PEB2256HT datasheet(247/490 Pages) INFINEON

247 / 490 page

FALC56 V1.2

PEB 2256

E1 Registers

Data Sheet

247

2002-08-27

Line Interface Mode 0 (Read/Write)

Value after reset: 00H

XFB

Transmit Full Bauded Mode

Only applicable for dual-rail mode (bit LIM1.DRS = 1).

0 =

Output signals XDOP/XDON are half bauded.

1 =

Output signals XDOP/XDON are full bauded.

Note: If CMI coding is selected (FMR0.XC(1:0) = 01) this bit has to

be cleared.

XDOS

Transmit Data Out Sense

0 =

Output signals XDOP/XDON are active low. Output XOID is

active high (normal operation).

1 =

Output signals XDOP/XDON are active high. Output XOID is

active low.

Note: If CMI coding is selected (FMR0.XC(1:0) = 01) this bit has to

be cleared.

The transmit frame marker XFM is independent of this bit.

EQON

Receive Equalizer On

0 =

-10 dB receiver, short-haul mode

1 =

-43 dB receiver, long-haul mode

RLM

Receive Line Monitoring

0 =

Normal receiver mode

1 =

Receiver mode for receive line monitoring;

the receiver sensitivity is increased to detect resistively

attenuated signals of -20 dB (short-haul mode only)

Local Loop

0 =

Normal operation

1 =

Local loop active. The local loop-back mode disconnects the

receive lines RL1/RL2 or RDIP/RDIN from the receiver. Instead

of the signals coming from the line the data provided by system

interface are routed through the analog receiver back to the

system interface. The unipolar bit stream is transmitted

LIM0

XFB

XDOS

EQON

RLM

MAS

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