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W995Z0251, W9961CF, W9968

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Info of W995Z0251
Info of W9961CF
Info of W9968

W995Z0251, W9961CF, W9968 Selling Leads, Datasheet

MFG:ST Package Cooled:DIP-16 D/C:PCS/

W995Z0251, W9961CF, W9968 Datasheet download

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Part Number: W995Z0251

MFG: ST

Package Cooled: DIP-16

D/C: PCS/

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W9961CF General Description

The W9961CF is a highly integrated single chip video codec provided by Winbond Electronics Corp.

The W9961CF performs video compression and decompression fully compliant with ITU-T H.263 and H.261 standards for video conferencing. Working in conjunction with the high performance 32-bit RISC, W90220CF, the W9961CF is aimed to provide a complete video solution that supports both the H.324 international standard for video conferencing over regular telephone lines (Public Switched Telephone Network, or PSTN) as well as the H.320 international standard for ISDN video conferencing. Moreover, the W9961CF integrates a high quality NTSC/PAL TV encoder to directly interface to TV or LCD, eliminating the need for a separate TV encoder for stand-alone or set-top videophone.

To achieve high performance video coding and decoding, many hardware engines are integrated in the W9961CF, which perform Motion Estimation and Motion Compensation, Discrete Cosine Transform (DCT) and Inverse Discrete Cosine Transform (IDCT), Quatization and Inverse Quantization, Zig-zag Scan, Variable Length Encoding and Variable Length Decoding (VLD), etc. A high performance 16-bit RISC with 5Kx22 bits program memory (PM) and 1Kx16 bits data memory (DM) is also integrated for H.263/H.261 coding/decoding control and intelligent frame rate control.

There are three picture formats supported by the W9961 encoder and decoder: sub-QCIF, QCIF, and CIF. The W9961CF, when operated at 70 Mhz clock frequency, is capable to encode/decode sub- QCIF, QCIF, or CIF at 30 fps.
The W9961CF can accept NTSC or PAL video, square, or rectangular pixels, and convert to sub- QCIF, QCIF, or CIF format. A two-dimensional noise reduction filter is integrated to reduce noise and improve coding efficiency. Built-in cropping window control and arbitrary scaling in both the horizontal and vertical directions can serve as the digital pan and zoom over a user-specified region for camera control.

In the video post-processing, the W9961CF supports two movable and arbitrarily scaleable windows with picture-in-picture (PIP) feature for remote and local view video. A built-in post deblocking filter is used to reduce visible artifacts of remote view from video compression. The local view video can be mirrored or unmirrored. A display controller is built-in with 4-/8-/16-bit color modes for background or on-screen-display (OSD). A high quality NTSC/PAL TV encoder is also integrated to directly interface to TV or LCD.

An on-chip DRAM controller is used to interface to SDRAM or EDO DRAM through 32-bit data bus. The W9961CF is a 3.3 V device with TTL-compatible 3.3 V or 5.0 V I/O, and is packaged in 208-pin PQFP.

W9961CF Maximum Ratings

Ambient temperature	0° C to 70° C
Storage temperature	-40° C to 125° C
DC supply voltage	-0.5V to 7V
I/O pin voltage with respect to VSS	-0.5V to VDD + 0.5V

W9961CF Features

Video Codec
• Fully compliant with ITU-T international standards H.263 and H.261
• Encodes/decodes in sub-QCIF (128x96), QCIF (176x144), or CIF (352x288) picture format
• Encodes/decodes sub-QCIF/QCIF/CIF at 30 frames per second (fps)
• Supports both integer search and half-pixel search motion estimation
• Supports several H.263 Version 2 preferred modes including
Annex D Unrestricted Motion Vectors (With UUI = 1)
Annex J Deblocking Filter
Annex K Slice Structured Mode
Annex L Supplemental Enhancement Information (Full-Frame Freeze Only)
Annex T Modified Quantization
Video Pre-processing
• Direct connect to digital camera through 8- or 16-bit data bus
• Glueless interface to NTSC/PAL TV decoder
• Input video format compliant with YCbCr 4:2:2 CCIR 601 standard
• Built-in two-dimensional noise reduction filter to reduce noise and improve coding efficiency
• Built-in cropping and arbitrary scaling for digital pan and zoom camera control
Video Post-processing
• Built-in two moveable and arbitrarily scalable video windows with picture-in-picture (PIP)
• Built-in post deblocking filter to reduce visible artifacts of remote view from video compression
• The local view can be mirrored or unmirrored
• Built-in display controller with 4-/8-/16-bit color modes for background or on-screen-display (OSD)
• Built-in NTSC/PAL TV encoder with three 9-bit DACs for direct TV output
• Built-in 3-line 1D/2D flicker-free filter for best text quality
• Supports three composite video, one S-Video and one composite video, or one RGB output
• Hue, saturation, contrast, and brightness adjustments
ISA-like Interface and GPIOs
• Direct connect to DSPG CT802X-series audio processor through 8-bit ISA-like interface
• Provides several general purpose I/O ports which can be configured as serial ports, keypad
control, button control, remote control, etc.
Host Interface
• Direct connect to Winbond W902X0-series CPU through 32-bit PCI bus
• PCI 2.1 compliant
Memory Interface
• Supports SDRAM or 1-cycle EDO DRAM at 70 Mhz maximum clock frequency
• Supports 32-bit DRAM interface in 1, 2 or 4 Mbytes configuration
Built-in Programmable Phase-Locked Loop (PLL) Clock Synthesizer
Operating Frequency is 70 Mhz with Video Input Frequency of 13.5 MHz (typical), Video
Output Frequency of 27.0 Mhz, and PCI Clock Frequency of 33 MHz
3.3 V Device with TTL-compatible 3.3 V or 5.0 V I/O
Fabricated in Advanced 0.35um TLM Technology
208L QFP Package

W9961CF Connection Diagram

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