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| − | == Motherboard Connectors ==
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| − | === part numbers for the 120pin connector ===
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| − | - The [[120pin connector]] that goes on the gumstix is the part #55686-1274 from Molex.
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| − | - the mating connector from Molex is part #54876-1274 (discontinued)
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| − | - The new mating connector from Molex is part # 0546841204
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| − | === part numbers for the 24-pin flex connector ===
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| − | FH12A-24S-0.5SH(55) Digikey part HFK124CT-ND
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| − | The [[24pin connector]] was added to the verdex motherboard in response to customer demands for a daughtercard on the 120-pin side of the motherboard that provides UART, USB host etc function on the 24pin/120pin side of the verdex motherboard as these functions are normally "60-pin" type functions.
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| − | With a flat flex cable, it should be easy to bring those functions from the 24-pin flex connector onto a custom board on the120-pin side of the verdex motherboard in order to reduce the thickness of the board "sandwich".
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| − | Additionally, for very simple gumstix implementation scenarios, (e.g. connecting say an I2C sensor to a gumstix), the 24-pin flex connector is lower cost & easier to integrate than the 60- or 120-pin connectors.
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| − | Gumstix added the 24-pin flex connector to address several issues:
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| − | 1) being able to get a console while the motherboard is otherwise in use without the physical limitations of the tweener.
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| − | 2) USB Host.
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| − | 3) Battery for RTC.
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| − | 4) Daughtercards that need a flex connector.
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| − | === part numbers for the 60-pin connector ===
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| − | Hirose DF12D(3.0)60DP0.5V80.
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| − | The [[60pin connector]] is 0.5mm pitch and has an interboard distance of 3mm, so working with it really requires using surface mount pads and techniques.
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Revision as of 21:19, 17 October 2008
Processor documentation
Marvell® PXA270 with XScale™ Processor documentation:
Bluetooth: PBA31308
Infineon publishes this PBA31308 documentation for the Infineon PBA31308 module RoHS-compliant (Class 2 Bluetooth™) used in gumstix
Ethernet: SMSC module
As of the Spring 2007, Gumstix uses the SMSC LAN91C111 ethernet module for the various 92-pin and 120-pin expansion boards. The manufacturer specs for the SMSC module are posted here.
Antenna: Wistron antenna used for wifi and verdex Bluetooth
The document has been posted here.
Posting of this document to a gumstix wiki page was approved in February, 2007 by Kenny Young of
W-Neweb Corporation in San Jose, California.
.
