[alsa-devel] Swissonic TS22PCI / Teratec Phase 22 / driver problems with ice1724

Manuel Schneider manuel.schneider at kanal-ratte.de
Thu Aug 14 18:05:27 CEST 2008

Am Donnerstag, 14. August 2008 schrieb Takashi Iwai:
> > I guess it's another firmware...
> The board has no firmware to load.

well, I was thinking of the eeprom.

> First you should check whether the exactly same codec chip, AK4524, on
> it.

Yes, it has, but another model no (or whatever it is). I just have both 
cards - the original Phase 22 and the new TS22 here:

Phase 22:
AKM AK4524VF 193A0547N
VIA ENVY24HT-S VT1721-0522CD 2IA0000551

AKM AK4524VF 247A0805N
VIA ENVY24HT-S VT1721-0810CD 2IA0001861

The PCBs are nearly the same, but the TS22 lacks the following parts:
X3 quartz
UD09 and UD10 (both ICs)

On the Back of the Swissonic TS22 it says "Terrasoniq" - which is knows as yet 
another vendor of sound cards. Swissonic seems to be just another brand of 
the same product.

Something about the noise / recording:
When I unpug the lines, the noise still persists.
When I fade down both ADC lines with alsamixer, the noise perists until I 
reach 0. Then it is mute.
When I fade up ADC1 I can hear some of the to-be-recorded signal very 
distorted behind the noise.



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