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LAN8720AI 参数 Datasheet PDF下载

LAN8720AI图片预览
型号: LAN8720AI
PDF下载: 下载PDF文件 查看货源
内容描述: 小尺寸RMII 10/100以太网收发器, HP Auto-MDIX的支持 [Small Footprint RMII 10/100 Ethernet Transceiver with HP Auto-MDIX Support]
分类和应用: 以太网局域网(LAN)标准
文件页数/大小: 79 页 / 1119 K
品牌: SMSC [ SMSC CORPORATION ]
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Small Footprint RMII 10/100 Ethernet Transceiver with HP Auto-MDIX Support  
Datasheet  
Table 2.1 RMII Signals  
BUFFER  
TYPE  
NUM PINS  
NAME  
SYMBOL  
DESCRIPTION  
Transmit  
Data 0  
TXD0  
VIS  
VIS  
The MAC transmits data to the transceiver using  
this signal.  
1
Transmit  
Data 1  
TXD1  
TXEN  
The MAC transmits data to the transceiver using  
this signal.  
1
1
Transmit  
Enable  
VIS  
(PD)  
Indicates that valid transmission data is present  
on TXD[1:0].  
Receive  
Data 0  
RXD0  
VO8  
Bit 0 of the 2 data bits that are sent by the  
transceiver on the receive path.  
PHY  
Operating  
Mode 0  
Configuration  
Strap  
MODE0  
VIS  
(PU)  
Combined with MODE1 and MODE2, this  
configuration strap sets the default PHY mode.  
1
See Note 2.1 for more information on  
configuration straps.  
Note:  
Refer to Section 3.7.2, "MODE[2:0]:  
Mode Configuration," on page 31 for  
additional details.  
Receive  
Data 1  
RXD1  
VO8  
Bit 1 of the 2 data bits that are sent by the  
transceiver on the receive path.  
PHY  
Operating  
Mode 1  
Configuration  
Strap  
MODE1  
VIS  
(PU)  
Combined with MODE0 and MODE2, this  
configuration strap sets the default PHY mode.  
1
See Note 2.1 for more information on  
configuration straps.  
Note:  
Refer to Section 3.7.2, "MODE[2:0]:  
Mode Configuration," on page 31 for  
additional details.  
Receive Error  
RXER  
VO8  
This signal is asserted to indicate that an error  
was detected somewhere in the frame presently  
being transferred from the transceiver.  
PHY Address  
0
Configuration  
Strap  
PHYAD0  
VIS  
(PD)  
This configuration strap sets the transceiver’s  
SMI address.  
1
See Note 2.1 for more information on  
configuration straps.  
Note:  
Refer to Section 3.7.1, "PHYAD[0]: PHY  
Address Configuration," on page 31 for  
additional information.  
Revision 1.4 (08-23-12)  
10  
SMSC LAN8720A/LAN8720Ai  
DATASHEET