WG82574L S LBA8 Intel, WG82574L S LBA8 Datasheet - Page 160

• Manufacturer Part Number: WG82574L S LBA8
• Manufacturer: Intel

Specifications of WG82574L S LBA8

• Operating Supply Voltage (typ): 3.3V
• Operating Temp Range: 0C to 85C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 64
• Lead Free Status / RoHS Status: Compliant

7.2.10.7
Figure 33.
7.2.11
Figure 34.
160
15
PRI
13
0
8
The TCP bit identifies the packet as either TCP or UDP (non-TCP). This affects the
processing of the header information.
Status - STA
Four bits are reserved to provide transmit status, although only one is currently
assigned for this specific descriptor type.
The status word will only be written back to host memory in cases where the RS bit is
set in the command. DD indicates that the descriptor is done and is written back after
the descriptor has been processed only if the RS bit was set.
Transmit Status Layout
Rsv (bits 3-1) - Reserved
DD (bit 0) - Descriptor Done
Extended Data Descriptor Format
CFI
Extended Data Descriptor Format
The extended data descriptor is the companion to the context descriptor described in
the previous section. This descriptor type points to the location of the data in the host
memory.
To select this descriptor format, bit 29 (TDESC.DEXT) must be set to 1b and
TDESC.DTYP must be set to 0x0001. In this case, the descriptor format is defined as
shown in
The first Qword of this descriptor type contains the address of a data buffer in host
memory. This buffer contains all or a portion of a transmit packet.
The second Qword of this descriptor contains information about the data pointed to by
this descriptor as well as descriptor processing options.
12
VLAN
Addresses
63
11
VLAN ID
3
0
Figure
7
RSV
Reserved
34.
2
2
48
TXSM IXSM
1
47
POPTS
0
40
3
RSV
1
39
1
ExtCMD
TS
0
36
3
RSV
Status
35
DD
0
1
STA
DD
0
IDE VLE DEXT RSV RS TSE
7
32
82574 GbE Controller—Inline Functions
31
6
DCMD
Command
5
24
23
DTYP
4
3
20
2
19
DTALEN
IFCS EOP
1
0
0