PXA270 datasheet(122/126 Pages) INTEL

122 / 126 page

Glossary-12

Electrical, Mechanical, and Thermal Specification

Intel® PXA270 Processor

Glossary

SSE2: Streaming SIMD Extensions 2: for Intel Architecture machines, 144 new instructions, a 128-bit SIMD

integer arithmetic and 128-bit SIMD double precision floating point instructions, enabling enhanced multimedia

experiences.

SSP: Synchronous Serial Port

SSTL: Stub series terminated logic

Stage: One part of the sequence composing a control transfer; stages include the Setup stage, the Data stage, and

the Status stage.

Start-of-Frame (SOF): The first transaction in each (micro)frame. An SOF allows endpoints to identify the start of

the (micro)frame and synchronize internal endpoint clocks to the host.

Stream Pipe: A pipe that transfers data as a stream of samples with no defined USB structure

SWI: Software interrupt.

Synchronization Type: A classification that characterizes an isochronous endpoint’s capability to connect to other

isochronous endpoints.

Synchronous RA: The incoming data rate, Fsi, and the outgoing data rate, Fso, of the RA process are derived from

the same master clock. There is a fixed relation between Fsi and Fso.

Synchronous SRC: The incoming sample rate, Fsi, and outgoing sample rate, Fso, of the SRC process are derived

from the same master clock. There is a fixed relation between Fsi and Fso.

System Programming Interface (SPI): A defined interface to services provided by system software.

TC: Temperature Cycling

TDD: Time Division Duplexing The Mobile Station and the Base Station transmit on same frequency at different

times.

TDM: See Time Division Multiplexing.

TDMA: Time Division Multiple Access. TDMA protocol allows multiple users to access a single radio frequency

by allocating time slots for use to multiple voice or data calls. TDMA breaks down data transmissions, such as a

phone conversation, into fragments and transmits each fragment in a short burst, assigning each fragment a time

slot. With a cell phone, the caller would not detect this fragmentation. TDMA works with GSM and digital cellular

services.

TDR: See Time Domain Reflectometer.

Termination: Passive components attached at the end of cables to prevent signals from being reflected or echoed.

TFT: Thin Film Twist, a type of active LCD panel.

Three-state: a high-impedance state in which the output is floating and is electrically isolated from the buffer's

circuitry.

Time Division Multiplexing (TDM): A method of transmitting multiple signals (data, voice, and/or video)

simultaneously over one communications medium by interleaving a piece of each signal one after another.

Time Domain Reflectometer (TDR): An instrument capable of measuring impedance characteristics of the USB

signal lines.

PXA270 Datasheet(PDF) 122 Page - Intel Corporation