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GS1675 Folha de dados(PDF) 1 Page - Gennum Corporation

Nome de Peças GS1675
Descrição Electrónicos  Differential inputs and outputs
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Fabricante Electrônico  GENNUM [Gennum Corporation]
Página de início  http://www.gennum.com
Logo GENNUM - Gennum Corporation

GS1675 Folha de dados(HTML) 1 Page - Gennum Corporation

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GS1675 SD/HD SDI Reclocker
Data Sheet
54174 - 1
June 2011
GS1675 SD/HD SDI Reclocker
www.gennum.com
The GS1675 is a multi-rate serial digital reclocker designed to automatically recover the embedded clock from a digital video signal and
retime the incoming video data. It will recover the embedded clock signal and retime the data from a SMPTE 292M or SMPTE 259M-C
compliant digital video signal.
The GS1675 can operate in either Auto or Manual rate selection mode. In Auto mode, the device will automatically detect and lock onto
incoming SMPTE SDI data signals at SD and HD data rates. For single-rate data systems, the GS1675 can be configured to operate in
Manual mode. In both modes, the device requires only one external crystal to set the VCO frequency when not locked, and provides
adjustment-free operation. In systems which require passing non-SMPTE data rates, the GS1675 can be configured to either
automatically or manually enter a bypass mode in order to pass the signal without reclocking.
The GS1675 accepts industry-standard differential input levels including LVPECL and CML. The differential data and clock outputs
feature selectable output swing via the host interface, ensuring compatibility with most industry-standard, terminated differential
receivers. The GS1675 features dual differential outputs. The second output can be configured to emit either the recovered clock signal
or the re-timed video data.
Key Features
SMPTE 292M and SMPTE 259M-C compliant
Supports DVB-ASI at 270Mb/s
Single-supply operation at 3.3V or 2.5V
180mW typical power consumption (213mW with RCO
enabled) at 2.5V
2:1 input multiplexer patented technology
Choice of dual reclocked data outputs or one reclocked data
output and one clock output
Uses standard 27MHz crystal
Differential inputs and outputs
supports DC-coupling to industry-standard differential
logic
on-chip 100Ω differential data input/output termination
selectable 400mVppd or 800mVppd output swing on
each output
4-wire SPI host interface for device configuration and
monitoring
Standard logic control and status signal levels
Auto and Manual modes for rate selection
Standards indication in Auto mode
Lock Detect Output
Mute, Bypass and Autobypass functions
SD/HD indication output to control GS1678 or GS1679 cable
drivers
Operating temperature range: -40°C to +85°C
32 pin 5mm x 5mm QFN package
Pb-free and RoHS compliant
Forward pin-compatible with the Gennum's 3G GS2965
reclocker
Typical Application Circuit
(Pin15)
VEE_DDO1
VEE_DDO0
VEE_CP
(Pin20)
(Pin24)
(Pin31)
VEE_VCO
VSS_DIG
(Pin10)
VDD_DIG
(Pin19)
(Pin23)
(Pin32)
(Pin14)
VCC_DDO1
VCC_DDO0
VCC_CP
VCC_VCO
(Pin9)
VCO_SEL
Data Input 0
Data Input 1
Data Output 0
Data Output 1
SPI
GND
VCC2
GND
GND
GND
GND
GND
GND
VCC2
CSb
SCK
SDO
SDI
HIFb
SD/HD
LOS
LOCKED
Y1
ABM7-27.000MHZ-D2Y-T
C16
DNP
C13
10n
C2
18p
C30
10n
C4
220n
C20
10n
C27
DNP
R23
422R
JP5
1
2
R24
267R
C31
1u
C7
10n
C33
10u
C1
18p
R6
1M
U2
GS1675
U2
DDI0
3
HIF
4
DDI0
5
DDI1
6
DDI1
7
NC
8
LOCKED
12
LOS
13
DDO0
22
DDO0
21
DDO1/RCO
18
SD/HD
16
CP_CAP
2
LF+
1
SDI
30
SDO
29
SCK
28
CS
27
XTAL-
26
XTAL+
25
DDO1/RCO
17
C34
220n
C23
DNP
C15
DNP
C32
10n
C3
47n


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