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Pericom Semiconductor Corporation

PI3VST01 Datasheet Preview

PI3VST01 Datasheet

HPD signal Generator

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PI3VST01
HPD signal Generator for VGA
Features
ÎÎHot Plug Detect Signal Generator for VGA connectors
ÎÎGenerates hot plug output signal telling system when
monitor is present or not
ÎÎPower Supply, 3.3V and 5.0V
ÎÎESD tolerance on pin 7 is up to +/-4kV contact per
IEC61000-4-2 specification
ÎÎ-3dB BW of 1.7GHz (typ)
ÎÎ4.75 Ohm On Resistance with 0.5 Ohm flatness (typ)
ÎÎLow input/output capacitance (Con = 4.5pF, typ)
ÎÎPackaging (Pb-free and Green):
àà 8-contact MSOP (U)
Description
The VGA connector does not have a hot-plug pin to tell the sys-
tem that a monitor is connected. More recent video standards,
such as HDMI and DisplayPort, save power by adding a hot-plug
pin which allows graphics outputs to be powered down when a
monitor is not connected.
Pericom’s PI3VST01 HPD signal generator generates a monitor
detection signal from a VGA source connector to tell the VGA
source if an external monitor is connected or not.
PI3VST01 allows notebook makers to shut off the VGA DAC
when a monitor is not connected, thus saving 170 mW per DAC.
PI3VST01 dissipates only 0.66 mW.
The monitor detection scheme within the PI3VST01 will not
affect normal operation of the video driver.
Block Diagram
BIN
VSYNC
Logic
Control
Pin Configuration-U8 (Top View)
BOUT
Detector
HPD_OUT
GND
VDD5
BIN
VSYNC
HPD_OUT
VDD3
BOUT
Rref
RREF
All trademarks are property of their respective owners.
15-0090
1
www.pericom.com 07/08/15




Pericom Semiconductor Corporation

PI3VST01 Datasheet Preview

PI3VST01 Datasheet

HPD signal Generator

No Preview Available !

PI3VST01
HPD signal Generator for VGA
Pinout Table
Pin # Pin Name I/O Type Description
1
GND Ground
Ground
2
VDD5
Power
5V ± 10% power rail
3 BIN I
Blue input from VGA source
4 VSYNC I
8 HPD_OUT O
7
VDD3
Power
6 BOUT O
5 Rref I/O
Vertical Synchronization signal, internal 250KOhm pulldown
Open drain output, telling the system the status of the external VGA monitor. If VGA
monitor is present, this pin will be pulled low. If VGA monitor is not present, this pin will
be Hi-z
3.3V ± 10% power rail
Blue output to VGA connector
Determines IC mode in terms of impedance detection levels. connect to external resistor
to GND. Resistor values can be determined by looking at truth table
All trademarks are property of their respective owners.
15-0090
2
www.pericom.com 07/08/15


Part Number PI3VST01
Description HPD signal Generator
Maker Pericom Semiconductor Corporation
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