參數(shù)資料
型號: MCIMX27
廠商: 飛思卡爾半導(dǎo)體(中國)有限公司
英文描述: Multimedia Applications Processor(多媒體應(yīng)用處理器)
中文描述: 多媒體應(yīng)用處理器(多媒體應(yīng)用處理器)
文件頁數(shù): 77/118頁
文件大?。?/td> 1159K
代理商: MCIMX27
Signal Descriptions
i.MX27 Data Sheet, Advance Information, Rev. 0.1
Freescale Semiconductor
Preliminary—Subject to Change Without Notice
77
Figure 40. Mobile DDR SDRAM Write Cycle Timing Diagram
NOTE
SDRAM CLK and DQS related parameters are being measured from the
50% point—that is, high is defined as 50% of signal value and low is
defined as 50% of signal value.
The timing parameters are similar to the ones used in SDRAM data
sheets—that is,
Table 40
indicates SDRAM requirements. All output signals
are driven by the ESDCTL at the negative edge of SDCLK and the
parameters are measured at maximum memory frequency.
Table 40. Mobile DDR SDRAM Write Cycle Timing Parameters
1
1
Test condition: Measured using delay line 5 programmed as follows: ESDCDLY5[15:0] = 0x0703.
ID
Parameter
Symbol
Min
Max
Unit
SD17
DQ and DQM setup time to DQS
tDS
0.95
ns
SD18
DQ and DQM hold time to DQS
tDH
0.95
ns
SD19
Write cycle DQS falling edge to SDCLK output delay time.
tDSS
1.8
ns
SD20
Write cycle DQS falling edge to SDCLK output hold time.
tDSH
1.8
ns
SDCLK
SDCLK
DQS (output)
DQ (output)
DQM (output)
Data
Data
Data
Data
Data
Data
Data
Data
DM
DM
DM
DM
DM
DM
DM
DM
SD17
SD17
SD17
SD17
SD18
SD18
SD18
SD18
SD19
SD20
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相關(guān)代理商/技術(shù)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(chǎn)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(chǎn)品:Evaluation Boards 類型:YPbPr to RGBHV Converters 工具用于評估:LMH1251 工作電源電壓:5 V