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| 型號： | M37735S4LHP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 16-BIT, MICROCONTROLLER, PQFP80 |
| 封裝： | FINE PITCH, PLASTIC, QFP-80 |
| 文件頁數(shù)： | 46/63頁 |
| 文件大小： | 8367K |
| 代理商： | M37735S4LHP |
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CENTRAL PROCESSING UNIT (CPU)
7733 Group User’s Manual
2–12
2.2.2 Functions of bus interface unit (BIU)
The bus interface unit (BIU) consists of four registers shown in Figure 2.2.2. Table 2.2.1 lists each register’s
function.
2.2 Bus interface unit
Table 2.2.1 Each register’s function
Fig. 2.2.2 Registers’ structure of which bus interface unit (BIU) consists
Name
Program address register
Instruction queue buffer
Data address register
Data buffer
Functions
Indicates a store address for an instruction which is next fetched into an instruction
queue buffer.
Temporarily stores an instruction which was fetched.
Indicates an address for data which is next read or written.
Temporarily stores data which was read from the memory I/O unit by the BIU
or which is to be written to the memory I/O unit by the CPU.
PA
b23
b0
Q0
b7
b0
Q1
Q2
DA
b23
b0
DBL
b0
DBH
b15
Program address register
Instruction queue buffer
Data address register
Data buffer
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相關(guān)代理商/技術(shù)參數(shù) |
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| M37735T-PAC | 制造商:Renesas Electronics Corporation 功能描述:DEV 7733 SIMPLE DEVELOPMENT TOOL PACKAGE - Bulk |
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