KS8721B Datasheet

PDF预览

• 1
• 2
• 3
• 4
• 5
• 6
• 7
• 8
• 9
• 10
• 11
• 12
• 13
• 14
• 15
• 16
• 17
• 18
• 19
• 20
• 21
• 22
• 23
• 24
• 25
• 26
• 27
• 28
• 29
• 30
• 31
• 32

KS8721B/BT

Micrel

KS8721B/BT

2.5V 10/100BasTX/FX MII Physical Layer Transceiver

Rev. 2.2

General Description

Operating at 2.5 volts to meet low voltage and low power

requirements, the KS8721B/BT is a 10BaseT/100BaseTX/

FX Physical Layer Transceiver, which provides an MII to

transmit and receive data. It contains the 10BaseT Physical

Medium Attachment (PMA), Physical Medium Dependent

(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.

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鈥檚 web site at www.micrel.com.

Features

鈥?Single chip 100BaseTX/100BaseFX/10BaseT physical

layer solution

鈥?2.5V CMOS design, power consumption <200mW

(excluding output driver current )

鈥?Fully compliant to IEEE 802.3u standard

鈥?Supports Media Independent Interface (MII) and

Reduced MII (RMII)

鈥?Supports 10BaseT, 100BaseTX and 100BaseFX with

Far_End_Fault Detection

鈥?Supports power down mode and power saving mode

鈥?Configurable through MII serial management ports or via

external control pins

鈥?Supports auto-negotiation and manual selection for

10/100Mbps speed and full/half-duplex mode

鈥?On-chip built-in analog front end filtering for both

100BaseTX and 10BaseT

Functional Diagram

TX+

TX-

Transmitter

10/100

Pulse

Shaper

NRZ/NRZI

MLT3 Encoder

4B/5B Encoder

Scrambler

Parallel/Serial

Parallel/Serial

Manchester Encoder

RX+

RX-

Adaptive EQ

Base Line

Wander Correction

MLT3 Decoder

NRZI/NRZ

Clock

Recovery

4B/5B Decoder

Descrambler

Serial/Parallel

MII/RMII

Registers

and

Controller

Interface

Auto

Negotiation

10BaseT

Receiver

Power

Down or

Saving

XI

XO

PLL

PWRDWN

Manchester Decoder

Serial/Parallel

TXD3

TXD2

TXD1

TXD0

TXER

TXC

TXEN

CRS

COL

MDIO

MDC

RXD3

RXD2

RXD1

RXD0

RXER

RXDV

RXC

LINK

LED

Driver

COL

FDX

SPD

Micrel, Inc. 鈥?1849 Fortune Drive 鈥?San Jose, CA 95131 鈥?USA 鈥?tel + 1 (408) 944-0800 鈥?fax + 1 (408) 944-0970 鈥?http://www.micrel.com

August 2003

1

KS8721B/BT

next

KS8721B相关型号PDF文件下载

• 型号
  版本
  描述
  厂商
  下载
• KS8701
  英文版
  FLEXTM Roaming Decoder II
  
  KS8701
• KS8701
  英文版
  FLEXTM Roaming Decoder II
  SAMSUNG [S...
  KS8701
• KS8737
  英文版
  Micrel Semiconductor [10/100 LV PHY FX]
  
  KS8737
• KS8721B
  英文版
  Micrel Semiconductor [2.5V 10/100BasTX/FX MII Physical Laye...
  
  KS8721B
• KS8721BI
  英文版
  IC TXRX PHY 10/100 2.5V 48SSOP
  
  KS8721BI
• KS8721BL
  英文版
  3.3V 10/100 BASE-TX/FX PHYSICAL LAYER TRANSCEIVER
  
  KS8721BL
• KS8721BL
  英文版
  3.3V 10/100 BASE-TX/FX PHYSICAL LAYER TRANSCEIVER
  MICREL [Mi...
  KS8721BL
• KS8721BT
  英文版
  2.5V 10/100BasTX/FX MII Physical Layer Transceiver
  
  KS8721BT
• KS8721SL
  英文版
  3.3V 10/100 BASE-TX/FX PHYSICAL LAYER TRANSCEIVER
  
  KS8721SL
• KS8721SL
  英文版
  3.3V 10/100 BASE-TX/FX PHYSICAL LAYER TRANSCEIVER
  MICREL [Mi...
  KS8721SL
• KS8721BLI
  英文版
  PHY 1-CH 10Mbps/100Mbps 48-Pin LQFP
  
  KS8721BLI
• KS8721SLI
  英文版
  IC TXRX PHY 10/100 3.3V 48SSOP
  
  KS8721SLI

您可能感兴趣的PDF文件资料

• KS8721BLI
• KS8721SLI
• KS8737
• KS8721SL
• KS8721SL
• KS8721BT
• KS8721BL
• KS8721BL
• KS8721BI
• KS8721B
• KS8701
• KS8701

热门IC型号推荐

• K9F6408U0C-TCB0
• KA9258D
• KH29LV160CBTC-70G
• KF25BD-TR
• K4T1G164QF-BCE6
• KTA1505S-Y-RTK/P
• K9F1208UOB-PCBO
• K4S561633F-ZL75
• KA7815ETU
• K9K8G08UOA-PCBO
• K4W1G1646G-BC11
• K4B2G1646E-BCK0