82596CA Datasheet, PDF (35/76 Pages) Intel Corporation – HIGH-PERFORMANCE 32-BIT LOCAL AREA NETWORK COPROCESSOR

82596CA
The format of the Configure command is shown in Figure 23 24 and 25
31
ODD WORD
16 15
EVEN WORD
0
EL S I X X X X X X X X X X 0 1 0 C B OK A 0 0 0 0 0 0 0 0 0 0 0 0 0
Byte 1
Byte 0
A15
LINK OFFSET
A0 4
Byte 5
Byte 4
Byte 3
Byte 2
8
Byte 9
Byte 8
Byte 7
Byte 6
12
XXXXXXXXXXXXXXXXXX X XXXXX
Byte 10
16
Figure 23 CONFIGURE 82586 Mode
31
EL S
I 000
Byte 1
Byte 5
Byte 9
Byte 13
ODD WORD
0000
0000
Byte 0
Byte 4
Byte 8
Byte 12
16 15
EVEN WORD
1 0 C B OK A 0 0 0 0 0 0 0 0 0 0
A15
LINK OFFSET
Byte 3
Byte 2
Byte 7
Byte 6
Byte 11
Byte 10
0
0 00
A0 4
8
12
16
Figure 24 CONFIGURE 32-Bit Segmented Mode
31
ODD WORD
16 15
EVEN WORD
0
EL S I 0 0 0 0 0 0 0 0 0 0 0 1 0 C B OK A 0 0 0 0 0 0 0 0 0 0 0 0 0
A31
LINK ADDRESS
A0 4
Byte 3
Byte 2
Byte 1
Byte 0
8
Byte 7
Byte 6
Byte 5
Byte 4
12
Byte 11
Byte 10
Byte 9
Byte 8
16
XXXXXXXXXXXXXXXX
Byte 13
Byte 12
20
LINK ADDRESS
EL B C I S
A
Bits 19–28
CMD (bits 16–18)
Figure 25 CONFIGURE Linear Mode
As per standard Command Block (see the NOP command for details)
Indicates that the command was abnormally terminated due to a CU Abort control com-
mand If 1 then the command was aborted and if necessary it should be repeated If this
bit is 0 the command was not aborted
Reserved (zero in the 32-Bit Segmented and Linear Modes)
The CONFIGURE command Value 2h
The interpretation of the fields follows
7
6
5
4
3
2
1
0
P
X
X
X
BYTE COUNT
BYTE 0
BYTE CNT (Bits 0–3)
PREFETCHED (Bit 7)
Byte Count Number of bytes including this one that hold pa-
rameters to be configured
Enable the 82596 to write the prefetched bit in all prefetch
RBDs
35