GS12281 datasheet(85/97 Pages) SEMTECH

85 / 97 page

GS12281

Final Data Sheet

Rev.9

PDS-061385

February 2019

85 of 97

Semtech

Proprietary & Confidential

www.semtech.com

EYE_MON_

SCAN_CTRL_1

RSVD

R/W

Reserved - do not modify.

CTRL_EYE_PHASE_



STEP

14:8

R/W

Unsigned value for phase step size.



Valid values are 1,2, and 4.



Reset value must be used for shape

scan.



Behaviour is undefined for other values.

In order to use a step size of 2 or 4,

CTRL_EYE_PHASE_START and

CTRL_EYE_PHASE_STOP must be set to

their default values.

RSVD

R/W

Reserved - do not modify.

CTRL_EYE_VERT_



OFFSET_START

6:0

R/W

Starting voltage offset.



Valid range is 0 to 255d.

EYE_MON_

SCAN_CTRL_2

CTRL_EYE_VERT_



OFFSET_STOP

15:8

R/W

Voltage offset limit.



Valid range is 0 to 255d.

CTRL_EYE_VERT_OFFSET_STOP must be

greater or equal to

CTRL_EYE_VERT_OFFSET_START. Reset

value must be used for shape scan.



In order to use a step size of 2 or 4,

CTRL_EYE_VERT_ OFFSET_START and

CTRL_EYE_VERT_ OFFSET_STOP must

be set to their default values.

RSVD

R/W

Reserved - do not modify.

CTRL_EYE_VERT_



OFFSET_STEP

6:0

R/W

Unsigned value for voltage offset step

size.



Valid values are 1,2, and 4.



Behaviour is undefined for other values.

Table 5-3: Control Register Descriptions (Continued)

Addressh

Name

Parameter Name

Bit

Slice

R/W

Reset

Valueh

Description

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