Hardware » History » Version 2
laforge, 02/19/2016 10:50 PM
| 1 | 1 | laforge | = OsmoSDR Hardware = |
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| 2 | |||
| 3 | The OsmoSDR hardware consists of an oscillator, Zero-IF silicon tuner, ADC, FPGA and a USB-capable microcontroller. |
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| 5 | The block schematics looks like this: FIXME |
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| 6 | |||
| 7 | == Major Components == |
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| 8 | |||
| 9 | === Atmel AT91SAM3U Microcontroller === |
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| 11 | The SAM3U is a quite powerful but inexpensive Cortex-M3 based Microcontroller. What makes it special compared |
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| 12 | to many other devices is its integrated USB 2.0 High-Speed device, combined with scatter-gather DMA and an internal |
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| 13 | memory/bus architecture that can actually drive the USB 2.0 at 480Mbps without any problems. |
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| 15 | The SAM3U [wiki:Firmware] will be available as Free Software / Open Source in our git repository. |
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| 17 | === Lattice XFP2 FPGA === |
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| 19 | The FPGA is mainly intended to interface the ADC with the SSC peripheral of the SAM3U. However, it is reasonable |
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| 20 | to assume it can do some simple filtering, too. |
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| 22 | The FPGA design will be available as Free Software / Open Source in our git repository |
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| 23 | |||
| 24 | === Analog Devices AD7357 ADC === |
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| 26 | This ADC provides two channels (I and Q) and can run at up to 4.2 Megasamples / second and provides 14 bits of resolution. |
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| 27 | |||
| 28 | === Silicon Tuner === |
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| 30 | FIXME |
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| 32 | 2 | laforge | === !SiLabs Si570 Oscillator === |
| 33 | 1 | laforge | |
| 34 | The Si570 is a 10MHz to 1.4GHz programmable oscillator. The exact frequency can be set and adjusted via an I2C interface. |
