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20 Threads found on edaboard.com: Change Clock Speed
High speed DACs are operated with continuous clock, in so far the discontinuous or continuous nature of transmitted signal doesn't change much to it's power consumption. They are usually providing complementary current outputs, means that total output current is constant independent of signal magnitude. Setting time of different types is (...)
How quickly do you need things? One per clock? Multiple clock cycles? For the most varied applications, temperature change occurs at a quite small rate, so that I guess speed should not be a problem.
A problem with increasing the clock and processor speed is that the peripheral clock will increase as well this would lead to you having to change UART baud rate counters, timer counters, etc (plus I2C, SPI, CAN, ????) also if you are using delays using simple loops, e.g. to slow read/writes to an LCD or similar device, (...)
The clock speed you provide will be fixed. But the performance of the design will change with a chipscope core will change, probably negatively, as it now needs more resources and routing than before. But the key point is whether it still meets your timing requirements. If you dont have full timing specifications, or lots (...)
Hello guys, Here is my question. i have bought a DDR2 memory and when i look at the datasheet, it doesn't talk about the internal clock freq. of DDR2. Does it mean that there is no crystal clock inside? if not is the working freq. supplied by DDR2 controller? or by clock tree which is completely independant of DDR2 controller? when i (...)
I think about the speed of display refresh is to fast than simulator, you can reduce the Frame per seconds into System/Set Animation Options... (but animation run low) Or change delay to refesh the display in c code.
when I do at-speed DFT, I want to using the PLL output as refclk1 for launch and capture clock. But there is a question, if the default PLL output clock frequency is not what I want. How can I make the PLL output clock turn to the right frequecy? Use strap pin? 2. Can I config the PLL register to change (...)
Hello, I am rather new on VHDL. I have done some code in the past but I have a problem concerning how to manipulate B and C signals (as shown below). Actually, it is a state machine and I am trying to change the logic of these signals (B & C) in half of the clock pulse. Could you please give me some hints how to do it? Thank you [ATTACH=CONFIG
Suppose a one bit signal is coming from one clock domain and is necessary to be transferred to another clock domain. The one bit signal may change in frequently and even once in every two/one clock cycle. How can this signal be transferred? Can there be any handshake mechanism to transfer this one bit signal to another (...)
memory at-speed testing how to change the function clock ,when testing memory with at-speed testing. how memory at-speed controller work at function clock? thanks Regards
In MTBF formula, some points are really confusing . MTBF= where fclk -> destination clock frequency fdata-> is data change frequency T0-> width of setup & hold window tr-> time in which metastability is resolved tau-> speed at which metastability is resolved Pleas
Just change the port names, the rest will work exactly as before. The 12C508A does not have a port B ! Also check the clock speed is the same or your timing will be wrong. Brian.
I feel based on the clock frequency speed will change. If you are using higher clock frequency it will increase the speed of memory. To find out the speed of memory its not a guess work. If you find out then please let me know. Regards Chanchal
I want to use a ADC with sampling speed upto 1Gsps. The ADC require a differential or single-ended PECL/LVDS clock. Here I have a signal generator, but its output is sine wave. I want to use this signal generator to drive the ADC clock, so that I can easily change the ADC sampling speed as I want. My (...)
how can I change digital clock speed? for instance if it's coming from a 30Mhz crystal, how can make the clock run at 200Mhz? the digital clock speeds need to be increased by a fractional number.. but how? thanks
1. you can change evrything in ise. 2. it depends on your device in some devices it means faster device, in some its viceversia. 3. if you are programmer - hw changes should be transparent to you. however slower device , mean slower cpu clock rate, and has probebly implication on software.
Hi, I'm using TMS320F2812 DSP. I want to operate this at variable speed on the fly. One way would be by generating different clock outputs at different instants and provide this as the clock input to the DSP. Another would be to change the PLL settings. Is there any other mechanism? Also, would there be any side effects (...)
Hi, Remeber, if change your current you should redesign the transistors W/L in order to reach the desired result. For increasing the circuit speed (esp. an opamp), you should increase the gm of the input ransistors. So, you should increase the tail current to increae the gm. But, you should redesign the circuit with the new tail current. For the
hi as i know, the synchronous interfaces (SDRAM-data/addr, DDR-address) sample the data/address at the CLK rising edge. But what i want to know, when do they change the data/address on the bus? at the CLK rising edge or falling edge? If at the same rising edge as it is used for sampling, then the hold margins are very critical.
Following is my understanding, I hope somebody can help me for understanding. There are two kinds of atpg test: low speed test and at-speed test. When at-speed test, I found we didn't need to change the frequence of test clocks. The difference between low speed and (...)


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