Difference between revisions of "CS4248"

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(ThinkPad's this chip may be found in)
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=== CS4248 ===
 
=== CS4248 ===
 
This is a Cirrus Logic Audio controller
 
This is a Cirrus Logic Audio controller
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On the TP750 series, this chip is incorrectly called an <i>MWave Audio Codec</i> in marketing literature
  
 
=== Features ===
 
=== Features ===
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|style="vertical-align:top" |
 
|style="vertical-align:top" |
 
|}
 
|}
 
=== Linux OSS driver ===
 
The Linus OSS drivers do not support this chipset, because the chip is implemented in a unique way in the IBM ThinkPads where the chip is disabled by default to conserve power, and requires some magic to enable it first.
 
  
 
=== Linux ALSA driver ===
 
=== Linux ALSA driver ===
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  options snd-ad1848 snd_index=0 snd_port=0x4e30 snd_irq=10 snd_dma1=0 snd_thinkpad=1
 
  options snd-ad1848 snd_index=0 snd_port=0x4e30 snd_irq=10 snd_dma1=0 snd_thinkpad=1
  
=== ThinkPad's this chip may be found in ===
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If you're running Debian Woody: Its ALSA 0.9 hasn't this Thinkpad support yet. Hence, you need to recompile the kernel (2.4.18) including the soundcore module and adding ALSA 1.0.
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=== ThinkPads this chip may be found in ===
 
* {{360PE}}
 
* {{360PE}}
 
* {{750}}, {{750C}}, {{750Cs}}, {{750P}}
 
* {{750}}, {{750C}}, {{750Cs}}, {{750P}}
 
* {{755C}}, {{755Cs}}
 
* {{755C}}, {{755Cs}}
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[[Category:Audio Devices]]

Latest revision as of 14:21, 15 November 2020

CS4248

This is a Cirrus Logic Audio controller

On the TP750 series, this chip is incorrectly called an MWave Audio Codec in marketing literature

Features

  • Chipset: CS4248
  • Interface: ISA 16bit

Linux ALSA driver

This sound chip is supported by the snd-ad1848 kernel module. Use the following options line when loading this module:

options snd-ad1848 snd_index=0 snd_port=0x4e30 snd_irq=10 snd_dma1=0 snd_thinkpad=1

If you're running Debian Woody: Its ALSA 0.9 hasn't this Thinkpad support yet. Hence, you need to recompile the kernel (2.4.18) including the soundcore module and adding ALSA 1.0.

ThinkPads this chip may be found in