PI3VST01
PI3VST01 is HPD signal Generator manufactured by Pericom Semiconductor.
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 +/-4k V contact per
IEC61000-4-2 specification ÎÎ-3d B BW of 1.7GHz (typ) ÎÎ4.75 Ohm On Resistance with 0.5 Ohm flatness (typ) ÎÎLow input/output capacitance (Con = 4.5p F, 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 system that a monitor is connected. More recent video standards, such as HDMI and Display Port, save power by adding a hot-plug pin which allows graphics outputs to be powered down when a monitor is not connected. Peri’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 m W per DAC. PI3VST01 dissipates only 0.66 m W. The monitor detection scheme within the PI3VST01 will not affect normal operation of the video driver.
Block Diagram
VSYNC
Logic Control
Pin Configuration-U8 (Top View)
BOUT
Detector
HPD_OUT
GND VDD5 BIN VSYNC
87 6 5 1234
HPD_OUT VDD3 BOUT Rref
RREF
All trademarks are property of their respective owners.
15-0090
.peri.07/08/15
HPD signal Generator for VGA
Pinout Table
Pin # Pin Name I/O Type Description
GND Ground
Ground
VDD5
Power
5V ± 10% power rail
3 BIN I
Blue input from VGA source
4 VSYNC I
8 HPD_OUT...