PDF SAA6752HS Data sheet ( Hoja de datos )

Número de pieza	SAA6752HS
Descripción	MPEG-2 video and MPEG-audio/AC-3 audio encoder with multiplexer
Fabricantes	NXP Semiconductors
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No Preview Available ! INTEGRATED CIRCUITS DATA SHEET SAA6752HS MPEG-2 video and MPEG-audio/AC-3 audio encoder with multiplexer Product speciﬁcation Supersedes data of 2002 Dec 09 2004 Jan 26 1 page Philips Semiconductors MPEG-2 video and MPEG-audio/AC-3 audio encoder with multiplexer Product speciﬁcation SAA6752HS 2.2 Application ﬁelds 2.2.1 DVD BASED OPTICAL DISC RECORDERS (DVD+RW, DVD-RW, DVD-RAM) Emerging optical disc based recording systems target to replace the existing consumer recording (VCR) and playback (DVD and VCD) products. The first generation recordable DVD based products will want to maximise recording times for the 4.7 Gbyte storage capacity. For these systems the SAA6752HS is critical, with its superior noise filtering and motion estimation, in enabling high quality at low bit rates. Playback compatibility with existing DVD decoding solutions will also be important, which is why the SAA6752HS provides Dolby® digital consumer (AC-3) audio encoding to allow playback through existing players implementing DDCE (AC-3) decoding dominant in current DVD platforms. The DVD stream is based on MPEG Program Stream (PS). The SAA6752HS directly outputs MPEG PS compliant to the DVD standard. 2.2.3 DIGITAL VCR (DVHS) RECORDING A DVHS player records streams based on MPEG Transport Streams (TS) packed in logical tape tracks. The SAA6752HS output streams are compliant with DVHS standard requirements. 2.2.4 VIDEO EDITING/TRANSMISSION/SURVEILLANCE/ CONFERENCING The SAA6752HS can operate as a stand-alone device in all the above applications. The SAA6752HS full features and flexibility allows customers to tailor functionality and performance to specific application requirements. All required control settings such as GOP size and bit rate modes can be selected via the I2C-bus. 2.2.2 HDD BASED TIME SHIFT RECORDING Hard Disc Drive (HDD) based time-shift systems enable Personalized TV (PTV) functionality, providing consumers with new powers of control over what and when to watch broadcast content. With the audio and video content recorded digitally, identification, search and retrieval becomes a ‘no brainer’ task as compared to traditional VCR functionality. Combine this with electronic program guides and intelligent control, and the PTV can also analyse the viewers watching habits to search for programs likely to be of interest and automatically recorded in anticipation of the viewers preferences. Since HDD recorders are closed systems, the recording format stream can be proprietary. The SAA6752HS flexible multiplexing formats support a number of recording stream formats for HDD including MPEG Transport Stream (TS) or MPEG Packetized Elementary Stream (PES). 2004 Jan 26 5 5 Page Philips Semiconductors MPEG-2 video and MPEG-audio/AC-3 audio encoder with multiplexer Product speciﬁcation SAA6752HS SYMBOL SD_DQ21 SD_DQ25 VDDP SD_DQ22 SD_DQ24 SD_DQ23 EXTCLK VSSP VSSA XTALI XTALO VDDA VSSCO VSSCO VDDCO VDDCO VDDP TDI TMS TCK TDO VSSP TRST CLKOUT TEST0 TEST1 VDDP TEST2 SDA SCL RESET VSSP RTS 2004 Jan 26 PIN INPUT/OUTPUT(1) 117 input/output 118 input/output 119 supply 120 input/output 121 input/output 122 input/output 123 input 124 ground 125 ground 126 analog input 127 analog output 128 supply 129 ground 130 ground 131 supply 132 supply 133 supply 134 input 135 input 136 input 137 3-state output 138 ground 139 input 140 output 141 input/output 142 input/output 143 supply 144 input/output 145 input/open-drain output 146 input/open-drain output 147 input 148 ground 149 output Imax (mA) DESCRIPTION 8 reserved (do not connect) 8 reserved (do not connect) − pad ring supply voltage (3.3 V) 8 reserved (do not connect) 8 reserved (do not connect) 8 reserved (do not connect) − 27 MHz external clock input with internal pull-up resistor − pad ground − oscillator analog ground − crystal oscillator input (27 MHz); note 2 − crystal oscillator output (27 MHz) − oscillator analog supply voltage (2.5 V) − core ground − core ground − core supply voltage (2.5 V) − core supply voltage (2.5 V) − pad ring supply voltage (3.3 V) − boundary scan test data input; pin must ﬂoat or set to HIGH during normal operating; with internal pull-up resistor; note 3 − boundary scan test mode select; pin must ﬂoat or set to HIGH during normal operating; with internal pull-up resistor; note 3 − boundary scan test clock; pin must be set to LOW during normal operating; with internal pull-up resistor; note 3 4 boundary scan test data output; pin not active during normal operating; with 3-state output; note 3 − pad ground − test reset input (active LOW), for boundary scan test (with internal pull-up resistor); notes 3 and 4 4 27 MHz system clock output 4 reserved (do not connect) 4 reserved (do not connect) − pad ring supply voltage (3.3 V) 4 reserved (do not connect) − I2C-bus serial data input/output − I2C-bus serial clock input/output − reset input (active LOW); with internal pull-up resistor − pad ground 4 reserved (do not connect); Universal Asynchronous Receiver/Transmitter (UART) request to send output (active LOW) 11 11 Page

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