Table of Contents
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82543GC Gigabit Ethernet Controller Specification Update
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10
Default Speed Selection May Depend on EEPROM Presence
Link Status Change Interrupt Only Occurs If Link is Up
Early Transmit Feature Does Not Operate Correctly
TDO Output Not Floated When JTAG TAP Controller Inactive
Initialization Ignores Incorrect EEPROM Signature
Internal Loopback Difficulties
Collision Pin Not Ignored in TBI Mode
Receive Descriptor Writeback Problems for Packets Spanning
Multiple Buffers
Illegal Oversize Packets Overflow Receive FIFO
Transmit Descriptor Writeback Problem with Non-Zero
WTHRESH
Bus Initialization with Some Chipsets
Use of Receive Delay Timer Ring Register (RDTR) Causes
Occasional Lockups
Transmit TCP Checksum Modified if Calculated as 0x0000
SPECIFICATION CLARIFICATIONS
0-70C Ambient Temperature Range
Receiver Enabling and Disabling
DOCUMENTATION CHANGES
TX/RX Descriptor Register Addresses
Auto Speed Detect Function Requires CTRL.SLU Bit to Be Set
Values Programmed to Some Registers While in Reset Do Not
Persist
JTAG Port Operation
Register Summary Uses Improper Page Reference Format
Change O_EN_CDET output to NO_CONNECT
Change Recommended Tx IPG Programming Value for
10/100/1000BASE-T
Remove Transmit Report Status Sent Function
Remove Transmit DMA Pre-fetching and Preemption
Functions (TXDMAC)
Remove Transmit Burst Timer Control Function (TBT)
Remove Adaptive IFS Throttle Function (AIT)
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Page
Affected
Document
19
Datasheet
19
Developer's
Manual
Page
Affected
Document
19
Developer's
Manual
20
Developer's
Manual
20
Developer's
Manual
20
Datasheet and
Developer's
Manual.
20
Developer's
Manual
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Datasheet
21
Developer's
Manual
21
Developer's
Manual
21
Developer's
Manual
22
Developer's
Manual
22
Developer's
Manual
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