STB01010 IBM, STB01010 Datasheet - Page 25

• Manufacturer Part Number: STB01010
• Description: (STB01000 / STB01010) Digital Set-Top Box Integrated Controller
• Manufacturer: IBM

Ver 1.2, 06Apr99
4.3.2
• Provides two channel MPEG audio output; six channel Dolby Digital down mixed to two channels or six
• Decodes Dolby Digital 5.1 channels and supports Dolby Digital which is described in the ATSC
• Decodes MPEG-1 and MPEG-2 audio, Layers I and II and two channel output, two channel input
• Performs MPEG-1 audio parsing, MPEG-2 PES audio parsing and also accepts audio elementary
• Supports 16-kHz, 22.05-kHz, 24-kHz, 32-kHz, 44.1-kHz and 48-kHz audio sampling frequencies:
• Supports audio / video synchronization through PTS / STC comparison with each audio frame.
• Linear PCM (LPCM) playback at a sampling frequency of 48-kHz and quantization sample width
• Unpacketized PCM (UPCM) playback at sampling frequencies of 16-kHz, 22.05-kHz, 24-kHz, 32-kHz,
• Supports Karaoke Mode for Dolby Digital and PCM playback.
• Supports an encoded audio bit rate up to 640 Kbps. This bit rate only pertains to encoded bitstream
• Audio Clip Mode for PES, ES and PCM formats with byte address granularity and 2 MBytes maximum
• Expandable rate buffer size selectable from 4K to 64K (4K increments).
• Relocatable rate buffer region using a programmable base register with 128-byte location
• Relocatable PTS Value and Ancillary data region using a programmable base register with 128-byte
• Relocatable Audio Temporary Data and Decoded Audio Data Bank region using a programmable base
• Reduced memory requirement for 2 channel MPEG verses 5.1 channel Dolby Digital decoding
• 256x and 512x DAC sampling clock frequency configurations.
• Programmable stream ID register with corresponding 8-bit enable field.
• Provides two 20 bit PCM output formats:
Digital Audio / Video / Transport Subsystem
channels Dolby Digital output.
Specification for Digital Audio Compression (AC-3).
including:
– Single channel, stereo, joint stereo, and dual channel modes.
streams.
– 16-kHz, 22.05-kHz, and 24-kHz frequencies are derived within the Audio Decoder, from 32-kHz,
selections of 16, 18 or 20 bit input and 20 bit output.
44.1-kHz and 48-kHz along with quantization sample width selections of 16-, 18- or 20-bit input and 20-
bit output.
data.
per clip.
granularity.
location granularity.
register with 128-byte location granularity with additional offset register.
– I
44.1-kHz and 48-kHz sampling frequencies, respectively.
2
S;
Features
Dolby Laboratories Licensing Corporation
Attn: Intellectual Property Manager
San Francisco, CA 94103-4813
Dolby Laboratories Inc.
100 Potrero Avenue
Digital Set-Top Box Integrated Controller
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