82596CA Datasheet, PDF (34/76 Pages) Intel Corporation – HIGH-PERFORMANCE 32-BIT LOCAL AREA NETWORK COPROCESSOR

82596CA
The format of the Individual Address Setup command is shown in Figure 22
IA Setup 82586 and 32-Bit Segmented Modes
31
ODD WORD
16 15
EVEN WORD
0
EL S I X X X X X X X X X X 0 0 1 C B OK A 0 0 0 0 0 0 0 0 0 0 0 0 0
INDIVIDUAL ADDRESS
1st byte A15
LINK OFFSET
A0 4
6th byte
5th byte
4th byte
3rd byte
8
31
EL S
A31
I 000
4th byte
ODD WORD
0000
IA Setup Linear Mode
16 15
EVEN WORD
0 0 0 0 0 1 C B OK A 0 0 0 0 0 0
LINK ADDRESS
3rd byte
INDIVIDUAL ADDRESS
6th byte
0000
1st byte
5th byte
0
0 00
A0 4
8
C
where
LINK ADDRESS
EL B C I S
A
Bits 19–28
CMD (bits 16–18)
INDIVIDUAL ADDRESS
Figure 22
As per standard Command Block (see the NOP command for details)
Indicates that the command was abnormally terminated due to CU Abort control
command If one then the command was aborted and if necessary it should be
repeated If this bit is zero the command was not aborted
Reserved (zero in the 32-bit Segmented and Linear modes)
The Address Setup command Value 1h
The individual address of the node 0 to 6 bytes long
The least significant bit of the Individual Address must be zero for Ethernet (see the Command Structure)
However no enforcement of 0 is provided by the 82596 Thus an Individual Address with 1 as its least
significant bit is a valid Individual Address in all aspects
The default address length is 6 bytes long as in 802 3 If a different length is used the IA Setup command
should be executed after the Configure command
Configure
The Configure command loads the 82596 with its operating parameters It allows changing some of the
parameters by specifying a byte count less than the maximum number of configuration bytes (11 in the 82586
mode 14 in the 32-Bit Segmented and Linear modes) The 82596 configuration depends on its mode of
operation When configuring the 12th byte (Byte 11 undefined) in 82586 mode this byte should be all ones
 In the 82586 mode the maximum number of configuration bytes is 12 Any number larger than 12 will be
reduced to 12 and any number less than 4 will be increased to 4
 The additional features of the serial side are disabled in the 82586 mode
 In both the 32-Bit Segmented and Linear modes there are four additional configuration bytes which hold
parameters for additional 82596 features If these parameters are not accessed the 82596 will follow their
default values
 For more detailed information refer to the 32-Bit LAN Components User’s Manual
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