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Cirrus Logic Crystal Audio (cs4235)
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Reviews
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Date product posted
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0
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4721
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10-28-2004
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Recommended By
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Average Price
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Average Rating
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No recommendations
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None indicated
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None indicated
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Description:
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The Crystal Audio (cs4235) is manufactured by Cirrus Logic. This audio chipset was found in an IBM 300PL. The 300PL has an integrated speaker as well as a phone jack either in the back or the front depending on the generation you have.
In a stock, slackware 10.0 system I found the module here:
/lib/modules/2.4.26/kernel/sound/isa/cs423
did
"modprobe snd-cs4236"
and linux did the rest.
The kernel module is smart enough to turn the internal speaker off when you plug in something in the 1/8" phone jack in the back.
Unfortunately this intergrated chip was not detected and autoconfigured by slackware.
I could not visually identify the chip on the motherboard.
This device is not listed by lspci, and can be found by running pnpdump; the only intelligible part of the dump is a string of text that says "Crystal Audio" but does not list the part numer (cs4235).
Since IBM produced a million of these 300pl's over the years and there seems to be no way to tell them apart, you could have another chipset in your 300pl; I have tried the maestro 3, ac97 and others as suggested on the internet but none work except snd-cs4236.
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Keywords:
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4235 4236 300pl 82371
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Connection Type:
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integrated ISA
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