參數(shù)資料
型號: KSZ8893FQL
廠商: Micrel Inc
文件頁數(shù): 66/117頁
文件大?。?/td> 0K
描述: IC SWITCH FAST ETH 3PORT 128PQFP
標(biāo)準(zhǔn)包裝: 66
控制器類型: 以太網(wǎng)開關(guān)控制器
接口: MII,RMII,SNI
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: 576-1603-ND - EVAL KIT EXPERIMENTAL KSZ8893MQL
其它名稱: 576-1565
Micrel, Inc.
KSZ8893FQL
October 2007
52
M9999-101607-1.3
Loopback Support
The KSZ8893FQL provides loopback support for remote diagnostic of failure. In loopback mode, the speed at both PHY
ports needs to be set to 100Base-TX. Two types of loopback are supported: Far-end Loopback and Near-end
(Remote) Loopback.
Far-end Loopback
Far-end loopback is conducted between the KSZ8893FQL’s two PHY ports. The loopback path starts at the
“Originating.” PHY port’s receive inputs (RXP/RXM), wraps around at the “l(fā)oopback” PHY port’s PMD/PMA, and ends at
the “Originating” PHY port’s transmit outputs (TXP/TXM).
Bit [0] of registers 29 and 45 is used to enable far-end loopback for ports 1 and 2, respectively. Alternatively, the MII
Management register 0, bit [14] can be used to enable far-end loopback.
The far-end loopback path is illustrated in the following figure.
Figure 15. Far-End Loopback Path
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