GS1675 Gennum Corporation, GS1675 Datasheet
GS1675
Manufacturer Part Number
GS1675
Description
Sd/hd Sdi Reclocker
Manufacturer
Gennum Corporation
Datasheet
1.GS1675.pdf
(2 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
GS1675-IBEB
Manufacturer:
GENNUM
Quantity:
20 000
GS1675 SD/HD SDI Reclocker
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
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GS1675 SD/HD SDI Reclocker
Product Brief
56424 - A
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
January 2011
Typical Application Circuit
C33
Data Input 0
Data Input 1
SPI
GND
10u
VCC_VCO
VEE_VCO
(Pin10)
(Pin9)
C31
HIFb
CSb
SCK
SDO
SDI
VCO_SEL
1u
C30
47n
C3
10n
GND
R23
C4
220n
C34
www.gennum.com
27
28
29
30
2
3
5
6
7
4
8
1
2
JP5
422R
220n
GND
U2
U2
DDI0
DDI0
DDI1
DDI1
HIF
CS
SCK
SDO
SDI
NC
LF+
CP_CAP
VCC2
R24
1
267R
GS1675
DDO1/RCO
DDO1/RCO
VCC2
LOCKED
XTAL+
SD/HD
DDO0
DDO0
XTAL-
LOS
GND
VDD_DIG
C32
VSS_DIG
(Pin14)
(Pin15)
22
21
18
17
26
25
16
13
12
10n
•
•
•
•
•
•
•
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C20
Data Output 0
Data Output 1
VCC_DDO1
VEE_DDO1
10n
C23
SD/HD
LOS
LOCKED
(Pin19)
(Pin20)
ABM7-27.000MHZ-D2Y-T
R6
DNP
C27
1M
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
DNP
Y1
C2
18p
C13
GND
C1
10n
C15
18p
VCC_DDO0
VEE_DDO0
GND
DNP
(Pin23)
C16
(Pin24)
DNP
C7
10n
GND
VCC_CP
VEE_CP
(Pin32)
(Pin31)
1 of 2
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GS1675 Summary of contents
Page 1
... 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 ...
Page 2
... All other trademarks mentioned are the properties of their respective owners. GENNUM and the Gennum logo are registered trademarks of Gennum Corporation. © Copyright 2011 Gennum Corporation. All rights reserved. www.gennum.com GS1675 SD/HD SDI Reclocker Product Brief 56424 - A January 2011 CAUTION ELECTROSTATIC SENSITIVE DEVICES ...