參數(shù)資料
型號： MCIMX27MOP4A
廠商： Freescale Semiconductor
文件頁數(shù)： 72/152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(wǎng)，I²C，MMC，智能卡，SPI，SSI，UART/USART，USB OTG
外圍設(shè)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
26
Freescale Semiconductor
Signal Descriptions
– Support 16 reference frame for H.264 decoding
– Quarter-pel and half-pel accuracy motion estimation
– [+/-16, +/-16] Search range
– Unrestricted motion vector
— All variable block sizes are supported (in case of encoding, 8
× 4, 4 × 8, and 4 × 4 block sizes
are not supported).
— MPEG-4 AC/DC prediction and H.264 Intra prediction
— H.263 Annex I, J, K(RS = 0 and ASO =0), and T are supported. In case of encoding, the Annex
I and K(RS=1 or ASO=1) are not supported.
— CIR (Cyclic Intra Refresh)/AIR (Adaptive Intra Refresh)
— Error resilience tools
– MPEG-4 re-synchronize marker and data-partitioning with RVLC (fixed number of
bits/macroblocks between macroblocks)
– H.264/AVC FMO and ASO
– H.263 slice structured mode
— Bit-rate control (CBR and VBR)
Pre/post rotation/mirroring
— 8 rotation/mirroring modes for image to be encoded
— 8 rotation/mirroring modes for image to be displayed
Programmability
— Embeds 16-bit DSP processor that is dedicated to processing bitstream and driving codec
hardware
— General purpose registers and interrupt generation for communication between system and
video codec module
3
Signal Descriptions
This section discusses the following:
Identifies and defines all device signals in text, tables, and (as appropriate) figures. Signals can be
organized by group, as applicable.
Contains pin-assignment/contact-connection diagrams, if the sequence of information in the data
sheet requires them to be included here.
Table 3 shows the i.MX27/MX27L signal descriptions.
Table 3. i.MX27/MX27L Signal Descriptions
Pad Name
Function/Notes
External Bus/Chip Select (EMI)
A [13:0]
Address bus signals, shared with SDRAM/MDDR, WEIM and PCMCIA, A[10] for
SDRAM/MDDR is not the address but the pre-charge bank select signal.
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