KS8721BT(2003) 데이터 시트보기 (PDF) - Micrel

부품명

상세내역

제조사

KS8721BT
(Rev.:2003)

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

Micrel 

KS8721B/BT

Micrel

Pin Number

37

38

39

40

41

42

43

44

45

46

47

48

Pin Name

REXT

VDDRCV

GND

TX-

TX+

VDDTX

GND

GND

XO

XI

VDDPLL

RST#

Type(Note 1)

I

Pwr

GND

O

O

Pwr

GND

GND

O

I

Pwr

Ipu

Pin Function

External resistor (6.49kΩ) connects to REXT and GNDRX.

Analog 2.5V power supply.

Ground

Transmit Outputs: Differential transmit output for 100BaseTX/FX or 10BaseT.

Transmit Outputs: Differential transmit output for FX, 100BaseTX/FX or 10BaseT.

Transmitter 2.5V power supply.

Ground.

Ground.

XTAL feedback: Used with XI for Xtal application.

Crystal Oscillator Input: Input for a crystal or an external 25MHz clock

Analog PLL 2.5V power supply.

Chip Reset: Active low, minimum of 50µs pulse is required

Note 1.

Pwr = power supply

GND = ground

I = input

O = output

I/O = bi-directional

Ipu = input w/ internal pull-up

Ipd = input w/ internal pull-down

Ipd/O = input w/ internal pull-down during reset, output pin otherwise

Ipu/O = input w/ internal pull-up during reset, output pin otherwise

PU = strap pin pull-up

PD = strap pin pull-down

NC = No connect

KS8721B/BT

8

August 2003

Share Link: