PNX1502E Datasheet, PDF (421/819 Pages) NXP Semiconductors – Connected Media Processor

Chapter 12: Video Input Processor
PNX15xx Series Data Book – Volume 1 of 1
Rev. 2 — 1 December 2004
Product data sheet
1. Introduction
The Video Input Processor (VIP) handles incoming digital video and processes it for
use by other components of the PNX15xx Series. This enables applications such as
picture-in-picture and video teleconferencing on the TV screen.
1.1 Features
The VIP provides the following functions:
• Receives digital video data from the video port. The data stream may come from
a device such as the TDA8751, which can digitize analog video from any source
and convert a digital signal from a DVI interface/source into parallel YUV format
• Features 8/10-bit single channel (single-stream) and 16/20-bit dual channel
(dual-stream) capture of CCIR601 YUV 4:2:2 video input with embedded or
explicit syncs, supported by a maximum clock frequency of 81 MHz. The
DUAL_STREAM mode is used to capture a 16 or 20-bit HD stream where 8/10-
bit Y and 8/10-bit multiplexed U/V data are received and captured on two
separate channels.
• Provides video and auxiliary (AUX, ANC, or RAW) data acquisition and capture.
– Provides separate acquisition windows for video and for VBI data (cannot be
used if the output format is planar data.
– Implements two identical Dither units capable of either dithering or rounding
9- or 10-pixel components in video mode.
– Enables raw data capture in either 8 or 10 bits for single_stream mode and
8 bits of DUAL_STREAM mode.
– Enables ANC header decoding or window mode for VBI data extraction.
• Performs horizontal scaling, cropping and pixel packing on video data from a
continuous video data stream or a single field or frame.
– Performs horizontal down-scaling or zoom-up by 2x, the upscaling being
possible only in the single-stream mode.
– Enables linear horizontal aspect ratio conversion using normal or transposed
6-tap polyphase filter.
– Enables non-linear horizontal aspect ratio conversion using normal 6-tap
polyphase filter.