GS3281 datasheet(25/97 Pages) SEMTECH

25 / 97 page

GS3281

Final Data Sheet

Rev.7

PDS-061453

January 2019

25 of 97

Semtech

Proprietary & Confidential

www.semtech.com

Figure 4-4: Continuous PRBS Check Flow

Host sets

CTRL_PRBS_CHECK_TIMED_CONT_B = 0

CTRL_PRBS_CHECK_START = 1

Device Sets

STAT_PRBS_CHK_ERR_CNT = 0

Start Continuous PRBS Check

Measurement

YES

PRBS Error Check Completed

Successfully

User reads Error count from

STAT_PRBS_CHK_ERR_CNT

STAT_PRBS_CHECK_LAST_ABORT

= 1

Device Sets

STAT_PRBS_CHECK_STATUS =

STAT_PRBS_CHECK_STATUS

= 3

YES

Host sets

CTRL_PRBS_CHECK_START = 0

PRBS Checker is ready for new

operation

YES

Host sets

CTRL_PRBS_CHECK_START

STAT_PRBS_CHECK_STATUS

= 0

YES

STAT_PRBS_CHECK_STATUS

= 1

This step is to ensure that an error did

not occur between ending the PRBS

measurement and the last polling of

STAT_PRBS_CHECK_STATUS.

Host may terminate PRBS

measurement at anytime

by completing this action.

Device clears error count

And attempts to start PRBS

checker based on lock

condition of device

Loss of lock occurred during

measurement or at the

beginning of measurement

initiation. Error count is invalid

Resets PRBS

checker.

Prepares device

for next

operation

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