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參數資料
| 型號： | PNX8526EH |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費家電 |
| 英文描述： | Programmable source decoder with integrated peripherals |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PBGA456 |
| 封裝： | 35 X 35 MM, 1.8 MM HEIGHT, PLASTIC, MS-034, SOT610-1, HBGA-456 |
| 文件頁數： | 1/59頁 |
| 文件大小： | 3319K |
| 代理商： | PNX8526EH |
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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 I
2
C, 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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