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Class D Switching Power Amplifiers and Power D/A conversion

Full Digital / CrossOver / Multi Amplifier integrated
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Old 4th December 2006, 02:55 PM   #21
KOON3876 is offline KOON3876
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Join Date: Nov 2006
Markus:
JackRabbit has I2C C libraries. Just call 1 func to access I2C.
Any Idea on source optimization is welcome. pls email me!

heater:
I'm not familier with AVR but , AVR Development STK200 +USB JTAGICE + AVR Studio + AVRGCC = $139 sounds nice.

I must need below to straight moving
(1) ICE debug
(2) LCD
(3) 6 Key
(4) I2C
(5) GPIO ( 8 bit or so )
(6) 128kB program flash
(7) 4kWord or more RAM
and optional
(6) USB for PC connection?

Do you know any good moduled board for AVR?
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Old 4th December 2006, 03:55 PM   #22
Markus2006 is offline Markus2006  Poland
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I tried to e-mail you but I get:
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Sorry! That user has specified that they do not wish to receive emails through this board. If you still wish to send an email to this user, please contact the administrator and they may be able to help.
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You can change it in your profile settings in the forum.

Marek
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Old 6th December 2006, 07:34 AM   #23
Markus2006 is offline Markus2006  Poland
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Koon,

Have you got the updated code?

marek
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Old 6th December 2006, 02:27 PM   #24
KOON3876 is offline KOON3876
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I was updating Code for these couple of days.
Now lines are almost half, but total ROM size are not so different.

This code controlls..
(1) CS8416 Rx Channel
(2) TAS5518 Volume
(3) External Parallel PSVC (16dB / 4bit)
(4) TAS5518 BiQuad 0,1 (LPF) 2,3 (HPF), Channel Offset, Mute
(5) TAS5518 BiQuad 5,6,7 (Peaking, Low Shelf, High Shelf)
1/3OCt point, Gain, Q
by JackRabbit and CrystalFontz Serial LCD.
Attached Files
File Type: zip notmessynow.zip (7.5 KB, 222 views)
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Old 6th December 2006, 04:03 PM   #25
Markus2006 is offline Markus2006  Poland
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Very nice. I see that you changed the Params structure. I wanted to simplify it with the union keyword but your idea with arrays of structures within a structure is even better. I assume that you added a new functionality but the size of the code is 50% of the previous code. . I like it. I regret only that I don't have JackRabbit to see how it works. But if someone can port it to e.g. AVR (??????), this would become a great software project (OK, it's already such a project). Koon, congratulations.

Marek
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Old 6th December 2006, 09:47 PM   #26
KOON3876 is offline KOON3876
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Join Date: Nov 2006
Hi Marek
Yes I added PSVC control function, and more strict parameter control.

http://microcontrollershop.com/produ...roducts_id=588

I wonder this board can work instead of JackRabbit($49) + CS633($100).
Button is 5, so I should modify to add Save / Cancel Dialog to select save or cancel in 5 buttons. but Flash is 128K, RAM is 4K.

Anyone knows better board?
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Old 10th December 2006, 11:35 PM   #27
KOON3876 is offline KOON3876
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Join Date: Nov 2006
Default SRC4392

I want to replace current CS8416 to TI SRC4392.

Anyone already tried SRC4392? search diyaudio.com has no actual DIY result.

Request for comment to prototype schematic attached.
Attached Files
File Type: zip src4392.zip (65.2 KB, 184 views)
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Old 21st December 2006, 03:17 AM   #28
KOON3876 is offline KOON3876
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I got ATMega128 + LCD + Keypad board today.

http://microcontrollershop.com/produ...roducts_id=588

it will kill my holidays
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File Type: jpg blogphoto 037.jpg (79.6 KB, 1619 views)
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Old 21st December 2006, 03:32 PM   #29
Markus2006 is offline Markus2006  Poland
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Koon,

Which programmer did you buy? It also looks tempting for me :-)

Marek
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Old 21st December 2006, 04:09 PM   #30
KOON3876 is offline KOON3876
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hi Marek
http://microcontrollershop.com/produ...oducts_id=1106

USB AVRJTAG + AVRISP for general programmer & debugger.
(not yet actually tested)
10 pin cable is included. very compact.
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