GS1515 Datasheet, PDF (1/17 Pages) Gennum Corporation – HDTV Serial Digital Reclocker

HD-LINX ^™ GS1515
HDTV Serial Digital Reclocker
FEATURES
• SMPTE 292M compliant
• fully automatic adjustment free reclocker for HDTV
signals
• 1.485Gb/s and 1.485/1.001Gb/s operation
• dual 75Ω co-axial cable driver outputs
• reclocker bypass mode
• seamless input Interface to the GS1504 HD adaptive
equalizer
• low power
• lock detect
• +5V or -5V power supply operation
• 44 pin MQFP
APPLICATIONS
SMPTE 292M Serial Digital Routers; SMPTE 292M Serial
Digital Distribution Amplifiers.
ORDERING INFORMATION
PART NUMBER
PACKAGE
GS1515-CQM
44 pin MQFP
GS1515-CTM
44 pin MQFP Tape
TEMPERATURE
0°C to 70°C
0°C to 70°C
DESCRIPTION
PRELIMINARY DATA SHEET
The GS1515 HDTV Serial Digital Reclocker is designed to
automatically recover the embedded clock signal and re-
time the data from a SMPTE 292M compliant digital video
signal.
An internal low pass filter removes the high frequency jitter
components from the bit-serial stream. 100Ω differential
input termination is on-chip for seamless matching to 50Ω
transmission lines. A dual SMPTE 292M compliant output
Cable Driver is also included on-chip. The GS1515 uses the
GO1515 external VCO connected to the internal PLL
circuitry in order to achieve ultra low noise PLL
performance.
Two diagnostic features are included in the GS1515 for
robust system design. The Input Jitter Indicator (IJI)
indicates excessive input jitter before the Serial Digital
outputs are muted and the Jitter Demodulator Function
(DM) helps to debug systems and locate the source of jitter.
The GS1515 is packaged in a 44 pin MQFP package and
requires a single 5V power supply. The GS1515 typically
draws 100mA of current.
LFS
LFS PLCAP PLCAP
IJI
LFA
GO1515
VCO
VCO
CHARGE
PUMP
PHASE
DETECTOR
PHASE
LOCK
MUTE
LOGIC
JITTER
DEMODULATOR
DDI
DDI_V_TT
DDI
50
INPUT
BUFFER
50
PATENT PENDING
BYPASS
BYPASS
CABLE
DRIVER
R_SET
BLOCK DIAGRAM
PLL_LOCK
DM
DM
DFT_V_EE
SDO
SDO
Revision Date: January 2000
Document No. 522 - 23 - 01
GENNUM CORPORATION P.O. Box 489, Stn. A, Burlington, Ontario, Canada L7R 3Y3
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