAS values.
Updated section 4.3.1 “Termination Resistors for Designs Based on 8257GI(EI)
Gigabit Ethernet Controller” to reflect current resistor values.
1.9 June 2006 Updated reference schematics for signals EE_MODE and JTAG_TRST#
(changed resistor values from 1 K
Ω
to 100
Ω
).
2.0 Feb 2007 Updated sections 3.1.3, 3.1.1.8, and Table 5 in section 3.1.1 (changed max
ESR rate from 20
Ω
to 10
Ω
for the 82547GI/EI).
2.1 June 2007 Updated reference schematics: sheets 4 and 6.
2.2 Jan 2008 Added Table 6; approved crystals for the 82547GI(EI).