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Discussion Groups | Analog Devices DSPs | AD73322 Dual AFE communicates with ADSP-2189m?

Technical discussions related to Analog Devices DSPs (including Blackfin, TigerSHARC, SHARC and ADSP-21xx DSPs).

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AD73322 Dual AFE communicates with ADSP-2189m? - tylu - May 8 14:39:00 2003

I am using 2189m EZ-kit which has a dual Analog Front End AD73322. It is used as a 2 channel ADC and DAC. Does anyone has any experience handling the program that communicate between AD73322 and DSP through SPORT? I tried the Talkthrough.asm demo program but it was only for 1 channel. And I can't rewrite the program to 2 channel. And in datasheet, it only defined the LSB 8 bit in control register. So I am not sure what does every bit means.... thx~

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RE: AD73322 Dual AFE communicates with ADSP-2189m? - Dave Tiefenbrunn - May 9 14:54:00 2003

Tylu wrote: > And I can't rewrite the program to 2 channel. I had the same problem. You need to make a "channel sorter" routine. You need 5 variables: Channel, "Chan1in, Chan2in, Chan1out, Chan2out. Be sure to set the initial state of the "Channel" variable. Use TSTBIT and then branch on = zero (or not = zero). After the branch, set the variable to the opposite state - if it was 0, set it to 1 - if it was 1, set it to 0. In one of the branches, RX0 into "Chan1in" and "Chan1out" to TX0. In the other, RX0 into "Chan2in" and "Chan2out" to TX0. This separates the 2 channels. At the end one of the 2 branches, put the code you want to run/process. Use RTI at the end of both branches. Dave David Tiefenbrunn N1WWY Essential Telecommunications Corp. - http://www.essentialtel.com David Tiefenbrunn - http://users.abac.com/dandatief

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