参数资料
型号: KSZ8051MNL TR
厂商: Micrel Inc
文件页数: 20/59页
文件大小: 0K
描述: TXRX PHY 10/T100 3.3V MII 32-QFN
特色产品: KSZ8051/8031/8021 Series
标准包装: 1
类型: PHY 收发器
驱动器/接收器数: 1/1
规程: MII
电源电压: 1.8V,2.5V,3.3V
安装类型: 表面贴装
封装/外壳: 32-VFQFN 裸露焊盘
供应商设备封装: 32-QFN(5x5)
包装: 标准包装
配用: 576-3865-ND - BOARD EVALUATION FOR KSZ8051MNL
其它名称: 576-3777-6
Micrel, Inc.
KSZ8051MNL/RNL
July 2010
27
M9999-070910-1.0
Back-to-Back Mode – 100Mbps Copper Repeater / Media Converter
Two KSZ8051MNL/RNL devices can be connected back-to-back to form a 100Base-TX to 100Base-TX copper repeater.
A KSZ8051MNL/RNL and a KSZ8041FTL can be connected back-to-back to provide a low cost media converter solution.
Media conversion is between 100Base-TX copper and 100Base-FX fiber. On the copper side, link up at 10Base-T is not
allowed, and is blocked during auto-negotiation.
Figure 5. KSZ8051MNL/RNL and KSZ8041FTL Back-to-Back Media Converter
MII Back-to-Back Mode (KSZ8051MNL only)
In MII Back-to-Back mode, a KSZ8051MNL interfaces with another KSZ8051MNL, or a KSZ8041FTL to provide a
complete 100Mbps copper repeater, or media converter solution, respectively.
The KSZ8051MNL devices are configured to MII Back-to-Back mode after power-up or reset with the following:
Strapping pin CONFIG[2:0] (pins 18, 29, 28) set to ‘110’
A common 25MHz reference clock connected to XI (pin 9)
MII signals connected as shown in the following table.
KSZ8051MNL (100Base-TX copper)
[Device 1]
KSZ8051MNL (100Base-TX copper)
[Device 2]
Pin Name
Pin Number
Pin Type
Pin Name
Pin Number
Pin Type
RXC
19
Output
TXC
22
Input
RXDV
18
Output
TXEN
23
Input
RXD3
13
Output
TXD3
27
Input
RXD2
14
Output
TXD2
26
Input
RXD1
15
Output
TXD1
25
Input
RXD0
16
Output
TXD0
24
Input
TXC
22
Input
RXC
19
Output
TXEN
23
Input
RXDV
18
Output
TXD3
27
Input
RXD3
13
Output
TXD2
26
Input
RXD2
14
Output
TXD1
25
Input
RXD1
15
Output
TXD0
24
Input
RXD0
16
Output
Table 3. MII Signal Connection for MII Back-to-Back Mode (100Base-TX Copper Repeater)
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