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PNX8526 Datasheet(PDF) 1 Page - NXP Semiconductors |
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PNX8526 Datasheet(HTML) 1 Page - NXP Semiconductors |
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1 / 59 page  PNX8526 Programmable source decoder with integrated peripherals Rev. 01 – 6 October 2003 Preliminary data 1. General description The PNX8526 is a highly integrated media processor for use in Advanced Set Top Boxes (ASTB) and Digital Television (DTV) systems. The PNX8526 is targeted at the mid to high-end ASTB/DTV systems, decoding “all format” HD and SD MPEG2 source material with Standard Definition (SD), or double line-rate SD display capabilities. Although the PNX8526 can process high level input formats, its display capabilities are primarily targeted at NTSC, PAL and SECAM televisions. It is also intended for lower cost DTVs, those not considered high definition. Progressive output is also available for double line-rate television displays, or for high resolution graphic content to be displayed on a computer monitor. The PNX8526 is designed in a high performance 0.12-micron process. The PNX8526 performs source decode functions, including - conditional access, MPEG2 transport stream de-mux, MPEG2 video decode, audio decode and processing, graphics generation, video processing, and image composition and display. A 32-bit 200 MHz VLIW processor, referred to as the TriMedia™ 3200 CPU core (TM32 CPU), carries out the majority of media processing operations performed by the PNX8526. Fixed function hardware will perform some operations that are not handled by the TM32 CPU. Additionally, the PNX8526 supports a number of peripheral interfaces such as I2C, USB, IDE and UART. Other interfaces such as IEEE-1284 and Ethernet may be supported via Super I/O devices that reside on a PCI expansion bus. The expansion bus also provides for glueless interface to 8-bit wide slave devices, such as Flash/ROM, DOCSIS modem, UARTs, etc. An embedded MIPS processor (PR3940) running at 150 MHz is intended to run the OS. (There is no direct support for an external processor; however, a CPU of any type may be connected to the PNX8526 via the PCI interface.) This implies a complete CPU subsystem consisting of the CPU itself, local memory, and an interface to PCI. The MIPS processor is primarily responsible for control functions and graphics-intensive operating systems, while the TM32 CPU is responsible for running all real-time media processing functions. All resources supported within the PNX8526 are accessible by both the MIPS processor and the TM32 CPU. The software documentation of the PNX8526 provides more details on the interaction between the MIPS and the TM32 CPU. The PNX8526 is intended to be used with a small companion IC, the PNX8510. This analog companion chip provides the majority of analog video and audio support for the output of the PNX8526. The PNX8510 companion is capable of simultaneously driving two video channels (6 DACs) and two stereo audio channels (4 DACs). |
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