935274109557 NXP Semiconductors, 935274109557 Datasheet - Page 26

• Manufacturer Part Number: 935274109557
• Manufacturer: NXP Semiconductors

Specifications of 935274109557

• Screening Level: Commercial
• Package Type: SQFP
• Pin Count: 208
• Lead Free Status / RoHS Status: Compliant

Philips Semiconductors
7.5
7.5.1
The digital audio signal from the I
compressed according to MPEG-1 layer 2 and DDC
(AC-3) encoding (only for SAA6752HS/V103). The
constant bit rate is programmable via the I
An audio stream with 16 to 20 bits and a sampling
frequency of 48 kHz can be processed. A higher accuracy
of more than 20 bits is ignored. A bypass mode can be
selected for LPCM for 16-bit data resolution and
compressed audio signals (MPEG-1 layer 2, MPEG-2, DD
and DTS) according to IEC 61397 or LPCM. The format of
such compressed inputs is identified and made accessible
via the I
7.5.2
The following configuration options can be selected from
the host:
7.5.3
The following configuration options can be selected from
the host:
Table 5 DVD-compliant audio bypass
7.6
7.6.1
The external SDRAM is used as memory for storing video
and audio information during the compression process.
It is also used as a buffer for the output stream. The
interfacing to and from the functional blocks is done via a
number of internal FIFO memories.
2004 Jan 26
MPEG-1/2 layer 2 without
extension
MPEG-2 layer 2 with
extension
Dolby
DTS-1
AUDIO PROCESSING MODES. MPEG-1 L2 or DDC
(AC-3) encoding (only for SAA6752HS/V103) modes
can be selected. Two bypass modes are also available:
LPCM bypass and DVD-compliant bitstream bypass.
AUDIO MUTE. It is possible to mute the audio data prior
to encoding.
MPEG-2 video and MPEG-audio/AC-3
audio encoder with multiplexer
Audio compression
SDRAM interface
2
C-bus.
G
A
A
digital
G
UDIO ENCODER CONFIGURATION OPTIONS
UDIO ENCODER STATUS INFORMATION
ENERAL
ENERAL
MODE
64 to 384 kbit/s
up to 912 kbit/s
64 to 448 kbit/s
192 to 1536 kbit/s
2
S input port is
BIT RATE
2
C-bus.
SAMPLE FREQUENCY
48 kHz only
48 kHz only
48 kHz only
48 kHz only
26
7.5.4
MPEG-1 layer 2 encoding can be selected. The available
I
7.5.5
Dolby
selected. The encoder performance is suitable for
consumer electronic recordable DVD systems.
7.5.6
16-bit LPCM audio streams can be bypassed by the audio
encoder module.
7.5.7
DVD-compliant bypass and pause burst handling is
selectable in accordance to IEC 61937. Preamble Pc,
Preamble Pd and part of the elementary stream header
are captured and made available via the I
non DVD-compliant formats are detected then these are
flagged via host interrupt.
The SAA6752HS will support 16 Mbit@16 bit
(512k
SDRAM devices. The minimum recommended speed of
the SDRAM is 125 MHz. Recommended SDRAMs include
the Samsung K4S641632D-TC/L80 and
K4S161622D-TC/L80 devices.
2
C-bus settings are:
DVD-BYPASS HEADER INFORMATION. Header
information is available to allow the host to determine
the content of the bypassed audio data stream. This
includes information from the Preamble Pc, Preamble
Pd and audio frame headers.
No pre-emphasis (default setting)
50/15 s (compliant to ISO 11172-3)
CCITT J.17 (compliant to ISO 11172-3).
16
Digital Consumer (DDC) encoding mode can be
MPEG-1
DDC
LPCM
DVD-
2) and 64 Mbit@16 bit (1024k
COMPLIANT AUDIO BYPASS
ENCODING
BYPASS
mono, stereo or multi-channel up to 7.1
mono, stereo or multi-channel up to 7.1
1/0, 2/0, 3/0, 2/1, 3/1, 2/2 and 3/2
stereo or multi-channel up to 5.1
LAYER
CHANNEL CONFIGURATION
2
(
ONLY FOR
ENCODING
SAA6752HS/V103)
SAA6752HS
Product specification
2
C-bus. If any
16
4)