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GS3490 数据表(PDF) 4 Page - Gennum Corporation

部件名 GS3490
功能描述  Low power operation from a single
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制造商  GENNUM [Gennum Corporation]
网页  http://www.gennum.com
标志 GENNUM - Gennum Corporation

GS3490 数据表(HTML) 4 Page - Gennum Corporation

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GS3490
Final Data Sheet
Rev. 1
GENDOC-058568
April 2014
4 of 22
Proprietary & Confidential
www.semtech.com
8
EQ_GAIN_SEL
Input
Input Sensitivity Control.
Please refer to the input logic parameter in Table 2-2: DC
Electrical Characteristics for logic level threshold and
compatibility. This pin is a 3.3V input.
When HIGH, the device compensates for an additional 6dB
of loss across the entire operating band.
This pin has an internal 100k
Ω pull-down resistor.
9, 10
AGC/AGC
External AGC capacitor connection.
12
NC
No Connect. Not bonded internally.
13
EQ_BYPASS
Input
Equalizer Bypass Control.
Please refer to the input logic parameter in Table 2-2 for
Logic Level threshold and compatibility.
For details on operation, refer to Section 4.1.3.
This pin has an internal 100k
Ω pull-down resistor.
14
EQ_SQ_ADJ
Input
Squelch Threshold Adjust.
For details on operation, refer to Section 4.1.5.
This pin has an internal 82.4k
Ω pull-down resistor.
15
EQ_OP_CTL
Input
Controls the Output Swing, De-emphasis and Mute
features of the DDO/DDO outputs.
For details on operation, refer to Section 4.1.7.
This pin has an internal 1M
Ω pull-down resistor.
16
CD_SD_EN
Input
Cable Driver Slew Rate Control.
For details on operation, refer to Section 4.2.4.
When left unconnected, the default state of this pin is logic
HIGH
17, 26, 31, 32
VCC
Power
Most positive power supply connection.
Connect to 3.3V DC.
18, 19
DDI/DDI
Input
Differential digital data input to cable driver core.
22, 23
DDO/DDO
Output
Differential digital data output from cable equalizer core.
27
RSET
External cable driver output amplitude control resistor
connection.
28
EQ_DISABLE
Input
Equalizer Mode Disable Control.
Please refer to the input logic parameter in Table 2-2 for
logic level threshold and compatibility.
For details on operation, refer to Section 4.1.1.
This pin has an internal 100k
Ω pull-down resistor.
Table 1-1: GS3490 Pin Descriptions (Continued)
Pin Number
Name
Type
Description


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