GS3590 datasheet(40/118 Pages) SEMTECH

40 / 118 page

GS3590

Final Data Sheet Rev.4



PDS-061414 September 2017

40 of 118

Semtech

Proprietary & Confidential

www.semtech.com

Figure 4-10: Shape-Scan Flow Diagram

Host determines Eye Width and Eye Height by reading from

the following 4 registers:

le = STAT_EYE_SHAPE_LEFT_EDGE_PHASE

re = STAT_EYE_SHAPE_RIGHT_EDGE_PHASE

pe =STAT_EYE_SHAPE_POS_EDGE_OFFSET

ne =STAT_EYE_SHAPE_NEG_EDGE_OFFSET

if pe > ne:

EyeHeight = (256 + ne - pe)

else:

EyeHeight = (ne - pe)

if le > re:

EyeWidtht = (128 + re - le)

else:

EyeWidtht = (re - le)

Host reads scan status from

STAT_EYE_MON_STATUS

Status

1 or 0

Host Resets Eye Scanner for new scan by

setting CTRL_EYE_MON_START = 0

Or power down by setting

CTRL_EYE_MON_POWER_CTRL = 0

Scan Failed

Reset Eye Scanner

Run Shape Scan

Shape Scan

Complete

Host powers up eye monitor and starts

Shape Scan by setting:

CTRL_EYE_MON_POWER_CTRL = 1

CTRL_EYE_MON_START = 1

Please Note the Following:

- While the Eye Monitor is

powered-up, the Cable Equalizer

input only has partial adaptation

enabled

- Status = STAT_EYE_MON_STATUS

Note: the host can write

CTRL_EYE_MON_POWER_CTRL = 1 and

CTRL_EYE_MON_START = 1 in the

same GSPI write (i.e. at the

same time). It is not necessary to set

the power up first.

Status = 0?

GS3590 Datasheet(PDF) 40 Page - Semtech Corporation

GS3590 Datasheet(HTML) 40 Page - Semtech Corporation

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL