GS3281 datasheet(90/97 Pages) SEMTECH

90 / 97 page

GS3281

Final Data Sheet

Rev.7

PDS-061453

January 2019

90 of 97

Semtech

Proprietary & Confidential

www.semtech.com

(Continued)

CURRENT_

STATUS_1

(Continued)

STAT_DETECTED_RATE

2:0

—

Rate at which the CDR is locked.



0 = Unlocked



1 = MADI (125Mb/s)



2 = SD (270Mb/s)



3 = HD (1.485Gb/s)



4 = 3G (2.97Gb/s)



5 = Reserved



6 = Reserved



7 = Reserved

RSVD

15:0

—

Reserved

PRBS_

CHK_

ERR_CNT

STAT_PRBS_CHK_



ERR_CNT

15:0

—

PRBS checker error count. Cleared to 0

at the start of a measurement. Updated

by the device on completion of a

measurement. Value is undefined in

case of abort due to loss of CDR lock

(STAT_PRBS_CHECK_LAST_ABORT = 1).

PRBS_

CHK_STATUS

RSVD

15:10

—

Reserved

STAT_PRBS_CHECK_



NODATA

9RO

—

0 = Normal



1 = No data transitions were seen

during the previous PRBS check. This bit

is set to 1 to indicate that the input data

was all 0's during a PRBS check. When

that happens, the error count will be

zero when in fact there was no valid

PRBS pattern.This bit is updated by the

device on completion of a

measurement. It retains its value until

the next PRBS check operation is

requested. Value is undefined in case of

abort

(STAT_PRBS_CHECK_LAST_ABORT = 1).

Value does not increment during a

measurement until it completes.

STAT_PRBS_CHECK_



LAST_ABORT

8RO

—

PRBS abort status.



0 = Normal.



1 = PRBS check was aborted due to loss

of lock or sleep.



This bit retains its value until the next

PRBS operation is requested.

RSVD

7:2

—

Reserved

Table 5-4: Status Register Descriptions (Continued)

Address

Name

Parameter Name

Bit

Slice

R/W

Reset

Value

Description

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