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PDF GS8000 Data sheet ( Hoja de datos )
| Número de pieza | GS8000 | |
| Descripción | DVI / HDMI Extender | |
| Fabricantes | Gennum Corporation | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de GS8000 (archivo pdf) en la parte inferior de esta página. Total 16 Páginas | ||
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GS8000
DVI / HDMI Extender
GS8000 Data Sheet
Key Features
Description
• extends cable length of the TMDS and DDC channels of
a DVI or HDMI link
• DVI 1.0-compliant and HDMI 1.1-compliant input and
output signalling
• one device supports a complete single link DVI 1.0 or
HDMI interface (two devices for a dual link DVI interface)
• operational at TMDS rates from 252Mb/s to 1.65Gb/s
• supports display resolutions up to UXGA at 60Hz in 24-bit
true colour pixel format
• integrated user-tunable input termination resistors
• automatic identification of link inactivity with carrier detect
output
• output signal swing adjustable from 200mV to 2000mV
differential into 100Ω load
• output enable function
• superior noise immunity
• small footprint (44-pin QFN)
Applications
The GS8000 is Gennum’s DVI 1.0-compliant and HDMI
1.1-compliant automatic cable extender. When used in
front of a DVI/HDMI receiver, it produces a receive
solution with longer cable length. A DVI link of 20 to 30
metres at UXGA 60Hz (162Mb/s) can be realized with
the GS8000 provided the DVI transmitter is within the
DVI specification for jitter and voltage swing and that
high quality DVI cable is used.
The GS8000 contains an Output Enable input and
Carrier Detect output to allow for auto muting of the
clock and data outputs upon link inactivity.
Excellent power supply and common mode noise
rejection is employed to ensure robust operation in
noisy environments. The differential outputs are
adjustable and compatible with the DVI 1.0 and
A DVI or HDMI input that will only be connected to a DVI HDMI 1.1 receiver specifications for input common
output with launch amplitude between 800mV and
mode voltage and swing.
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DataShee
OE
RXC
RXC
RX0
RX0
RX1
RX1
RX2
RX2
DDC_SDA
DDC_SCL
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Signal Monitor
& Control
LONG REACH™ TMDS
LONG REACH™ TMDS
LONG REACH™ TMDS
LONG REACH™ TMDS
LONG REACH™ DDC
GS8000 Functional Block Diagram
SCDT
TXC
TXC
TX0
TX0
TX1
TX1
TX2
TX2
Proprietary and Confidential 25544 - 3 May 2005
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1 page  
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2. Electrical Characteristics
Table 2-1: Absolute Maximum Ratings
Parameter
Supply Voltage
Input Voltage Range (any input)
Operating Temperature Range
Storage Temperature Range
Lead Temperature (soldering 10 sec.)
GS8000 Data Sheet
Value
-0.3V to +3.6V
-2.0V to +5.25V
-20°C to 85°C
-50°C to 125°C
260°C
2.1 DC Electrical Characteristics
et4U.com
Table 2-2: DC Electrical Characteristics
VDD = 3.0V to 3.3V, TA = 0°C to 70°C, unless otherwise shown
Parameter
Symbol ConditDioantasSheet4U.coMmin
System
Operating Temperature Range
TA
–
Supply Voltage
Supply Voltage for
LONG REACH™ DDC
Supply Current
Supply Current for
LONG REACH™ DDC
System Power
ESD Protection
VDD
DDC_VDD
–
–
ID VDD = 3.3V, TA
= 25°C
O/P Swing = 1000mV
– DDC_VDD = 5V
PD VDD = 3.3V, TA
= 25°C
O/P Swing = 1000mV
– All pins
0
-20
3.0
4.75
–
–
–
2
DataShee
Typ Max Units Test Notes
Level
25 70
– 85
3.3 3.6
5.0 5.25
157 –
°C
°C
V
V
mA
–
–
1
1
1
1
2
1
1
–
– 15
519 –
mA
mW
1
5
–
–
– – kV –
3
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Proprietary and Confidential 25544 - 3 May 2005
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3.5 System Considerations
GS8000 Data Sheet
3.5.1 Device Power Up
Because the GS8000 was designed to operate in a multi-volt environment, any
power up sequence is allowed. The internal core and differential signal I/O buffers
may be powered up in any order.
Device pins may also be driven prior to power up without causing damage.
3.5.2 ESD Protection
The GS8000 has 2kV ESD protection on all pins. In addition, the device was
designed to work with ESD diodes on the input connectors. These external diodes
work with the chip to significantly increase overall system ESD protection.
The ESD diodes used in Gennum’s Application Reference Design (4.2 ESD
Diodes) provide ESD protection of greater than 8kV through air (test conducted in
accordance with IEC 61000-4-2 standard “Electrostatic Discharge Immunity Test”).
3.5.3 Cable Use
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The GS8000 was designed for best performance when used with DVI
1.0-compliant and HDMI 1.1-compliant cables meeting the approximate loss
characteristic shDoawtanSihneFeitg4uUre.c3o-m1: Cable Loss Characteristic.
1M 10M 100M 1G
0
-10
15m
-20
-30
30m
-40
-50
50m
-60
-70
-80
Frequency (Hz)
Figure 3-1: Cable Loss Characteristic
10G
DataShee
While the GS8000 will extend a range of DVI cable types and qualities, the device
gives optimum performance when used to extend high-quality cable.
Important parameters to consider when choosing a high quality DVI cable include
inter-pair and intra-pair skew. Cable length extension is maximized when cable
with low inter-pair and intra-pair skew is used. The GS8000 does not add
significant amounts of intra-pair or inter-pair skew. However, the skew added by
some long DVI cables can exceed the tolerance of some DVI receivers.
Proprietary and Confidential 25544 - 3 May 2005
DataSheet4U.com
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11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet GS8000.PDF ] | |
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