GS3590 datasheet(36/118 Pages) SEMTECH

36 / 118 page

GS3590

Final Data Sheet Rev.4



PDS-061414 September 2017

36 of 118

Semtech

Proprietary & Confidential

www.semtech.com

4.6.2 Matrix-Scan and Shape-Scan Operation

The previous section described the parameters used to adjust the spatial and temporal

eye scan settings. Each sample of the eye scan can record up to 65536 errors. A full eye

scan would require 64KB (256 x 128 x 2 Bytes) of memory to store the data of a full scan.

The Eye Monitor was implemented to use device resources more efficiently by

segmenting a full scan into several partial scan segments. Each partial scans segment

can contain up to 512B of scan data.

In the case of a full matrix-scan, there are 128 partial scan segments and each partial

scan segment contains two complete scan lines (2 x 128 x 2B = 512B). In the case of a

partial matrix-scan, each scan segment contains multiple partial scan lines including

partial lines (see Figure 4-8).

Table 4-6: Spatial Scan Configuration Parameters

Parameter Name

Description

5A, EYE_MON_ SCAN_CTRL_0

CTRL_EYE_PHASE_START

Horizontal phase start index

CTRL_EYE_PHASE_STOP

Horizontal phase stop index

5B, EYE_MON_ SCAN_CTRL_1

CTRL_EYE_PHASE_STEP

Horizontal phase step size

CTRL_EYE_VERT_OFFSET_START

Vertical offset start index

5C, EYE_MON_ SCAN_CTRL_2

CTRL_EYE_VERT_OFFSET_STOP

Vertical offset stop index

CTRL_EYE_VERT_OFFSET_STEP

Vertical offset step size

GS3590 Datasheet(PDF) 36 Page - Semtech Corporation