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KSZ8721B-TR

更新时间: 2024-11-14 14:51:55
品牌 Logo 应用领域
美国微芯 - MICROCHIP 局域网(LAN)标准以太网:16GBASE-T电信光电二极管电信集成电路
页数 文件大小 规格书
32页 2503K
描述
IC TXRX PHY 10/100 2.5V 48SSOP

KSZ8721B-TR 技术参数

是否无铅:不含铅生命周期:Not Recommended
包装说明:SSOP,Reach Compliance Code:compliant
Factory Lead Time:16 weeks风险等级:5.79
Is Samacsys:NJESD-30 代码:R-PDSO-G48
长度:15.875 mm功能数量:1
端子数量:48最高工作温度:70 °C
最低工作温度:封装主体材料:PLASTIC/EPOXY
封装代码:SSOP封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, SHRINK PITCH座面最大高度:2.794 mm
标称供电电压:2.5 V表面贴装:YES
技术:CMOS电信集成电路类型:ETHERNET TRANSCEIVER
温度等级:COMMERCIAL端子形式:GULL WING
端子节距:0.635 mm端子位置:DUAL
宽度:7.493 mmBase Number Matches:1

KSZ8721B-TR 数据手册

 浏览型号KSZ8721B-TR的Datasheet PDF文件第2页浏览型号KSZ8721B-TR的Datasheet PDF文件第3页浏览型号KSZ8721B-TR的Datasheet PDF文件第4页浏览型号KSZ8721B-TR的Datasheet PDF文件第5页浏览型号KSZ8721B-TR的Datasheet PDF文件第6页浏览型号KSZ8721B-TR的Datasheet PDF文件第7页 
KS8721B/BT  
2.5V 10/100BasTX/FX MII Physical Layer Transceiver  
Rev. 2.3  
General Description  
Features  
Operating at 2.5 volts to meet low voltage and low power  
requirements,theKS8721B/BTisa10BaseT/100BaseTX/FX  
PhysicalLayerTransceiver, whichprovidesanMIItotransmit  
and receive data. It contains the 10BaseT Physical Medium  
Attachment(PMA), PhysicalMediumDependent(PMD), and  
Physical Coding Sub-layer (PCS) functions. Moreover, the  
KS8721B/BT has on-chip 10BaseT output filtering, which  
eliminates the need for external filters and allows a single  
set of line magnetics to be used to meet requirements for  
both 100BaseTX and 10BaseT.  
• Single chip 100BaseTX/100BaseFX/10BaseT physical  
layer solution  
• 2.5V CMOS design, power consumption <200mW (ex-  
cluding output driver current )  
• Fully compliant to IEEE 802.3u standard  
• Supports Media Independent Interface (MII) and  
Reduced MII (RMII)  
• Supports 10BaseT, 100BaseTX and 100BaseFX with  
Far_End_Fault Detection  
• Supports power down mode and power saving mode  
• Configurable through MII serial management ports or via  
external control pins  
• Supports auto-negotiation and manual selection for  
10/100Mbps speed and full/half-duplex mode  
• On-chip built-in analog front end filtering for both 100Ba-  
seTX and 10BaseT  
The KS8721B/BT can automatically configure itself for 100  
or 10 Mbps and full or half duplex operation, using on-chip  
Auto-Negotiation algorithm. It is an ideal choice of physical  
layer transceiver for 100BaseTX/10BaseT applications.  
Data sheets and support documentation can be found on  
Micrel’s web site at www.micrel.com.  
Functional Diagram  
4B/5B Encoder  
NRZ/NRZI  
Scrambler  
TXD3  
MLT3 Encoder  
10/100  
Pulse  
TX+  
TX-  
Parallel/Serial  
TXD2  
TXD1  
TXD0  
TXER  
Transmitter  
Shaper  
Parallel/Serial  
Manchester Encoder  
TXC  
TXEN  
CRS  
COL  
MDIO  
MDC  
MII/RMII  
Registers  
and  
Adaptive EQ  
Base Line  
4B/5B Decoder  
Descrambler  
Serial/Parallel  
RX+  
RX-  
Clock  
Wander Correction  
MLT3 Decoder  
NRZI/NRZ  
Controller  
Interface  
Recovery  
RXD3  
RXD2  
RXD1  
RXD0  
RXER  
RXDV  
RXC  
Auto  
Negotiation  
10BaseT  
Receiver  
Manchester Decoder  
Serial/Parallel  
Power  
Down or  
Saving  
LINK  
COL  
FDX  
SPD  
LED  
XI  
Driver  
PLL  
XO  
PWRDWN  
Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com  
M9999-030106  
March 2006  
1

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