參數(shù)資料
型號： IXF1010
廠商： INTEL CORP
元件分類： 微控制器/微處理器
英文描述： 10 CHANNEL(S), 1000M bps, LOCAL AREA NETWORK CONTROLLER, CBGA552
封裝： 25 X 25 MM, 1 MM PITCH, CERAMIC, BGA-552
文件頁數(shù)： 31/116頁
文件大?。?/td> 1392K
代理商： IXF1010
10-Port 100/1000 Mbps Ethernet MAC — IXF1010
Preliminary Datasheet
21
Document #: 249839
Revision #: 001
Rev. Date: April 29, 2002
3.1.2.3.6
Filter CRC Errored Packets
Frames received with an errored CRC are marked as bad frames and may optionally be dropped in
the RX FIFO. Otherwise, the frames are sent to the SPI4-2 and may be dropped by the switch or
system controller (see Table 5 on page 21).
3.1.2.4
PAUSE Command Frames
The MAC acts on any PAUSE Command frames received from the link partner by checking the
entire frame and verifying that it is a valid PAUSE control frame addressed to either the Multicast
Address (01-80-c2-00-00-01 as specified in IEEE 802.3, Annex 31B) or the Station Address. If the
PAUSE frame is valid, the Transmit side of the MAC pauses for the required number of Pause
Quanta, as specified in IEEE 802.3u, Clause 31 (see Table 4 on page 21).
Note:
PAUSE does not begin until completion of the frame currently being transmitted.
3.1.2.5
Auto-Negotiation
Auto-negotiation is carried out by the PHY connected to the RGMII interface. The IXF1010 should
communicate its supported abilities to the PHY. The PHY registers should be configured to select
the appropriate advertisements and enable auto-negotiation.
The MDIO interface block contains the logic through which the registers in the connected PHYs
can be accessed. For more information on the MDIO interface of the IXF1010, refer to Section 3.4,
Table 4.
Pause Packets Drop Enable Behavior
PauseFramePass
FrameDropEn
Actions
10
Packets are passed to the SPI4-2. They are not marked as bad
and are sent to the switch or Network Processor.
00
Packets are marked as bad but not dropped in the RX FIFO. These
packets are sent to the SPI4-2, but with an EOP Abort code to the
switch or Network Processor.
11
Packets are not marked as bad and sent to the switch or Network
Processor, regardless of the FrameDropEn setting.
01
PAUSE Packets are marked as bad, are dropped in the RX FIFO,
and never appear at the SPI4-2.
Table 5.
CRC Errored Packets Drop Enable Behavior
CRCErroredPASS
FrameDropEn
Actions
10
Packets are passed to the SPI4-2. They are not marked as bad
and are sent to the switch or Network Processor.
00
Packets are marked as bad but not dropped in the RX FIFO.
These packets are sent to the SPI4-2, but with an EOP Abort
code to the switch or Network Processor.
11
Packets are not marked as bad and are sent to the switch or
Network Processor regardless of the FrameDropEn setting.
01
CRC errored packets are marked as bad, dropped in the RX
FIFO, and never appear at the SPI4-2.
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