參數資料
型號: KSZ8851SNL-BBE-EVAL
廠商: Micrel Inc
文件頁數: 11/80頁
文件大?。?/td> 0K
描述: BOARD EVAL MAC/PHY FOR KSZ8851
軟件下載: KSZ8851SNL Linux Driver
Linus' GIT Repo
View Driver
設計資源: Zippy2 Schematic
BeagleBoard Zippy2
KSZ8851SNL-BBE-EVAL Bill of Materials
特色產品: Zippy 2
標準包裝: 1
系列: LinkMD®
主要目的: 接口,以太網控制器(PHY 和 MAC)
嵌入式:
已用 IC / 零件: KSZ8851SNL
主要屬性: 1 個端口,100BASE-TX/10BASE-T
次要屬性: SPI 接口,LinkMD 線纜診斷
已供物品: 板,硬件
產品目錄頁面: 1114 (CN2011-ZH PDF)
其它名稱: 576-3602
KSZ8851SNL-BBE-EVL
ZIPPY2
Micrel, Inc.
KSZ8851SNL/SNLI
August 2009
19
M9999-083109-2.0
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 5. Auto Negotiation and Parallel Operation
LinkMD
Cable Diagnostics
The KSZ8851SNL LinkMD
uses time domain reflectometry (TDR) to analyze the cabling plant for common cabling
problems such as open circuits, short circuits, and impedance mismatches.
LinkMD
works by sending a pulse of known amplitude and duration down the MDI and MDI-X pairs and then analyzes
the shape of the reflected signal. Timing the pulse duration gives an indication of the distance to the cabling fault with a
maximum distance of 200m and an accuracy of ±2m. Internal circuitry displays the TDR information in a user-readable
digital format in register P1SCLMD[8:0].
Note: cable diagnostics are only valid for copper connections – fiber-optic operation is not supported.
Access
LinkMD
is initiated by accessing register P1SCLMD, the PHY special control/status and LinkMD register (0xF4).
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