Difference between revisions of "CDC slot"

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The Communications Daughter Card slot in IBM literature or Modem Daughter Card slot (MDC) in Intel's standards, is an internal expansion slot found in older ThinkPads. Much like the MiniPCI slot, it is generally used as the 'mobile' variant of the Audio/Modem riser expansion slot.
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The Communications Daughter Card slot (CDC) in IBM literature or Modem Daughter Card slot (MDC) in Intel's standards, is the mobile version of the Audio/Modem Riser slot. There are two known implementations of this slot, featuring different connectors for different platforms.
  
Please note that all AC'97 ThinkPads with a CDC slot, utilize the Hirose DF12(5.0)-40DP-0.5V(86) connector, which is not compliant with Intel's MDC standard (specifies a TE Connectivity 3-179397-0 connector). The reason for violating the standard is unknown, but it is likely to be along the lines of IBM locking-in its customers to disallow purchasing identical CDCs from other competing manufacturers.
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The Hirose DF12(5.0)-40DP-0.5V(86) connector is used on ThinkPads with an AC'97 audio codec, while the TE Connectivity 1-1775149-2 connector is used on ThinkPads with a HD Audio codec. These connectors may or may not be proprietary, although the Hirose connector is proprietary as it does not adhere to Intel's MDC standard, which specifies a TE Connectivity 3-179397-0 connector instead.
  
On the other hand, all HD Audio ThinkPads with a CDC slot utilize an unknown 18-pin ACES connector. This connector was also used by other competing manufacturers, which may allow the usage of their CDCs in a HD Audio ThinkPad. However, this might trigger an 'Invalid Daughter Card' error.
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[http://en.wikipedia.org/wiki/Mobile_Daughter_Card Wikipedia article on CDC]
* [http://en.wikipedia.org/wiki/Mobile_Daughter_Card Wikipedia article on CDC]
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=== Overview ===
 
=== Overview ===
Certain CDCs may not work in certain ThinkPads, even if they are using the same connector. This is due to a different electrical pin-out, which varies among ThinkPads. Some might even reject a CDC by displaying an 'Error 1803: Invalid Daughter Card' message.
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Not all CDCs will work in compatible ThinkPads, even if they are using the same connector. This is due to a different electrical pin-out, which varies among ThinkPads. Some might even reject a pin-compatible CDC by displaying an 'Error 1803: Invalid Daughter Card' message.
  
In some cases, a CDC from a newer ThinkPad may work in an older ThinkPad, although with limited functionality. Such a case exists, as an R32 using a BMDC taken from an R40 worked with no issue. It was not able to activate its Bluetooth functionality however, due to the said electrical pin-out difference.
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Note that all AC'97 CDCs are 45 x 27 mm, and all HD Audio CDCs are 34 x 26 mm.
=== List of available Communication Daughter Cards===
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* [[Ethernet Daughter Card (EDC)]] (a second 14pin connector goes to the RJ45 socket (I guess)) (45 x 27 mm)
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* [[Bluetooth Daughter Card (BDC)]] (additional 3 or 4 pin connector for what? one (or two) antenna connectors) (45 x 27 mm)
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* [[Modem Daughter Card (MDC)]] (45 x 27 mm)
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* [[ThinkPad 56K Modem (MDC-1.5)]] (an extra header (around 4 pins?) for RJ11 socket and something else) (45 x 27 mm)
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* [[IBM Integrated 56K Modem (MDC-2)]] (45 x 27 mm)
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* [[ThinkPad Modem (MDC-3.0, 56kbps HDA)]] (34 x 26 mm)
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* [[IBM Integrated Bluetooth II with 56K Modem (BMDC)]] (extra header and antenna connector) (45 x 27 mm)
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* [[IBM Integrated Bluetooth III with 56K Modem (BMDC-2)]] (45 x 27 mm)
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* [[IBM Integrated Bluetooth IV with 56K Modem (BMDC-3)]] (45 x 27 mm)
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=== See also ===
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=== CDCs ===
* [[Bluetooth Daughter Card (14 pins)]] (doesn't use the CDC slot, different connector)
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==== Ethernet CDCs ====
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* [[Ethernet Daughter Card (EDC)]]
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==== Bluetooth CDCs ====
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* [[Bluetooth Daughter Card (BDC)]]
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==== Modem CDCs ====
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* [[Modem Daughter Card (MDC)]]
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* [[ThinkPad 56K Modem (MDC-1.5)]]
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* [[IBM Integrated 56K Modem (MDC-2)]]
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* [[ThinkPad Modem (MDC-3.0, 56kbps HDA)]]
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==== Combo Modem and Bluetooth CDCs ====
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* [[IBM Integrated Bluetooth II with 56K Modem (BMDC)]]
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* [[IBM Integrated Bluetooth III with 56K Modem (BMDC-2)]]
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* [[IBM Integrated Bluetooth IV with 56K Modem (BMDC-3)]]
  
{{gallery_start}}
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== Models featuring this technology ==
{{thumb|T43-2686-DGU-CDC.jpg|CDC in a ThinkPad T43-2686}}
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*{{W500}}
{{thumb|dscf0118.png|analog modem 56k at cdc}}
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*{{A30}}, {{A30p}}, {{A31}}, {{A31p}}
{{thumb|dscf0119.png||rear cover that houses the cdc at x41}}
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*{{T23}}, {{T30}}, {{T40}}, {{T40p}}, {{T41}}, {{T41p}}, {{T42}}, {{T42p}}, {{T43}}, {{T43p}}, {{T60}}, {{T60p}}, {{T61}}, {{T61p}}, {{T400}}, {{T500}}
{{gallery_end}}
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*{{X22}}, {{X23}}, {{X24}}, {{X30}}, {{X31}}, {{X32}}, {{X40}}, {{X41}}, {{X41T}}, {{X60}}, {{X60s}}, {{X60 Tablet}}, {{X61}}, {{X61s}}, {{X61 Tablet}}
 
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*{{R30}}, {{R31}}, {{R32}}, {{R40}}, {{R40e}}, {{R50}}, {{R50e}}, {{R50p}}, {{R51}}, {{R51e}}, {{R52}}, {{R60}}, {{R60i}}, {{R60e}}, {{R61}}, {{R61i}}
=== Models featuring this technology ===
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*{{G Series}}
* ThinkPad {{A30}}, {{A30p}}, {{A31}}, {{A31p}}
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*{{S30}}, {{S31}}
* ThinkPad {{G Series}}
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*{{Z Series}}
* ThinkPad {{R30}}, {{R31}}, {{R32}}, {{R40}}, {{R40e}}, {{R50}}, {{R50e}}, {{R50p}}, {{R51}}, {{R51e}}, {{R52}}, {{R60}}, {{R60i}}, {{R60e}}, {{R61}}, {{R61i}}
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* ThinkPad {{S30}}, {{S31}}
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* ThinkPad {{T23}}, {{T30}}, {{T40}}, {{T40p}}, {{T41}}, {{T41p}}, {{T42}}, {{T42p}}, {{T43}}, {{T43p}}, {{T60}}, {{T60p}}, {{T61}}, {{T61p}}, {{T400}}, {{T500}}
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* ThinkPad {{W500}}
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* ThinkPad {{X22}}, {{X23}}, {{X24}}, {{X30}}, {{X31}}, {{X32}}, {{X40}}, {{X41}}, {{X41T}}, {{X60}}, {{X60s}}, {{X60 Tablet}}, {{X61}}, {{X61s}}, {{X61 Tablet}}
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* ThinkPad {{Z Series}}
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[[Category:Components]]
 
[[Category:Components]]

Revision as of 15:35, 18 December 2019

AC97CDCSlot.png HDACDCSlot.png

The Communications Daughter Card slot (CDC) in IBM literature or Modem Daughter Card slot (MDC) in Intel's standards, is the mobile version of the Audio/Modem Riser slot. There are two known implementations of this slot, featuring different connectors for different platforms.

The Hirose DF12(5.0)-40DP-0.5V(86) connector is used on ThinkPads with an AC'97 audio codec, while the TE Connectivity 1-1775149-2 connector is used on ThinkPads with a HD Audio codec. These connectors may or may not be proprietary, although the Hirose connector is proprietary as it does not adhere to Intel's MDC standard, which specifies a TE Connectivity 3-179397-0 connector instead.

Wikipedia article on CDC

Overview

Not all CDCs will work in compatible ThinkPads, even if they are using the same connector. This is due to a different electrical pin-out, which varies among ThinkPads. Some might even reject a pin-compatible CDC by displaying an 'Error 1803: Invalid Daughter Card' message.

Note that all AC'97 CDCs are 45 x 27 mm, and all HD Audio CDCs are 34 x 26 mm.

CDCs

Ethernet CDCs

Bluetooth CDCs

Modem CDCs

Combo Modem and Bluetooth CDCs

Models featuring this technology