XRT86VL32_07 datasheet(61/174 Pages) EXAR

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XRT86VL32

REV. V1.2.0

DUAL T1/E1/J1 FRAMER/LIU COMBO - E1 REGISTER DESCRIPTION

RxPRBSLock

Lock Status

This READ ONLY bit field indicates whether or not the Receive or

Transmit PRBS lock has obtained. The exact function of this bit

depends on whether PRBS switch function is enabled or not. (bit 3

in register 0xn121).

If the PRBS Switch function is disabled, E1 receive framer will

declare LOCK if PRBS/QRTS has locked onto the input pattern.

If the PRBS Switch function is disabled, E1 transmit framer will

declare LOCK if PRBS/QRTS has locked onto the input pattern.

0 = Indicates the Receive PRBS/QRTS has not Locked onto the

input patterns.

1 = Indicates the Receive PRBS/QRTS has locked onto the input

patterns.

RxPRBSEnb

R/W

Receive PRBS Detection/Generation Enable

This bit enables or disables the receive PRBS/QRTS pattern detec-

tion or generation. The exact function of this bit depends on whether

PRBS switch function is enabled or not. (bit 3 in register 0xn121).

If the PRBS switch function is disabled and if this bit is enabled, E1

Receive Framer will detect the incoming PRBS/QRTS pattern from

the line side and declare PRBS/QRTS lock if incoming data locks

onto the PRBS/QRTS pattern.

If the PRBS switch function and this bit are both enabled, E1 Trans-

mit Framer will detect the incoming PRBS/QRTS pattern from the

transmit backplane interface and declare PRBS/QRTS lock if incom-

ing data locks onto the PRBS/QRTS pattern.

0 = Disables the Receive PRBS/QRTS pattern detection.

1 - Enables the Receive PRBS/QRTS pattern detection.

TxPRBSEnb

R/W

Transmit PRBS Generation Enable

This bit enables or disables the Transmit PRBS pattern generator.

The exact function of this bit depends on whether PRBS switch

function is enabled or not. (bit 3 in register 0xn121).

If PRBS switch function is disabled, E1 Transmit Framer will gener-

ate the PRBS 15 or QRTS pattern to the line side if this bit is

enabled.

If PRBS switch function is enabled, E1 Receive Framer will gener-

ate the PRBS 15 or QRTS pattern to the receive backplane interface

if this bit is enabled.

0 = Disables the Transmit PRBS/QRTS pattern generator.

1 - Enables the Transmit PRBS/QRTS pattern generator.

RxBypass

R/W

Receive Framer Bypass

This bit enables or disables the Receive E1 Framer bypass.

0 = Disables the Receive E1 framer Bypass.

1 - Enables the Receive E1 Framer Bypass

TxBypass

R/W

Transmit Framer Bypass

This bit enables or disables the Transmit E1 Framer bypass.

0 = Disables the Transmit E1 framer Bypass.

1 - Enables the Transmit E1 Framer Bypass

TABLE 34: PRBS CONTROL AND STATUS REGISTER 1 (PRBSCSR1)

HEX ADDRESS: 0XN123

BIT

FUNCTION

TYPE

DEFAULT

DESCRIPTION-OPERATION

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