參數(shù)資料
型號： MCIMX27MOP4A
廠商： Freescale Semiconductor
文件頁數(shù)： 46/152頁
文件大?。?/td> 0K
描述： IC MPU I.MX27 19X19 473MAPBGA
標準包裝： 84
系列： i.MX27
核心處理器： ARM9
芯體尺寸： 32-位
速度： 400MHz
連通性： 1 線，CAN，EBI/EMI，以太網，I²C，MMC，智能卡，SPI，SSI，UART/USART，USB OTG
外圍設備： DMA，LCD，POR，PWM，WDT
程序存儲器類型： ROMless
RAM 容量： 45K x 8
電壓 - 電源 (Vcc/Vdd)： 1.38 V ~ 1.52 V
振蕩器型： 外部
工作溫度： -40°C ~ 85°C
封裝/外殼： 473-LFBGA
包裝： 托盤
i.MX27 and i.MX27L Data Sheet, Rev. 1.8
14
Freescale Semiconductor
Functional Description and Application Information
Each module has individual control and configuration registers that are accessed via the IP interface, and
are capable of bus mastering the AMBA bus to independently access system memory without any CPU
intervention. This enables each module to be used independently of each other, and enables the
pre-processor and post-processor modules to provide acceleration features for other software codec
implementations and image processing software. These blocks work together to provide video
acceleration, and to off-load the CPU from computation intensive tasks. The PrP and PP can be used for
generic video pre- and post-processing, such as scaling, resizing, and color space conversions. A
32-bit-to-64-bit AHB gasket is used to convert a PrP AHB bus from a 32-bit to 64-bit protocol. A bypass
function is implemented to bypass this 64-bit gasket if it is not needed.
eMMA_lt supports the following image/video processing features:
Pre-processor:
— Data input:
– System memory
– Private DMA between CMOS Sensor Interface module and pre-processor
— Data input formats:
– Arbitrarily formatted RGB pixels (16 or 32 bits)
– YUV 4:2:2 (Pixel interleaved)
– YUV 4:2:0 (IYUV, YV12)
— Input image size: 32
× 32 to 2044 × 2044
— Image scaling:
– Programmable independent CH-1 and CH-2 resizer. Can program to be in cascade or
parallel.
– Each resizer supports downscaling ratios from 1:1 to 8:1 in fractional steps.
— Channel-1 output data format
– Channel 1
– RGB 16 and 32 bpp
– YUV 4:2:2 (YUYV, YVYU, UYVY, VYUY)
— Channel-2 output data format
– YUV 4:2:2 (YUYV)
– YUV 4:4:4
– YUV 4:2:0 (IYUV, YV12)
– RGB data and YUV data format can be generated concurrently
— 32/64-bit AHB bus
Post-processor
— Input data:
– From system memory
— Input format:
– YUV 4:2:0 (IYUV, YV12)
— Image Size: 32
× 32 to 2044 × 2044
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