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Harald Welte laforge at gnumonks.orgHi all, the first draft revision of the schematics and PCB design can be found at http://cgit.osmocom.org/cgit/osmo-e1-xcvr/ (or "git clone git://git.osmocom.org/osmo-e1-xcvr.git") The design has the following features: * the 4x3 and 2x3 jumpers like on the HFC-E1 eval board to set TE mode and NT mode as well as two possible configurations of the pairs * jumper to select between 1.544 MHz and 2.048 MHz oscillator clock i.e. E1/T1 * jumper to decide whether TCLK should be sourced from MCLK or if it is provided externally by the transmitter * 10pin header for SPI control interface * 10pin header for TDM interface * 5x5cm size for cheapest pcb prototyping ;) Comments or feedback is welcome. I decided to use this project to try current EAGLE (I last used it when there was a DOS version, IIRC). So I'm sorry it's not KiCAD / gEDA, but I needed a pet project to evaluate it... Regards, Harald -- - Harald Welte <laforge at gnumonks.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)