參數(shù)資料
型號(hào)： MCIMX27VOP4
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： 32-BIT, 400 MHz, MICROPROCESSOR, PBGA404
封裝： 17 X 17 MM, 0.65 MM PITCH, LEAD FEE, MAPBGA-404
文件頁數(shù)： 67/118頁
文件大?。?/td> 1159K
代理商： MCIMX27VOP4
i.MX27 Data Sheet, Advance Information, Rev. 0.1
52
Preliminary—Subject to Change Without Notice
Freescale Semiconductor
Signal Descriptions
HCLK = AHB System Clock, THCLK = Period for HCLK, Tp = Period of CSI_PIXCLK
The limitation on pixel clock rise time/fall time is not specified. It should be calculated from the hold
time and setup time based on the following assumptions:
Rising-edge latch data:
max rise time allowed = (positive duty cycle—hold time)
max fall time allowed = (negative duty cycle—setup time)
In most of case, duty cycle is 50/50, therefore:
max rise time = (period/2—hold time)
max fall time = (period/2—setup time)
For example: Given pixel clock period = 10 ns, duty cycle = 50/50, hold time = 1 ns, setup time = 1 ns.
positive duty cycle = 10/2 = 5 ns
max rise time allowed = 5 –1 = 4 ns
negative duty cycle = 10/2 = 5 ns
max fall time allowed = 5 –1 = 4 ns
Falling-edge latch data:
max fall time allowed = (negative duty cycle—hold time)
max rise time allowed = (positive duty cycle—setup time)
3.5.5.2
Non-Gated Clock Mode Timing
In non-gated mode only, the VSYNC, and PIXCLK signals are used; the HSYNC signal is ignored. Figure
3 and Figure 4 show the different clock edge timing of CSI and Sensor in Non-Gated Mode. Table 3 is the
parameter value. Figure 11 and Figure 12 show the non-gated clock mode timings of CSI, and Table 21
lists the timing parameters.
Figure 11 shows sensor output data on the pixel clock falling edge. The CSI latches data on the pixel clock
rising edge.
Table 20. Gated Clock Mode Timing Parameters
Number
Parameter
Minimum
Maximum
Unit
1
csi_vsync to csi_hsync
9*THCLK
—ns
2
csi_hsync to csi_pixclk
3
(Tp/2)-3
ns
3
csi_d setup time
1
—
ns
4
csi_d hold time
1
—
ns
5
csi_pixclk high time
THCLK
—ns
6
csi_pixclk low time
THCLK
—ns
7
csi_pixclk frequency
0
HCLK/2
MHz
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參數(shù)描述
MCIMX27VOP4A 功能描述:處理器 - 專門應(yīng)用 I.MX27 REV 2.1 RoHS:否 制造商:Freescale Semiconductor 類型:Multimedia Applications 核心:ARM Cortex A9 處理器系列:i.MX6 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:1 GHz 指令/數(shù)據(jù)緩存: 數(shù)據(jù) RAM 大小:128 KB 數(shù)據(jù) ROM 大小: 工作電源電壓: 最大工作溫度:+ 95 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MAPBGA-432
MCIMX27VOP4AR2 功能描述:處理器 - 專門應(yīng)用 I.MX27 REV 2.1 RoHS:否 制造商:Freescale Semiconductor 類型:Multimedia Applications 核心:ARM Cortex A9 處理器系列:i.MX6 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:1 GHz 指令/數(shù)據(jù)緩存: 數(shù)據(jù) RAM 大小:128 KB 數(shù)據(jù) ROM 大小: 工作電源電壓: 最大工作溫度:+ 95 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MAPBGA-432
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MCIMX280CVM4B 功能描述:處理器 - 專門應(yīng)用 Catskills Rev1.2 RoHS:否 制造商:Freescale Semiconductor 類型:Multimedia Applications 核心:ARM Cortex A9 處理器系列:i.MX6 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:1 GHz 指令/數(shù)據(jù)緩存: 數(shù)據(jù) RAM 大小:128 KB 數(shù)據(jù) ROM 大小: 工作電源電壓: 最大工作溫度:+ 95 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MAPBGA-432
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