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2004 Jan 26 52
Philips Semiconductors Product specification
MPEG-2 video and MPEG-audio/AC-3
audio encoder with multiplexer
SAA6752HS
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Notes
1. In systems that use 16 Mbit SDRAM, due to system architecture constraints, LPCM bypass must be restricted to be used with I and IP video
encoding only. There is no constraint if 64 Mbit SDRAM is used.
2. All compressed audio data is 16-bit. In the event of LPCM bypass 20-bit data will be truncated to 16 bits.
94 I audio encoding
bit rate and output
resolution
R/W 1 byte 256 kbit/s
16-bit
defines the audio encoding bit rate (see
Section 7.5); note 2
bit 0 = 0 256 kbit/s
bit 0 = 1 384 kbit/s
bit 1 = 0 16-bit
bit 1 = 1 reserved
95 I audio clockoutput
frequency
R/W 1 byte 256 ×
48 kHz
selects the output frequency at the audio clock
mode
bit 0 = 0 256 × 48 kHz
bit 0 = 1 384 × 48 kHz
96 I audio
pre-emphasis
mode
R/W 1 byte off selects audio pre-emphasis mode of input
signal (valid for MPEG encoding only)
bit[1:0] = 00 off
bit[1:0] = 01 50/15 ms
bit[1:0] = 10 CCITT J17
ADR
HEX
M
COMMAND
NAME
R/W SIZE/POSITION PARAMETER/RANGE DEFAULT DESCRIPTION