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Chapter 27
Glossary
AD-TFT
Advanced Thin-Film Transistor Liquid Crystal Display. Capable of using either transmitted
light or reflected light to form a display.
AHB
Advanced High-performance Bus. Defined in the AMBA specification, the AHB connects
the high-performance blocks within the SoC.
AMBA
Advanced Microprocessor Bus Architecture. This architecture is an open standard for a
high-speed on-chip bus connecting the blocks of an SoC.
APB
Advanced Peripheral Bus. Defined in the AMBA specification, the APB connects the low
power, lower-bandwidth peripheral blocks within the SoC.
APB Bridge
Interface between the AHB and APB. The APB Bridge converts data into a suitable format
for the slave devices on the APB. It is a slave on the AHB and the only bus master on
the APB.
ARM7TDMI-S Core
Synthesizeable version of the ARM7TDMI Central Processing Unit, belonging to the ARM7
family of processors. For more information, see the ARM Ltd. website: www.arm.com.
Big-endian
The most significant byte or half-word of the data is stored at the lowest storage address
or transmitted or received first.
Block
In Flash Memory terminology, a Block (or sector) is a logical group of memory cells that
need to be erased together. Blocks are usually 64KB in size, but other sizes exist (8KB
boot blocks for example).
BPP
Bits-Per-Pixel.
Byte
An 8-bit data element. Bytes in this User's Guide are shown with the most significant bit
on the left (or top) and the least significant bit on the right (or bottom). Also see Half Word
and Word.
7/15/03
27-1
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