8 7 6 5 1 2 3 4 V V V PI3VST01 HPD signal Generator for VGA Description Features e VTh GA connector does not have a hot-plug pin to tell the sys- Hot Plug Detect Signal Generator for VGA connectors tem that a monitor is connected. More recent video standards, Generates hot plug output signal telling system when such as HDMI and DisplayPort, save power by adding a hot-plug monitor is present or not pin which allows graphics outputs to be powered down when a Power Supply, 3.3V and 5.0V monitor is not connected. ESD tolerance on pin 7 is up to +/-4kV contact per Pericoms PI3VST01 HPD signal generator generates a monitor IEC61000-4-2 specicfi ation detection signal from a VGA source connector to tell the VGA -3dB BW of 1.7GHz (typ) source if an external monitor is connected or not. 4.75 Ohm On Resistance with 0.5 Ohm flatness (typ) PI3VST01 allows notebook makers to shut off the VGA DAC Low input/output capacitance (Con = 4.5pF, typ) when a monitor is not connected, thus saving 170 mW per DAC. PI3VST01 dissipates only 0.66 mW. Packaging (Pb-free and Green): 8-contact MSOP (U) e mTh onitor detection scheme within the PI3VST01 will not affect normal operation of the video driver. Pin Configuration-U8 (Top View) Block Diagram HPD OUT GND V V DD3 DD5 BOUT BIN BOUT BIN Rref VSYNC Logic HPD OUT VSYNC Detector Control RREF All trademarks are property of their respective owners. www.pericom.com 07/08/15 15-0090 1PI3VST01 HPD signal Generator for VGA Pinout Table Pin Pin Name I/O Type Description 1 GND Ground Ground 2 Power 5V 10% power rail V DD5 3 BIN I Blue input from VGA source 4 VSYNC I Vertical Synchronization signal, internal 250KOhm pulldown Open drain output, telling the system the status of the external VGA monitor. If VGA 8 HPD OUT O monitor is present, this pin will be pulled low. If VGA monitor is not present, this pin will be Hi-z 7 Power 3.3V 10% power rail V DD3 6 BOUT O Blue output to VGA connector Determines IC mode in terms of impedance detection levels. connect to external resistor 5 Rref I/O to GND. Resistor values can be determined by looking at truth table All trademarks are property of their respective owners. www.pericom.com 07/08/15 15-0090 2