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GS2986 Datasheet(PDF) 6 Page - Semtech Corporation

Part # GS2986
Description  Multi-Rate SDI Reclocker with Equalization & De-emphasis
PDF  41 Pages
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Manufacturer  SEMTECH [Semtech Corporation]
Direct Link  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

GS2986 Datasheet(HTML) 6 Page - Semtech Corporation

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GS2986 Multi-Rate SDI Reclocker with Equalization &
De-emphasis
Data Sheet
52134 - 3
July 2012
6 of 41
1.2 Pin Descriptions
Table 1-1: GS2986 Pin Descriptions
Pin Number
Name
Type
Description
1
CP_CAP
Power
External capacitor for internal LDO regulator supplying the charge pump
circuit.
2, 4
DDI0, DDI0
Input
Serial Digital Differential Input 0.
3HIF
Logic Input
Host interface selection pin. Active-low input. See Section 4.15.1.
5, 6
DDI1, DDI1
Input
Serial Digital Differential Input 1.
7, 8
DDI2, DDI2
Input
Serial Digital Differential Input 2.
9, 10
DDI3, DDI3
Input
Serial Digital Differential Input 3.
11
RSVD
Reserved
Reserved pin. Do not connect to this pin.
12, 13
DDI_SEL[0:1]
Logic Input
Selects one of four serial digital input signals for processing. See
Section 4.4.
14
VCC_VCOPower
Most positive power supply connection for the internal
VCO section. Connect to a 3.3V supply with a 422
Ω resistor, or to a 2.5V
supply with a 267
Ω resistor.
15
VEE_VCOPower
Most negative power supply connection for the internal
VCO section. Connect to GND.
16
VDD_1P8
Power
External capacitor for internal 1.8V digital supply.
17
LOCKED
Output
Lock Detect status signal. HIGH when the PLL is locked.
18
LOS
Output
Loss Of Signal status. HIGH when the input signal is invalid.
19
VDD_DIG
Power
Most positive power supply connection for the digital core.
Connect to 3.3V or 2.5V.
20
VSS_DIG
Power
Most negative power supply for the digital core.
Connect to GND.
21
SD/HD
Output
This signal will be LOW for all rates other than 270Mb/s.
This signal is HIGH for 270Mb/s.
22
DDO1_DISABLE
Logic Input
Disables the DDO1/RCO and DDO1/RCO outputs
when LOW.
See Section 4.14.
23, 24
DDO1/RCO,
DDO1/RCO
Output
Differential serial clock or data outputs.
25
VCC_DDO1
Power
Most positive power supply connection for the DDO1/DDO1 output driver.
Connect to 3.3V or 2.5V.
26
VEE_DDO1
Power
Most negative power supply connection for the DDO1/DDO1 output
driver. Connect to GND.
27, 28
DDO0, DDO0
Output
Differential Serial Digital Outputs.



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