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Recent content by chamarnadh

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    Kintex & FPGA signal integrity for SERDES Signal

    Hi, We are using the Kintex 7 family and device XC7K410T-FFG900 in one of our design. While performing the signal integrity for the SERDES signals and while assigning the IBIS model in Hyperlynx, we are getting the following error. Please find the attached snap shot. And the pins in the...
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    PADS DX designer Schematic to orcad schematic conversion

    Dear All, Can any body help on schematic conversion from Dx Designer to Orcad. Thanks in advance. Regards Amarnadh
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    How can we compare the boot loaders of two different controllers?

    Hi, How we can compare the boot loaders of two different controllers. In on of my project, In place of NXP P89V660FA processor we have to replace with Atmel AT89C51RB2 . Customer asked to check the boot loader compatibility for these two controllers. Please suggest.Hardware wise, NXP is...
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    Microstepping of stepper motor using Atmega16

    HI, Can any one help on how to drive stepper motor (4 wire) using microstepping through Atmega16. I am able to drive in full step mode and half step mode. In half step i am using this sequence {6,2,10,8,9,1,5,4} and in full step {6,10,9,5} But i am not able to drive in micro stepping mode...
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    When the clock frequency increases power consumption also increases why?

    Thank you for your reply. Very useful information . Thanks and regards Amarnadh
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    When the clock frequency increases power consumption also increases why?

    hi, can any body explain the following question. When the clock frequency increases power consumption also increases why? Thanks and regards Amarnadh
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    Latched relays noise problem on 5V supply

    Thank you , I was checked on scope the frequency is few Mhz and the Peak to peak voltage is 7.8V on 5V supply. How can we conform this is inductor noise? Regards Amarnadh
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    Latched relays noise problem on 5V supply

    Hi, In one of design I am using latched relays for switch on and Off the eight power outlets. My problem is when I switching it ON noise is coming on 5V supply even though the supply for Relays is isolated. Noise is different freq for each relay(some times it is 200khz sometimes it is few tens...
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    Noise on USB-5V supply

    Hi, In one of my design based on IMX233 controller, i am using USB interface.USB is hanging while I am switching the latched relays. For relays i am using the isolated power supply.The controller and USB are on unisolated side.the switching noise is some times 340Khz and even more when I...
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    DS12C887 interfacing with AVR micro controllerATMEGA32

    Thank you very much for your reply. I tried with the same above after posting to u yesterday. I found my code is working.Only RTC is the pending in my project.Yesterday we delivered the project also. Thanks and regards Amarnadh
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    DS12C887 interfacing with AVR micro controllerATMEGA32

    Thank you for your reply. I am doing like what you said. But i am unable to access the rgisters of RTC DS12C887. I am attaching my code. Please verify and suggest the mistakes if any. Thank you Amarnadh
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    DS12C887 interfacing with AVR micro controllerATMEGA32

    Hi, Can any one help me on interfacing the DS12C887 RTC with ATMEGA32. My problem is how we can access the DS12C887 registers with the above micro controller.DS12C887 has multiplexed Address and Data bus. In 8051 controllers we are using with XBYTE function. But that is not working in AVR...
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    [SOLVED] how to use ic 7404 with l293d motor driver

    Hi, If you want to run the motor, You have to give +ve to 2nd pin and -ve to 7th pin , and vice versa,connect the same configuration for the second channel . If the inputs are driving from HT12D directly the i/ps must be 1010 or 0101 then only the motor works. Rgds Amarnadh
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    [SOLVED] how to use ic 7404 with l293d motor driver

    HI, Now u want to connect HR12D o/p pins to L293D. In your PCB remove the 7404 IC, and short the 4i/ps which are driving from HT12D outputs and o/p pins of the respective i/ps of 7404. this may be helpful
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    [SOLVED] how to use ic 7404 with l293d motor driver

    Hi, I think HT12D o/p is 4 data bits.This u r going to invert and drive the motor as per my understand. Why this inversion is required for u?. L293 is a four channel driver.U want to control 4 motors or two motors with dual direction.? Rgds Amarnadh.
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