Manufacturer's specifications

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PBA31308 Rohs-compliant Bluetooth module specifications

Infineon publishes this PBA31308 documentation

SMSC ethernet 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.

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.

Motherboard Connectors

part numbers for the 120-pin connector

- The 120 pin connector that goes on the gumstix is the part #55686-1274 from Molex.

- the mating connector from Molex is part #54876-1274 (discontinued)

- The new mating connector from Molex is part # 0546841204


part numbers for the 24-pin flex connector

FH12A-24S-0.5SH(55) Digikey part HFK124CT-ND

The 24-pin flex 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.

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".

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.


Gumstix added the 24-pin flex connector to address several issues:

1) being able to get a console while the motherboard is otherwise in use without the physical limitations of the tweener.

2) USB Host.

3) Battery for RTC.

4) Daughtercards that need a flex connector.


part numbers for the 60-pin connector

Hirose DF12D(3.0)60DP0.5V80.

It is 0.5mm pitch and has an interboard distance of 3mm, so working with it really requires using surface mount pads and techniques.