參數(shù)資料
型號: KSZ8841-16MQL A6
廠商: Micrel Inc
文件頁數(shù): 31/105頁
文件大?。?/td> 0K
描述: IC MAC CTRLR 8/16BIT 128-PQFP
標(biāo)準(zhǔn)包裝: 66
控制器類型: 以太網(wǎng)控制器,MAC
接口: 總線
電源電壓: 3.1 V ~ 3.5 V
工作溫度: 0°C ~ 70°C
安裝類型: 表面貼裝
封裝/外殼: 128-BFQFP
供應(yīng)商設(shè)備封裝: 128-PQFP(14x20)
包裝: 托盤
配用: 576-1631-ND - BOARD EVALUATION KSZ8841-16MQL
Micrel, Inc.
KSZ8841-16/32 MQL/MVL/MBL
October 2007
31
M9999-102207-1.6
Auto Negotiation
The KSZ8841M conforms to the auto negotiation protocol as described by the 802.3 committee to allow the port to
operate at either 10Base-T or 100Base-TX.
Auto negotiation allows unshielded twisted pair (UTP) link partners to select the best common mode of operation. In auto
negotiation, the link partners advertise capabilities across the link to each other. If auto negotiation is not supported or the
link partner to the KSZ8841M is forced to bypass auto negotiation, the mode is set by observing the signal at the receiver.
This is known as parallel mode because while the transmitter is sending auto negotiation advertisements, the receiver is
listening for advertisements or a fixed signal protocol.
The link setup is shown in the following flow diagram (Figure 9).
Force Link Setting
Listen for 10BASE-T Link
Pulses
Listen for 100BASE-TX
Idles
Attempt Auto
Negotiation
Link Mode Set
Bypass Auto Negotiation
and Set Link Mode
Link Mode Set ?
Parallel
Operation
Join Flow
NO
YES
Start Auto Negotiation
Figure 9. Auto Negotiation and Parallel Operation
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