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| Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw Dolby Digital Decoder IC PT8501 DESCRIPTION The PT8501 is a complete low-cost decoder for use in the decompression of higher-performance multi-channel digital audio, such as Dolby Digital (also called AC3). The PT8501 provides a complete and flexible solution for multi-channel audio decoding in laser-disc players, DVD movie players, stereo receivers, out-board decoders, HDTV sets, head-end decoders, set-top boxes, and similar products. PT8501 contains on-chip firmware for decoding and processing DOLBY DIGITAL (AC-3), linear PCM data. It also includes a Dolby Pro Logic decoder for decoding matrix surround encoded PCM data or 2-ch Dolby digital data. With a built-in S/PDIF receiver, no external S/PDIF receiver is necessary in order to receive digital bitstreams. The decoder is controlled via an I2C serial host interface. Standard digital audio data formats are supported, including I2S, MSB-first right-justified, and MSB-first left-justified. FEATURES Dolby(R) Digital (5.1-channel) decoder up to 448Kbps. Dolby(R) Surround Pro Logic decoder Built-in S/PDIF receiver and automatic bitstream detection Built-in large output buffers for both surround and center channels delay Pink Noise Generator built-in for easy set up of surround system I2C control interface 1 set of digital audio input port can be programmed to fit different format 3 sets of digital audio output port, can decode up to 6 channels Low operating voltage, 2.5V, with 3.3V IO tolerance Available in 100 pins, QFP and 80 pins LQFP APPLICATIONS Multimedia Speakers DVD Player AV Amplifier Set Top Box PT8501 V1.3 -1- March, 2006 Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw Dolby Digital Decoder IC PT8501 PIN ASSIGNMENT 100 PINS, QFP VDD_IO ACKQO GND_IO MCLKO GND_C GND_IO VDD_C VDD_IO NC NC ADQ2 NC ADQ1 GPIO2 GND_IO VDD_IO ADQ0 ALRQO GPIO1 GPIO0 NC NC VDD_IO VDD_C GND_IO GND_C GPIO12 NC GPIO11 NC GPIO10 BLRI VDD_IO VDD_C GND_IO GND_C EMCKI GND_IO VDD_IO BCKI BDI NC NC SPD_RX NC NC NC VDD_IO GND_IO NC 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 PT8501 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 PW_DWN NC TE GND_IO GND_C VDD_IO VDD_C PVDD PGND NC DSPRDY GND_IO GND_C CLKI VDD_IO VDD_C NC NC NC GND_IO VDD_IO NC FRAME_CNT NC NC NC NC NC GND_IO VDD_IO PT8501 V1.3 NC NC I2CC I2CD NC GPIO13 NC GPIO14 VDD_C VDD_IO VDD_C GND_C GND_C GND_IO NC GPIO15 NC NC NC /RST 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 -2- March, 2006 Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw Dolby Digital Decoder IC PT8501 APPLICATION CIRCUIT Oscillator 67 CLKI ACKQO 83 ALRQO 97 MCLKO ADQ0 99 IEC958 input Digital Interface Receiver 12 20 21 17 BLRI BCKI BDI EMCKI L DAC R LS 84 IEC958 input 24 50 SPD_RX /RST DolbyDigital Decoder ADQ1 88 DAC RS C I2CC I2CD DSPRDY PW_DWN ADQ2 90 DAC SUB Host P PT8501 V1.3 -3- March, 2006 Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw Dolby Digital Decoder IC PT8501 ORDER INFORMATION Valid Part Number PT8501 PT8501-80LQ Package Type 100 pins, QFP 80 pins, LQFP Top Code PT8501 PT8501-80LQ PT8501 V1.3 -4- March, 2006 |
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