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What is GS1515?

This electronic component, produced by the manufacturer "Gennum Corporation", performs the same function as "HDTV Serial Digital Reclocker".


GS1515 Datasheet PDF - Gennum Corporation

Part Number GS1515
Description HDTV Serial Digital Reclocker
Manufacturers Gennum Corporation 
Logo Gennum Corporation Logo 


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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 75co-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. 100differential
input termination is on-chip for seamless matching to 50
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_VTT
DDI
50
INPUT
BUFFER
50
PATENT PENDING
BYPASS
BYPASS
CABLE
DRIVER
RSET
BLOCK DIAGRAM
PLL_LOCK
DM
DM
DFT_VEE
SDO
SDO
Revision Date: January 2000
Document No. 522 - 23 - 01
GENNUM CORPORATION P.O. Box 489, Stn. A, Burlington, Ontario, Canada L7R 3Y3
Tel. +1 (905) 632-2996 Fax. +1 (905) 632-5946 E-mail: [email protected]
www.gennum.com

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GS1515 equivalent
PIN DESCRIPTIONS
NUMBER
SYMBOL
1, 3, 4, 6, 7, 9, 10,
24, 25, 27, 29, 31,
33, 34, 36, 38
NC
2 LFS
5 LFA_VEE
8 LFA_VCC
11 LFA
12 DFT_VEE
13, 14
15, 18, 22
PLCAP,
PLCAP
SHIELD
16, 17
19
20, 21
23
26
28
30
32
35, 37
39, 40
41
42
VCO, VCO
DDI_VTT
DDI, DDI
PD_VCC
PD_VEE
CD_VEE
RSET
CD_VCC
SDO, SDO
DM, DM
IJI
PLL_LOCK
43 BYPASS
44 LFS
TYPE
DESCRIPTION
No connection. These pins are not bonded to the die.
INPUT
POWER
POWER
OUTPUT
POWER
INPUT
Loop filter capacitor connection.
Most negative power supply connection - loop filter circuitry.
Most positive power supply connection - loop filter circuitry.
Control signal output: control voltage for the external GO1515 VCO.
Most negative power supply connection - that enables the jitter demodulator
functionality, this pin should be connected to ground. If left floating, the DM
function is disabled resulting in a current saving of 340µA.
Control signal input: PLL lock detect time constant capacitor connection.
INPUT
INPUT
INPUT
POWER
POWER
POWER
INPUT
POWER
OUTPUT
OUTPUT
OUTPUT
OUTPUT
INPUT
INPUT
No connect pins separating the DDI inputs, the VCO inputs and the loop filter
components to improve noise performance. Connection to be made to ground
in most cases depending upon PCB performance.
Control signal inputs: differential inputs for the external VCO. The GO1515 has
single ended output. In this case, the VCO input is decoupled to ground.
Centre tap of the two 50on-chip termination resistors between the DDI and
the DDI inputs.
Differential inputs for the serial digital signals.
Most positive power supply connection - phase detector circuitry.
Most negative poser supply connection - phase detector circuitry.
Most negative power supply connection - cable driver circuitry.
Resistor used to set the serial digital output signal swing. It is connected
between here and ground with a very short trace length.
Most positive power supply connection - cable driver circuitry.
Differential serial digital outputs from the on-chip cable driver. These outputs
require 75pull-up resistors.
Diagnostic signal: if the jitter demodulator function is not used, these pins must
be left floating.
Status signal output: indicates the amount of excessive jitter on the incoming
DDI and DDI signals.
Status signal output: lock detect and carrier detect: PLL lock indicator output
used to indicate when the PLL is locked. This output is TTL compatible. When
the PLL_LOCK = LOW, the serial digital outputs are muted.
Control signal input: operational TTL compatible input that controls whether the
input DDI and DDI signal is reclocked (BYPASS = HIGH) or is passed through
the device, unreclocked (BYPASS = LOW). Muting does not affect the
bypassed signal.
Loop filter capacitor connection.
5
522 - 23 - 01


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Part Details

On this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for GS1515 electronic component.


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