which chips support ASIO?

Smalleyes · Jun 24, 2008, 05:01 PM

i wanna design a card support ASIO and USB,but i don't kown which main chip is suitable.PCM2902E or ENVY24 or some else?

any help would be appreciated

Max M. · Jun 24, 2008, 07:52 PM

ENVY24 is a PCI audio controller so i doubt if you can use it for USB audio device.
PCM2902E seems to fit.

ASIO is more a driver feature rather than hardware's one. Virtually, you can add ASIO support to whatever hardware it is, but you'll have to write your own driver to achieve this.
If you simply make a "class complaint" USB audio device - you'll be able to use standard Microsoft’s usbaudio driver (as well as standard Apple's driver for OSX) but that driver has no ASIO support. (Although you’ll be able to get ASIO with a workaround like Asio4All; edit: there're also alternative "class complaint" drivers such as USB Audio).

Smalleyes · Jun 25, 2008, 05:44 AM

thanks for your reply

i wanna make a card just like UCG102(a guitar link made by Behringer).So i really want to kown which main chip it uses......

if i use the same one,can i use the driver of UCG102?

Max M. · Jun 25, 2008, 07:04 AM

Sorry, i don't know what chip UCG102 uses.
Note that most of today devices are firmware based - e.g. besides the same HW components you need to use same firmware to be able use same driver
(well, by UCG102 Control Panel i can guess its driver is some derivative of USB Audio)

[color=gray](although, if everything is the same, looking at UCG102 price i'd say "hmm... why bother...")[/color]

Smalleyes · Jun 25, 2008, 07:24 AM

thanks very much

i am just interested in USB Audio,and i am a fresh man in this field.Learning something easier can help me make progress.So i wanna do something easier first

Max M. · Jun 25, 2008, 07:55 AM

(btw. digging into UCG102 spec. i would say that it is highly likely to be based on PCM2902 (or some similiar TI chip)...
And, yeah, PCM2902 seems to be the easiest one to start with - it is "firmware-less" (e.g. it's hardcoded to be a "usb audio class compliant") - so you get it ready-to-be-used with no single line of code (firmware or software)... but, as a consequence - it's almost no learning then - everything is pre-made

)

Smalleyes · Jun 25, 2008, 01:56 PM

Haha.....you are so kind.thanks a lot

Jun 24, 2008, 05:01 PM	#1
Smalleyes DriverHeaven Newbie Join Date: Jun 2008 Posts: 4 Rep Power: 0	which chips support ASIO? i wanna design a card support ASIO and USB,but i don't kown which main chip is suitable.PCM2902E or ENVY24 or some else? any help would be appreciated

Jun 24, 2008, 07:52 PM	#2
Max M. h/h member-shmember Join Date: Dec 2002 Location: Evil Empire Posts: 2,639 Rep Power: 69	ENVY24 is a PCI audio controller so i doubt if you can use it for USB audio device. PCM2902E seems to fit. ASIO is more a driver feature rather than hardware's one. Virtually, you can add ASIO support to whatever hardware it is, but you'll have to write your own driver to achieve this. If you simply make a "class complaint" USB audio device - you'll be able to use standard Microsoft’s usbaudio driver (as well as standard Apple's driver for OSX) but that driver has no ASIO support. (Although you’ll be able to get ASIO with a workaround like Asio4All; edit: there're also alternative "class complaint" drivers such as USB Audio). __________________ Last edited by Max M.; Jun 24, 2008 at 08:01 PM.

Jun 25, 2008, 07:04 AM	#4
Max M. h/h member-shmember Join Date: Dec 2002 Location: Evil Empire Posts: 2,639 Rep Power: 69	Sorry, i don't know what chip UCG102 uses. Note that most of today devices are firmware based - e.g. besides the same HW components you need to use same firmware to be able use same driver (well, by UCG102 Control Panel i can guess its driver is some derivative of USB Audio) [color=gray](although, if everything is the same, looking at UCG102 price i'd say "hmm... why bother...")[/color] __________________ Last edited by Max M.; Jun 25, 2008 at 07:11 AM.

Jun 25, 2008, 07:55 AM	#6
Max M. h/h member-shmember Join Date: Dec 2002 Location: Evil Empire Posts: 2,639 Rep Power: 69	(btw. digging into UCG102 spec. i would say that it is highly likely to be based on PCM2902 (or some similiar TI chip)... And, yeah, PCM2902 seems to be the easiest one to start with - it is "firmware-less" (e.g. it's hardcoded to be a "usb audio class compliant") - so you get it ready-to-be-used with no single line of code (firmware or software)... but, as a consequence - it's almost no learning then - everything is pre-made ) __________________

Jun 25, 2008, 05:44 AM	Thread Starter #3
Smalleyes DriverHeaven Newbie Join Date: Jun 2008 Posts: 4 Rep Power: 0	thanks for your reply i wanna make a card just like UCG102(a guitar link made by Behringer).So i really want to kown which main chip it uses...... if i use the same one,can i use the driver of UCG102?

Jun 25, 2008, 07:24 AM	Thread Starter #5
Smalleyes DriverHeaven Newbie Join Date: Jun 2008 Posts: 4 Rep Power: 0	thanks very much i am just interested in USB Audio,and i am a fresh man in this field.Learning something easier can help me make progress.So i wanna do something easier first

Jun 25, 2008, 01:56 PM	Thread Starter #7
Smalleyes DriverHeaven Newbie Join Date: Jun 2008 Posts: 4 Rep Power: 0	Haha.....you are so kind.thanks a lot