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參數(shù)資料
| 型號： | MCIMX27 |
| 廠商： | 飛思卡爾半導體(中國)有限公司 |
| 英文描述： | Multimedia Applications Processor(多媒體應用處理器) |
| 中文描述： | 多媒體應用處理器（多媒體應用處理器） |
| 文件頁數(shù)： | 26/118頁 |
| 文件大?。?/td> | 1159K |
| 代理商： | MCIMX27 |
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i.MX27 Data Sheet, Advance Information, Rev. 0.1
26
Preliminary—Subject to Change Without Notice
Freescale Semiconductor
Functional Description and Application Information
2.3.37
Watchdog Timer Module (WDOG)
The Watchdog Timer module (WDOG) protects against system failures by providing a method of escaping
from unexpected events or programming errors. Once the WDOG module is activated, it must be serviced
by software on a periodic basis. If servicing does not take place, the timer times out. Upon a time-out, the
WDOG Timer module either asserts the wdog signal or a system reset signal wdog_rst, depending on
software configuration. The WDOG Timer module also generates a system reset via a software write to
the Watchdog Control Register (WCR) when there is a detection of a clock monitor event, an external
reset, an external JTAG reset signal, or if a power-on-reset has occurred.
2.3.38
Wireless External Interface Module (WEIM)
The Wireless External Interface Module (WEIM) handles the interface to devices external to the chip,
including generation of chip selects, clocks and controls for external peripherals and memory. It provides
asynchronous and synchronous access to devices with an SRAM-like interface.
The WEIM includes six chip selects for external devices, with two CS signals covering a range of
128 Mbytes, and the other four each covering a range of 32 Mbytes. The 128-Mbyte range can be
increased to 256 Mbytes when combined with the two signals. The WEIM offers selectable protection for
each chip select as well as programmable data port size. There is a programmable wait-state generator for
each chip select and support for Big Endian and Little Endian modes of operation per access.
2.3.39
Video Codec
The Video Codec module is the video processing module in the i.MX27 processor. It supports full duplex
video codec with 25 fps VGA resolution, supports multi-party calls, and integrates multiple video
processing standards, including H.264 BP, MPEG-4 SP, and H.263 P3 (including annex I, J, K, and T), D1
resolution, 30 fps—half-duplex.
It has three 64-bit AHB-Lite master bus interfaces connecting to the EMI, which includes two read
channels and one write channel. Its 32-bit AHB-Lite master bus is connected to ARM Platform to access
system-internal SRAM.
The Video Codec module contains three major architectural components: video codec processing IP,
AXI-to-AHB bus protocol transfer module, and a 32-bit to 64-bit AHB master bus protocol transfer
module.
The Video Codec module supports following video stream processing features:
Multi-standard video codec
— MPEG-4 part-II simple profile encoding/decoding
— H.264/AVC baseline profile encoding/decoding
— H.263 P3 encoding/decoding
— Multi-party call: max processing four image/bitstream encoding and/or decoding
simultaneously
— Multi-format: for example, encodes MPEG-4 bitstream, and decodes H.264 bitstream
simultaneously
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| MCIMX31_07 | Multimedia Applications Processors |
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| MCL245 | SILICON EPITAXIAL PLANAR DIODE |
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MCIMX27_08 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Multimedia Applications Processor |
| MCIMX27ADSE | 功能描述:開發(fā)板和工具包 - ARM I.MX27 ADS RoHS:否 制造商:Arduino 產品:Development Boards 工具用于評估:ATSAM3X8EA-AU 核心:ARM Cortex M3 接口類型:DAC, ICSP, JTAG, UART, USB 工作電源電壓:3.3 V |
| MCIMX27ADSE | 制造商:Freescale Semiconductor 功能描述:Development Kit |
| MCIMX27EC | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Multimedia Applications Processor |
| MCIMX27IPCAM | 功能描述:視頻 IC 開發(fā)工具 I.MX27 IP CAMERA REF RoHS:否 制造商:Texas Instruments 產品:Evaluation Boards 類型:YPbPr to RGBHV Converters 工具用于評估:LMH1251 工作電源電壓:5 V |
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