ptn3392 NXP Semiconductors, ptn3392 Datasheet - Page 11

• Manufacturer Part Number: ptn3392
• Description: 2-lane Displayport To Vga Adapter Ic
• Manufacturer: NXP Semiconductors

NXP Semiconductors
PTN3392
Product data sheet
NK_COUNT = 1
Fig 3.
yes
no
generate IRQ_HPD pulse
Pin S0 behavior
S0 = LOW
detected?
changed?
Power-up
HPD = 0;
detected
HPD = 1
initialize
monitor
monitor
yes
The PTN3392 implements two different ways to handle the HPD signal. The HPD
behavior is governed by the S0 pin’s value after the reset and initialization sequence is
completed (see
•
•
SINK_COUNT = 0
If S0 is tied LOW, HPD is driven HIGH irrespective of whether a VGA monitor is
detected.
If S0 pin is tied HIGH, HPD is only driven HIGH when a monitor is detected.
no
All information provided in this document is subject to legal disclaimers.
Figure
3).
Rev. 2 — 15 July 2010
SINK_COUNT = 1
HPD = 1
yes
no
S0 = HIGH
detected?
changed?
Power-up
HPD = 0;
detected
initialize
monitor
monitor
2-lane DisplayPort to VGA adapter IC
SINK_COUNT = 0
yes
no
HPD = 0
002aaf365
PTN3392
© NXP B.V. 2010. All rights reserved.
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