PXA270 datasheet(121/126 Pages) INTEL

121 / 126 page

Electrical, Mechanical, and Thermal Specification

Glossary-11

Intel® PXA270 Processor

Glossary

Sample: The smallest unit of data on which an endpoint operates; a property of an endpoint.

Sample Rate (Fs): The number of samples per second, expressed in Hertz (Hz).

Sample Rate Conversion (SRC): A dedicated implementation of the RA process for use on sampled analog data

streams. The error control mechanism is replaced by interpolating techniques. Service A procedure provided by a

System Programming Interface (SPI).

Satellite Phone: Phones that connect callers by satellite. Users have a world-wide alternative to terrestrial

connections. Typical use is for isolated users, such as crews of deep-see oil rigs with phones configured to connect

to a satellite service.

SAV: Start of active video

SAW: Surface Acoustic Wave filter

SDRAM: Synchronous Dynamic Random Access Memory.

Service Interval: The period between consecutive requests to a USB endpoint to send or receive data.

Service Jitter: The deviation of service delivery from its scheduled delivery time.

Service Rate: The number of services to a given endpoint per unit time.

SIMD: Single Instruction Multiple Data (a parallel processing architecture).

Smart Phone: A combination of a mobile phone and a PDA, which allow users to communicate as well as perform

tasks; such as, accessing the Internet and storing contacts in a database. Smart phones have a PDA-like screen.

SMROM: Synchronous Mask ROM

SMS: Short Messaging Service. A service through which users can send text-based messages from one device to

another. The message can be up to 160 characters and appears on the screen of the receiving device. SMS works

with GSM networks.

SOC: System On Chip

SOF: See Start-of-Frame.

SOP: Start-of-Packet.

SPI: See System Programming Interface. Also, “Serial Peripheral Interface protocol.

SPI: Serial Peripheral Interface

Split transaction: A transaction type supported by host controllers and hubs. This transaction type allows full- and

low-speed devices to be attached to hubs operating at high-speed.

Spread Spectrum: An encoding technique patented by actress Hedy Lamarr and composer George Antheil, which

broadcasts a signal over a range of frequencies.

SRAM: Static Random Access Memory.

SRC: See Sample Rate Conversion.

SSE: Streaming SIMD Extensions

PXA270 Datasheet(PDF) 121 Page - Intel Corporation