FW82801ER S L742 Intel, FW82801ER S L742 Datasheet - Page 294
FW82801ER S L742
Manufacturer Part Number
FW82801ER S L742
Description
Manufacturer
Intel
Datasheet
1.FW82801ER_S_L742.pdf
(671 pages)
Specifications of FW82801ER S L742
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LAN Controller Registers (B1:D8:F0)
7.2.8
294
Note: It is recommended that software not use this register unless receive interrupt latency is a critical
EREC_INTR—Early Receive Interrupt Register
(LAN Controller—B1:D8:F0)
Offset Address:
Default Value:
The Early Receive Interrupt register allows the internal LAN controller to generate an early
interrupt depending on the length of the frame. The LAN controller will generate an interrupt at the
end of the frame regardless of whether or not Early Receive Interrupts are enabled.
performance issue in that particular software environment. Using this feature may reduce receive
interrupt latency, but will also result in the generation of more interrupts, which can degrade
system efficiency and performance in some environments.
Bit
7:0
Early Receive Count — R/W. When some non-zero value x is programmed into this register, the
LAN controller will set the ER bit in the SCB status word register and assert INTA# when the byte
count indicates that there are x quadwords remaining to be received in the current frame (based on
the Type/Length field of the received frame). No Early Receive interrupt will be generated if a value of
00h (the default value) is programmed into this register.
18h
00h
Intel
Description
Attribute:
Size:
®
82801EB ICH5 / 82801ER ICH5R Datasheet
R/W
8 bits
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