HFIXF1110CC Intel, HFIXF1110CC Datasheet - Page 60
HFIXF1110CC
Manufacturer Part Number
HFIXF1110CC
Description
Manufacturer
Intel
Datasheet
1.HFIXF1110CC.pdf
(183 pages)
Specifications of HFIXF1110CC
Number Of Transceivers
1
Screening Level
Commercial
Mounting
Surface Mount
Operating Temperature (min)
0C
Operating Temperature (max)
70C
Lead Free Status / RoHS Status
Not Compliant
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Intel
5.2.1.1
07-Oct-2005
60
®
Figure 10. Data Path State
IXF1110 10-Port 1000 Mbps Ethernet Media Access Controller
eight cycles (corresponding to multiples of 16-byte segmentations) or upon end-of-packet. A data
burst must immediately follow a payload control word on the next cycle. Arcs not annotated
correspond to single cycles.
In the IXF1110 MAC, the RX FIFO Status channel operates in a “pessimistic mode.” It is termed as
pessimistic because it has the longest latency and largest impact on usable bandwidth. However, as
a DIP-2 check error is a rare event, there will be no ‘real world’ effect on bandwidth utilization and
no possibility of data loss. For example, if there is a DIP-2 check error found, all previously
granted credits are cancelled and the internal status for each port is set to SATISFIED. Any current
data burst in transmission is completed. No new credits are granted until a complete FIFO status
cycle has been received and validated by a correct DIP-2 check. This is the only method of
operation that can eliminate the possibility of an overrun in the link partner device.
Control Words
A common control word format is used in both the transmit and receive interfaces.
describes the fields in the control word. When inserted in the data path, the control word is aligned
such that its MSB is sent on the MSB of the transmit or receive data lines. A payload control word
that separates two adjacent burst transfers contains status information pertaining to the previous
transfer and the following transfer.
Intel
®
IXF1110 10-Port 1000 Mbps Ethernet Media Access Controller
Order Number: 250210, Revision: 009
Table 19
provides a list of control-word definitions.
Table 18
Datasheet
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