參數(shù)資料
型號: KSZ8041FTLI TR
廠商: Micrel Inc
文件頁數(shù): 27/58頁
文件大小: 0K
描述: TXRX PHY 10/100 SGL LP 48TQFP
標(biāo)準(zhǔn)包裝: 1,000
類型: 收發(fā)器
驅(qū)動器/接收器數(shù): 1/1
規(guī)程: SMII
電源電壓: 3.135 V ~ 3.465 V
安裝類型: 表面貼裝
封裝/外殼: 48-TQFP
供應(yīng)商設(shè)備封裝: 48-TQFP(7x7)
包裝: 帶卷 (TR)
Micrel, Inc.
KSZ8041TL/FTL
April 2007
33
M9999-042707-1.1
Back-to-Back Media Converter
A KSZ8041FTL and a KSZ8041TL can be connected back-to-back to provide a low cost media converter solution. In
back-to-back mode, media conversion is between 100Base-FX fiber and 100Base-TX copper. On the copper side, link up
at 10Base-T is not allowed, and is blocked during auto-negotiation.
Figure 10. KSZ8041FTL / KSZ8041TL Back-to-Back Media Converter
The KSZ8041FTL and KSZ8041TL support MII Back-to-Back mode and RMII Back-to-Back mode for media conversion.
MII Back-to-Back Mode
The KSZ8041FTL and KSZ8041TL are configured in MII Back-to-Back mode after it is power-up or reset with the following:
CONFIG[2:0] (pins 27, 41, 40) set to ‘110’ for both KSZ8041FTL and KSZ8041TL.
A common 25 MHz reference clock connected to XI (pin 15) of both KSZ8041FTL and KSZ8041TL.
MII signals connected as shown in the following table between KSZ8041FTL in fiber mode and KSZ8041TL in
copper mode.
KSZ8041FTL in fiber mode
KSZ8041TL in copper mode
Pin Name
Pin Number
Pin Type
Pin Name
Pin Number
Pin Type
RXC
28
Output
TXC
33
Input
RXDV
27
Output
TXEN
34
Input
RXD3
20
Output
TXD3
39
Input
RXD2
21
Output
TXD2
38
Input
RXD1
22
Output
TXD1
36
Input
RXD0
23
Output
TXD0
35
Input
TXC
33
Input
RXC
28
Output
TXEN
34
Input
RXDV
27
Output
TXD3
39
Input
RXD3
20
Output
TXD2
38
Input
RXD2
21
Output
TXD1
36
Input
RXD1
22
Output
TXD0
35
Input
RXD0
23
Output
Table 12. MII Signal Connection for MII Back-to-Back Mode
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