KU82596CA33 S N222 Intel, KU82596CA33 S N222 Datasheet - Page 44

• Manufacturer Part Number: KU82596CA33 S N222
• Manufacturer: Intel

Specifications of KU82596CA33 S N222

• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 4.5V
• Mounting: Surface Mount
• Operating Temperature Classification: Industrial
• Lead Free Status / Rohs Status: Not Compliant

The interpretation of what is transmitted depends on the No Source Address insertion configuration bit and the
memory model being used
NOTES
1 The Destination Address and the Length Field are sequential The Length Field immediately follows the
2 In case the 82596 is configured with No Source Address insertion bit equal to 0 the 82596 inserts its
3 If the 82596 is configured with the Address Length Field Location equal to 1 the 82596 does not insert its
4 Frames which are aborted during transmission are jammed Such an interruption of transmission can be
Jamming Rules
1 Jamming will not start before completion of preamble transmission
2 Collisions detected during transmission of the last 11 bits will not result in jamming
The format of a Transmit Buffer Descriptor is
31
31
31
most significant byte of the Destination Address
configured Source Address in the transmitted frame
configured Source Address in the transmitted frame The first (2
transmitted frame are interpreted as Destination Address Source Address and Length fields respectively
The location of the first transmitted byte depends on the operational mode of the 82596
caused by any reason indicated by any of the status bits 8 9 10 and 12
X X X X X X X X
0
In the 82586 mode or when the Simplified memory model is used the Destination and Length fields of the
transmitted frame are taken from the Transmit Command Block
If the FLEXIBLE memory model is used the Destination and Length fields of the transmitted frame can be
found either in the TCB or TBD depending on the TCB COUNT
In the 82586 mode it is always the first byte of the first Tx Buffer
In both the 32-bit Segmented and Linear modes it depends on the SF bit and TCB COUNT
Transmit frames shorter than six bytes are invalid The transmission will be aborted (only in 82586 mode)
because of a DMA Underrun
In the Simplified memory mode the first transmitted byte is always the third byte after the TCB COUNT
field
In the Flexible mode if the TCB COUNT is greater than 0 then it is the third byte after the TCB COUNT
field If TCB COUNT equals 0 then it is first byte of the first Tx Buffer
0
0
0
0
NEXT TBD OFFSET
NEXT TBD OFFSET
0
ODD WORD
ODD WORD
ODD WORD
0
0
0
0
0
0
TRANSMIT BUFFER ADDRESS
TRANSMIT BUFFER ADDRESS
0
32-Bit Segmented Mode
NEXT TBD ADDRESS
0
0
Linear Mode
82586 Mode
Figure 31
16
16
16
0 EOF 0
TRANSMIT BUFFER ADDRESS
15
EOF X
15
EOF 0
15
13
13
13
c
EVEN WORD
EVEN WORD
EVEN WORD
Address Length)
SIZE (ACT COUNT)
SIZE (ACT COUNT)
SIZE (ACT COUNT)
a
2 bytes of the
82596CA
0
0
0
0
4
0
4
0
4
8
43