Glossary » History » Revision 2
Revision 1 (laforge, 02/19/2016 10:48 PM) → Revision 2/3 (laforge, 02/19/2016 10:49 PM)
{{>toc}} h1. [[PageOutline]] = Glossary of phone design related terms h2. = == ABB == Analog Base Band h2. == DBB == Digital Base Band h2. == TPU == Time Processing Unit. A programmable state machine to control events synchronous to the GSM bitclock h2. == TSP == Time Serial Port. Synchronization bus used for timing certain digital control signals. h2. == DSP == Digital Signal Processor h2. == MCU == Micro Controller Unit (the ARM CPU in the Calypso) h2. == BSP == Baseband Serial Port. Communicates digital I/Q samples between ABB and DBB h2. == USP == uController Serial Port. A SPI control interface between the MCU(ARM) in the DBB and the ABB h2. == VSP == Voiceband Serial Port. Communicates speech samples between the DBB(DSP) and the ABB h2. == UL [[UpLink]]. == UpLink. The direction from the MS to the BTS. (Phone Tx) h2. == DL [[DownLink]]. == DownLink. The direction from the BTS to the MS. (Phone Rx)
