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GS12281 Datasheet(PDF) 74 Page - Semtech Corporation

Part # GS12281
Description  12G UHD-SDI Re-timing Cable Driver
PDF  97 Pages
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Manufacturer  SEMTECH [Semtech Corporation]
Direct Link  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

GS12281 Datasheet(HTML) 74 Page - Semtech Corporation

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GS12281
Final Data Sheet
Rev.9
PDS-061385
February 2019
74 of 97
Semtech
Proprietary & Confidential
www.semtech.com
31
OUTPUT_
PARAM_
CD_UHD_1
RSVD
15:14
R/W
0
Reserved - do not modify.
CFG_OUTPUT1_CD_
UHD_DRIVER_
SWING
13:8
R/W
1B
Configure the 6G/12G rate amplitude on
cable driver output1 (SDO1) in ~23mVpp
steps.
Functional Range = 9d to 31d
Precision Range = 24d to 30d
Default value = 27d(~800mVpp)
Note: In auto slew mode (CTRL_
OUTPUT1_AUTO_SLEW=1), the slew
rate is determined by the rate at which
the CDR is locked. If the CDR is
unlocked, the slew will default to
6G/12G Slew. See Table 2-3 for Rise/Fall
Times, and Section 4.7.3 for more details
on output driver selection.
RSVD
7:0
R/W
40
Reserved - do not modify.
32
OUTPUT_
PARAM_
CD_UHD_2
RSVD
15:13
R/W
0
Reserved - do not modify.
CFG_OUTPUT0_CD_
UHD_PREEMPH_
WIDTH
12:8
R/W
4
Configure the 6G/12G rate
pre-emphasis pulse width on cable
driver output0 (SDO0).
Range: 0 to 15d.
Adjust the pre-emphasis pulse width to
better match the channel loss response
shape.
Note: In auto slew mode (CTRL_
OUTPUT0_AUTO_SLEW=1), the slew
rate is determined by the rate at which
the CDR is locked. If the CDR is
unlocked, the slew will default to
6G/12G Slew. See Table 2-3 for Rise/Fall
Times, and Section 4.7.3 for more details
on output driver selection.
RSVD
7
R/W
0
Reserved - do not modify.
Table 5-3: Control Register Descriptions (Continued)
Addressh
Register
Name
Parameter Name
Bit
Slice
R/W
Reset
Valueh
Description



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