參數(shù)資料
型號(hào): μPD30181
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): 22/68頁(yè)
文件大?。?/td> 270K
代理商: ΜPD30181
22
μ
PD30700,30700L,30710
2.4 Data Format and Addressing
The V
R
10000 has the following four types of data formats:
Double word (64 bits)
Word (32 bit)
Half word (16 bits)
Byte (8 bits)
If the data format is double word, word, or half word, the byte order can be set to bit endian or little endian by using
the BE bit of the config register.
Figure 2-4. Byte Address in Word: Big Endian
Remarks 1.
The most significant byte is the least significant address.
A word is addressed by the address of the most significant byte.
2.
Figure 2-5. Byte Address in Word: Little Endian
Remarks 1.
The least significant byte is the least significant address.
A word is addressed by the address of the least significant byte.
2.
31
24 23
16 15
8 7
0
High-order
address
Low-order
address
12
13
14
15
8
9
10
11
4
5
6
7
0
1
2
3
Word
address
12
8
4
0
31
24 23
16 15
8 7
0
High-order
address
Low-order
address
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Word
address
12
8
4
0
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