Glossary » History » Version 1
laforge, 02/19/2016 10:48 PM
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| 1 | 1 | laforge | [[PageOutline]] |
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| 2 | |||
| 3 | = Glossary of phone design related terms = |
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| 4 | |||
| 5 | == ABB == |
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| 6 | Analog Base Band |
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| 7 | |||
| 8 | == DBB == |
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| 9 | Digital Base Band |
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| 10 | |||
| 11 | == TPU == |
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| 12 | Time Processing Unit. A programmable state machine to control events synchronous to the GSM bitclock |
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| 13 | |||
| 14 | == TSP == |
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| 15 | Time Serial Port. Synchronization bus used for timing certain digital control signals. |
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| 16 | |||
| 17 | == DSP == |
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| 18 | Digital Signal Processor |
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| 19 | |||
| 20 | == MCU == |
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| 21 | Micro Controller Unit (the ARM CPU in the Calypso) |
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| 22 | |||
| 23 | == BSP == |
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| 24 | Baseband Serial Port. Communicates digital I/Q samples between ABB and DBB |
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| 25 | |||
| 26 | == USP == |
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| 27 | uController Serial Port. A SPI control interface between the MCU(ARM) in the DBB and the ABB |
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| 28 | |||
| 29 | == VSP == |
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| 30 | Voiceband Serial Port. Communicates speech samples between the DBB(DSP) and the ABB |
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| 31 | |||
| 32 | == UL == |
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| 33 | UpLink. The direction from the MS to the BTS. (Phone Tx) |
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| 34 | |||
| 35 | == DL == |
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| 36 | DownLink. The direction from the BTS to the MS. (Phone Rx) |
