LMH1982SQEEVAL National Semiconductor, LMH1982SQEEVAL Datasheet
LMH1982SQEEVAL
Specifications of LMH1982SQEEVAL
Related parts for LMH1982SQEEVAL
LMH1982SQEEVAL Summary of contents
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... LMH1982 SD/HD Video Clock and Timing Generator with Genlock Capability National Semiconductor Corp. Software Application Version 2.0 Evaluation Software User Guide Rev. 2.1, 5/13/2008 Rev. 2.1 Page ...
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... List of Tables Table 1: Possible Status Bar Messages........................................................................................... 7 Table 2: Auto-Fill Control Descriptions ......................................................................................... 9 Table 3: Reference Divider Look-Up Table ................................................................................. 13 Table 4: Reference Format Auto-Fill – Register Controls and Values......................................... 18 Table 5: Output Format Auto-Fill – Register Controls and Values.............................................. 19 National Semiconductor Corp. Rev. 2.1, 5/13/2008 Page ...
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... LMH1982 Evaluation Software User Guide The LMH1982 software application was designed by National Semiconductor (NSC) to support the evaluation of the NSC LMH1982 Evaluation Board Platform. The application runs and uses a graphical user interface (GUI) to facilitate programming of the LMH1982. Refer to the LMH1982 datasheet for more information about the device features and operation. ...
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... The LMH1982 application was designed for easy access and control of all device features. The application has four main sections: the Status Bar in the bottom-left corner, the Task Pane on the left, the GUI and Data Grid tabs on the right, and the File Menu in the upper-left corner. National Semiconductor Corp. Rev. 2.1, 5/13/2008 Page ...
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... National Semiconductor Corp. Rev. 2.1, 5/13/2008 Page ...
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... The Data Grid contains all the register addresses and data in a memory array. The READ ALL button must be clicked to update the data grid with the current control register data. The data grid can be accessed to conveniently view all current register contents in tabular format. National Semiconductor Corp. red text nearby to show its associated register refers to bits 2-0 of register address 00h ...
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... Note: To save the current register configuration to a file, you must first click READ ALL to update the Data Grid and then use the SAVE button. See the Error! Reference source not found. section for more information. National Semiconductor Corp. Status / User Action Normal. Proceed to use the application. ...
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... The Reference Format and Output Format drop-down lists in the Auto-Fill panel allow you to select the input reference format and/or the desired output format, respectively. When a selection is made in either list, the GUI will automatically populate specific controls with predetermined values or settings. Refer to the National Semiconductor Corp. Rev. 2.1, 5/13/2008 Page ...
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... In addition, a dialog box will prompt you to program Enable TOF Reset you opt not to program the TOF register controls correctly. See the Top of Frame Output Control section for more information about programming the output format registers. National Semiconductor Corp. * TOF Reset Counter Rev ...
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... To read from a register, select an address (in hex) from the Register drop down list, click READ, and the data will appear in the Read Data drop down list. The Read Data list can be selected to show the data in hex, decimal, and binary form. National Semiconductor Corp. Rev. 2.1, 5/13/2008 Page ...
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... In the Loss of Ref Operation control, you can select Free Run or Holdover as the operating mode upon a loss of reference condition. If Free Run is selected, then the device will operate in free run mode until a reference is reapplied. If Holdover is selected, then the LPF output (pin 31) will National Semiconductor Corp interface register map table in the LMH1982 Rev ...
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... C interface register controls for Genlock Mode and Reference Selection were described in the previous Genlock Control section. Instead of using the I Pin 14 (GENLOCK#) can be applied with logic level inputs to control the Reference Select and Genlock Mode, respectively. 5.3.3 Reference Control National Semiconductor Corp interface, Pin 6 (REF_SEL) and Rev. 2.1, 5/13/2008 2 ...
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... Clock Output Control This panel allows you to select the clock frequency and output mode for the SD clock output and the HD clock output. If the clock output is not used, then you can disable the output, which sets National Semiconductor Corp. REF_DIV Actual PLL Reference ...
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... TOF output pin into high impedance (Hi-Z) mode. The polarity of the output TOF pulse can be selected by changing the value of TOF Pulse Polarity button. A button value of 0 (default) corresponds to negative polarity and a value of 1 corresponds to positive polarity. National Semiconductor Corp. Rev. 2.1, 5/13/2008 Page ...
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... For your reference, this information box provides short descriptions for PLLs 1 – 4. PLL 1 uses an external loop filter and external 27 MHz VCXO, while PLLs 2 – 4 have integrated loop filters and VCOs. 5.3.7 Charge Pump Current Control National Semiconductor Corp. Rev. 2.1, 5/13/2008 Page ...
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... The data grid also enables the control register data to be saved to a file using the SAVE button in the File Menu, described in the next section. National Semiconductor Corp. Rev. 2.1, 5/13/2008 Page ...
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... National Semiconductor Corp. Rev. 2.1, 5/13/2008 Page ...
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... National Semiconductor Corp. Ref_Div FB_Div 0x03[2-0] 0x04-0x05 0 1 1716 0 1 1728 0 1 858 0 1 864 0 1 600 0 ...
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... TOF output, the following two equations should be true: TOF Rate = Reference Clock Frequency / (Output Pixels per Line * Output Lines per Frame) and TOF Reset = Numerator of ratio (REF Frame Rate / TOF Rate) after reduced to lowest integer terms. National Semiconductor Corp. SD Clock TOF Reset TOF Ref. Frequency ...
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... Revision History Revision Date 1.0 November 2007 2.0 February 2008 2.1 May 2008 National Semiconductor Corp. Comments New document created. Revised for LMH1982 Application v2.0. Minor edits. Rev. 2.1, 5/13/2008 Page ...