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Hi, I want to use MATLAB GUI to do something. Part of it, now I make a keyboard with 26 push buttons where each of them represent an alphabet that is from A till Z. Now I have also 6 fix texts on my GUI. I want each time I click on one of the push button, it comes out the alphabet on first fix...
Hi,
I am very very new to FPGA. I plan to create flash format audio file and design a FPGA chip as microcontroller to control the playing of flash format audio file. So I need an OS in my FPGA chip. May I know to what direction I need to start with? Is FPGA possible to build with an OS? It is...
MEMS Capacitive Switch
Have no idea at all what is it. It is switch on the PCB board? We need to design our own size and features or we can buy available one in the market?
I wish to use some kind of switches as indicator for my systems that certain input will trigger certain switches and...
edge triggered jk flip flop
As I know that JK flip flop is to avoid the ambiguous case in SR (NAND latch) where S=R=1 is ambiguous. But I can't see from the internal circuit for JK flip flop that it can avoid ambiguous case when J=K=1. It seems it also need to depend which is start feedback Q...
isd 2500
ya, is with the 1k resistor then to ground. I also found out the LED will light up whenever the address pin for A9, A8 or A6 is low. As long as either of them low, LED will light up. Really wonder why...
Thanks.
cincailo
isd2500 worked out examples circuit design
Now facing a problem at the EOM, end of marker, LED. As I put an LED at the EOM pin, it light up as long as there is power supply even if the chip is in power down mode. This make me feel so upset. Already check the circuit for many times, it really...
isd2560 25120 application data
Really thanks so much. With attachment is the datasheet, I use the circuit example in page 30. Quite similar, except that I use LM386 with 8ohm speaker as in other set of its manual. Another part is I connect all the A0 to A9 address line to a pull down network...
manual isd25xx
Hi,
I thought you done with the ISD25xx before. Erm... According to the datasheet for push button mode, I should shift PD= low (!EOM low, LED doesn't light up) then change to P/!R = low to record (!EOM still low, LED still doesn't light up) then !CE pin= low, recording start...
how to use isd25120
Ya, I know that the preamplifier and I did connect the speaker with preamplifier LM386 and then a 8ohm speaker. But seem no output at all. Voltage at the speaker area is 0V. Is it the EOM problem? Since in the datasheet it stated that need to wait for EOM to become low only...
isd 25120 example
Hi,
Actually how to manage it? I already connect all the things as in the application notes the circuit on breadboard but it seem no sound at all. Problem is I don't know whether is recording part got problem or the playing part got problem or because it is ISD 25120 with low...
isd 2500
Hi,
I bought a ISD25120 chip and then only I found out it is noisy and low sample rate (only 4KHz). But I wish to get output 8kHz which is much clearer, can I change the sample rate? How to change it? I should buy ISD2560 which can give me better output and 8kHz sample rate but...
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