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GS1675 Datasheet(PDF) 5 Page - Semtech Corporation

Part # GS1675
Description  SD/HD SDI Reclocker
PDF  37 Pages
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Manufacturer  SEMTECH [Semtech Corporation]
Direct Link  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

GS1675 Datasheet(HTML) 5 Page - Semtech Corporation

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GS1675 SD/HD SDI Reclocker
Data Sheet
54174 - 1
June 2011
5 of 37
1.2 Pin Descriptions
Table 1-1: GS1675 Pin Descriptions
Pin Number
Name
Type
Description
1
LF+
Passive
Loop Filter Capacitor connection (CLF = 47nF). Connect as shown in the
Typical Application Circuit on page 30.
2
CP_CAP
Power
External capacitor for internal LDO regulator supplying the charge pump
circuit.
3, 5
DDI0, DDI0
Input
Serial Digital Differential Input 0.
4HIF
Logic Input
Host interface selection pin. Active-low input. See Section 3.14.1.
6, 7
DDI1, DDI1
Input
Serial Digital Differential Input 1.
8RSVD
Reserved
Reserved pin. Do not connect to this pin.
9VCC_VCOPower
Most positive power supply connection for the internal
VCO section. Connect to a 3.3V supply with a 422Ω resistor, or a 2.5V
supply with a 267Ω resistor.
10
VEE_VCOPower
Most negative power supply connection for the internal
VCO section. Connect to GND.
11
VDD_1P8
Power
External capacitor for internal 1.8V digital supply.
12
LOCKED
Output
Lock Detect status signal. HIGH when the PLL is locked.
13
LOS
Output
Loss Of Signal status. HIGH when the input signal is invalid.
14
VDD_DIG
Power
Most positive power supply connection for the digital core.
Connect to 3.3V or 2.5V.
15
VSS_DIG
Power
Most negative power supply for the digital core.
Connect to GND.
16SD/HD
Output
This signal will be LOW for all rates other than 270Mb/s.
This signal is HIGH for 270Mb/s.
17, 18
DDO1/RCO,
DDO1/RCO
Output
Differential serial clock or data outputs.
19
VCC_DDO1
Power
Most positive power supply connection for the DDO1/DDO1 output driver.
Connect to 3.3V or 2.5V.
20
VEE_DDO1
Power
Most negative power supply connection for the DDO1/DDO1 output
driver. Connect to GND.
21, 22
DDO0, DDO0
Output
Differential Serial Digital Outputs.
23
VCC_DDO0
Power
Most positive power supply connection for the DDO0/DDO0 output driver.
Connect to 3.3V or 2.5V.
24
VEE_DDO0
Power
Most negative power supply connection for the DDO0/DDO0 output
driver.
Connect to GND.
25
XTAL+
Output
Reference crystal output.



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