 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
I.MX27 Datasheet(PDF) 51 Page - Freescale Semiconductor, Inc |
|
||||||||||||||||||||||||||||||
I.MX27 Datasheet(HTML) 51 Page - Freescale Semiconductor, Inc |
|
|
51 / 148 page  i.MX27 and i.MX27L Data Sheet, Rev. 1.5 Freescale Semiconductor 51 Electrical Characteristics 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) 4.2.5.2 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 22 lists the timing parameters. Table 21. 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 |
Similar Part No. - I.MX27 |
|
Similar Description - I.MX27 |
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.NET |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
