Intel NETWORK PROCESSOR IXP2800 - Manual (Page 26)

26 Hardware Reference Manual
Intel
®
IXP2800 Network Processor
Introduction
1.3 Terminology
Table 1 and Table 2 list the terminology used in this manual.
Table 1. Data Terminology
Term Words Bytes Bits
Byte ½ 1 8
Word 1 2 16
Longword 2 4 32
Quadword 4 8 64
Table 2. Longword Formats
Endian Type 32-Bit 64-Bit
Little-Endian (0x12345678) arranged as {12 34 56 78}
64-bit data 0x12345678 9ABCDE56
arranged as {12 34 56 78 9A BC DE 56}
Big-Endian (0x12345678) arranged as {78 56 34 12}
64-bit data 0x12345678 9ABCDE56
arranged as {78 56 34 12, 56 DE BC 9A}