Texas Instruments TMS320C67 DSP Series Programmer's Reference Manual page 116

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service layer: The top layer of the 2-layer chip support library architecture
providing high-level APIs into the CSL and BSL. The service layer is
where the actual APIs are defined and is the layer the user interfaces to.
synchronous-burst static random-access memory (SBSRAM): RAM
whose contents does not have to be refreshed periodically. Transfer of
data is at a fixed rate relative to the clock speed of the device, but the
speed is increased.
synchronous dynamic random-access memory (SDRAM): RAM whose
contents is refreshed periodically so the data is not lost. Transfer of data
is at a fixed rate relative to the clock speed of the device.
syntax: The grammatical and structural rules of a language. All higher-level
programming languages possess a formal syntax.
system software: The blanketing term used to denote collectively the chip
support libraries and board support libraries.
tag: The 18 most significant bits of the program address. This value corre-
sponds to the physical address of the fetch packet that is in that frame.
timer: A programmable peripheral used to generate pulses or to time
events.
TIMER module: TIMER is an API module used for configuring the timer reg-
isters.
word: A multiple of eight bits that is operated upon as a unit. For the C6x, a
word is 32 bits in length.
Glossary
Glossary C-7