參數(shù)資料
型號(hào): μPD30100
廠商: NEC Corp.
英文描述: 64-bit RISC Microprosessor(64位 RISC 微處理器)
中文描述: 64位RISC Microprosessor(64位的RISC微處理器)
文件頁(yè)數(shù): 18/52頁(yè)
文件大小: 365K
代理商: ΜPD30100
18
μ
PD30100
3.6 Data Format and Addressing
The V
R
4100 uses the following four types of data formats.
Double word (64 bits)
Word (32 bits)
Half-word (16 bits)
Byte (8 bits)
When the data format is double-word, word, or half-word, the alignment of bytes can be set to either big
endian or little endian with the configuration register BE bit.
Figure 3-7. Byte Address in Word: Big Endian
Higher
address
Word
address
12
Lower
address
31
24 23
16 15
8
7
0
8
4
0
0
4
8
12
1
5
9
13
2
6
10
14
3
7
11
15
Remarks 1.
The most significant byte is at the lowest address.
2.
The word is addressed at the highest address.
Figure 3-8. Byte Address in Word: Little Endian
Higher
address
Word
address
12
Lower
address
31
24 23
16 15
8
7
0
8
4
0
3
7
11
15
2
6
10
14
1
5
9
13
0
4
8
12
Remarks 1.
The least significant byte is at the lowest address.
2.
The word is addressed at the lowest address.
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