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Thanks again for the help! Is the start address of sound 2 the end address of sound 1?
There is no PCB artwork in this doc. This should have everything you need to make it work plus a little extra. Thanking you for having read this far…and hoping you might be further up the trail. I have not been too happy with the volume level from the chip.
Hope others will share their thoughts and that this has been a help to someone else. I extend my apologies to those who may have labored through my post. Anyway, something wrong somewhere, I have follow exactly the circuit in page 76 with a voltage regulator to supply it 5V. But nothing happen when I press any push button. Looks like it has a few different commands, but the rest appears to work the same. It is a challenging chip.
When I put them together the expected results fail.
SPI mode offers seamless transitions between sound messages using a buffer which is the feature I require in my application. Some let you know that everything went well or is normal. Because I feel the SE mode seem tedious. Hello, I was wondering how you built your interface. I also tried contacting the engineers for Nuvoton but they don’t seem to exist in the US. I found my problem as to why I could not execute one ISD command after another.
I’m so curious about this way AnalIn But for step 6, we need to design our own board? Is there a schematic available.
You do not have to build a programmer. Comments 26 Comments sorted by Date Added Votes. However, this section may be a simple test to answer your next question as to whether or not the ISD chip is good or defective.
I have not been able to get back to working on the audio level aspect and hope that I might be doing something wrong and the chip will perform better when I become better acquainted with it. I read the design guide several times now but i dont understand the following: What’s odd — for my application, anyway — is that you cannot write the Play Pointer directly. Spi comm with ISD Take note of the speaker output choices and the vol control bits D0-D2 in the APC register page 17 – For hardware SPI, you can reverse the bits by calling a routine before you send data to the chip, and after you receive it.
Mon Apr 25, 5: You referenced page Thank’s for your help. However, it probably is not necessary to build one. I now have successful 2-way communication with the ISD.
SX asm question using SPI mode on ISD1700 ChipCorder series
Nothing is more frustating than losing several dayze hard labour to a computer hiccup It seems the ISD just doesn’t like to cooperate.
I, too, have been experimenting with the ISD series. But it seem really hard to use iss1740 chip. I’ve never done this before, is there any special care or extra setup I should consider?
How can I know whether it is spoil?
Anyway, I will try my best and look at isd174 datasheet again, again and again. I’m from the old school. Below are links that I found helpful. Building the programmer gave me a chance to check out my design. Good news is their ‘design notes’ PDF is very well documented dahasheet you might only have to make 2 pots of coffee to get it up and running. I ended up just using my design board for both standalone mode and SPI mode.
As you write code and debug, keep rereading these rules. I programmed assembly language and machine language back in datasbeet sixties just after we got radio and heard about TV. See the end of this post for an example, and a link to some routines that reverse the bits: Tue Apr 26, 1: When they are there…and when they are not there.
I try to set up the circuit for standalone mode as in page 76 but ksd1740 seems can’t function at all. You can go with the default settings unless there is something in your design that dictates otherwise. These will be handy to have right next to as you will be thumbing through the rest of the manual all the time while still referring to these pages. All I do now is use the ISD on a bread board and activate the pins directly if I want to use push-button datasheeet.