ML6652EM 데이터 시트보기 (PDF) - Micro Linear Corporation

부품명

상세내역

제조사

ML6652EM

10/100Mbps Ethernet Fiber and Copper Media Converter with Auto-Negotiation

Micro Linear Corporation 

ML6652

PIN DESCRIPTIONS (continued)

Pin No. Signal Name

I/O

Description

DUPLEX and SPEED can be used concurrently to set the power up mode of

the ML6652 see Tables 4 and 6. For Mode details see the General Description

section of this data sheet.

27

SPEED

I

This input can have one of three levels: VCC, VCC/2, and 0Volts. The input

has 80kΩ resistors internally connected to both VCC and Ground generating

VCC/2 at the input, if left unconnected. Settings defined by the SPEED power

up preset pin can be over written by the management interface. At power up

the SPEED pin causes the following default values to be written to

management register 30.

Note: this pin is typically read a few microseconds after power-up. If it is tied

to supplies that do not track the ML6652 power, improper results will occur.

Use VCCD (pin 19) as the pull up point, do not add decoupling capacitors to

this input pin (without thoroughly understanding your PCB layout dynamics the

safest course is to make short connections and do not add decoupling

capacitors to this input pin).

SPEED Voltage

0

VCC/2

VCC

DSBLAN <30.14>

Default

1

0

1

SINGLESPEED <30.9>

Default

1

0

1

SEL10Mbps <30.8>

Default

1

0

0

Table 5.

Mode

Forced 10

Forced 100

Non-Transparent

Half-Duplex

Non-Transparent

Transparent

Operating Summary

SPEED Voltage

10Mbps data rate only available. The Duplex mode

0

is selected by the link partner.

100Mbps data rate only available. The Duplex mode

VCC

is selected by the link partner.

Only the Half-Duplex mode is advertised. Both 10

VCC/2

and 100Mbps data rates are available. Only the data

rate equivalent to the technology present at the fiber

optic input interface is advertised.

FLP Bursts are generated. Both Half-Duplex and

VCC/2

Full-Duplex modes are advertised. Both 10 and

100Mbps data rates are available. Only the data rate

equivalent to the technology present at the fiber optic

input interface is advertised.

Standard Auto-Negotiation sub-layer 10Mbps,

VCC/2

100Mbps and Auto-Negotiation far end link partner

signaling available.

DUPLEX Voltage

N/A

N/A

0

VCC

VCC/2

Table 6.

7

January 2004

Final Datasheet

DS6652-F-02

Share Link: