GS3590 datasheet(89/118 Pages) SEMTECH

89 / 118 page

GS3590

Final Data Sheet Rev.4



PDS-061414 September 2017

89 of 118

Semtech

Proprietary & Confidential

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OUTPUT_

PARAM_TD_

SD_0

RSVD

15:13

R/W

Reserved—do not modify.

CFG_OUTPUT1_TD_



SD_PREEMPH_WIDTH

12:8

R/W

Configure the Trace Driver SD

pre-emphasis pulse width.

Range: 0 to 15d.

Adjust the pre-emphasis pulse width to

better match the channel loss response

shape.

Note: By default, the Trace Driver SD

settings are applied for all rates (see

CTRL_OUTPUT1_TRDR_PER_RATE for

per rate setting).

RSVD

7:7

R/W

Reserved—do not modify.

CFG_OUTPUT1_TD_



SD_PREEMPH_



PWRDWN

6:6

R/W

Trace Driver SD Pre-Emphasis Power

Down

DDO power down control for

pre-emphasis driver.

0 = Pre-emphasis driver powered up

(pre-emphasis enabled)



1 = Pre-emphasis driver powered down

(pre-emphasis disabled)

Note: By default, the Trace Driver SD

settings are applied for all rates (see

CTRL_OUTPUT1_TRDR_PER_RATE for

per rate setting).

CFG_OUTPUT1_TD_



SD_PREEMPH_AMPL

5:0

R/W

Configure the Trace Driver SD

pre-emphasis pulse amplitude.

Range = 0d to 50d

Adjust the pre-emphasis pulse

amplitude to better match the channel

loss at Nyquist.

Note: By default, the Trace Driver SD

settings are applied for all rates (see

CTRL_OUTPUT1_TRDR_PER_RATE for

per rate setting).

Table 5-3: Control Register Descriptions (Continued)

Addressh

Name

Parameter Name

Bit

Slice

R/W

Reset

Valueh

Description

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