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参数资料
| 型号： | A82596SX |
| 厂商： | INTEL CORP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | HIGH-PERFORMANCE 32-BIT LOCAL AREA NETWORK COPROCESSOR |
| 中文描述： | 1 CHANNEL(S), 20M bps, LOCAL AREA NETWORK CONTROLLER, CPGA132 |
| 封装： | CERAMIC, PGA-132 |
| 文件页数： | 37/77页 |
| 文件大小： | 787K |
| 代理商： | A82596SX |
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82596DX/SX
Bits 19–28
D Reserved (zero in the 32-bit Segmented and Linear modes).
CMD (bits 16–18)
D The Address Setup command. Value: 1h.
INDIVIDUAL ADDRESS D 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.
#
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. When configuring the 12
th
byte (Byte 11
undefined) in 82586 mode this byte should be all ones.
#
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.
The format of the Configure command is shown in Figures 23, 24, and 25.
31
16
ODD WORD
15
0
EVEN WORD
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
A0
LINK OFFSET
4
Byte 5
Byte 4
Byte 3
Byte 2
8
Byte 9
Byte 8
Byte 7
Byte 6
12
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Byte 10
16
Figure 23. CONFIGURED82586 Mode
31
16
ODD WORD
15
0
EVEN WORD
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
Byte 1
Byte 0
A15
A0
LINK OFFSET
4
Byte 5
Byte 4
Byte 3
Byte 2
8
Byte 9
Byte 8
Byte 7
Byte 6
12
Byte 13
Byte 12
Byte 11
Byte10
16
Figure 24. CONFIGURED32-Bit Segmented Mode
37
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