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)： 10/52頁(yè)
文件大?。?/td> 365K
代理商： ΜPD30100
10
μ
PD30100
3. INTERNAL ARCHITECTURE
3.1 Power Modes
The V
R
4100 supports three types of power modes, in addition to Fullspeed mode, to reduce the power
dissipation:
Fullspeed mode : Normal operation mode. All the clocks operate.
Standby mode
: The internal clocks except that related to the timer/interrupt are stopped.
Suspend mode
: The internal clocks except that related to the timer/interrupt, and TClock are stopped.
Hibernate mode : All the clocks generated by the processor are stopped.
To change the mode from Fullspeed, a dedicated instruction is used. To change the mode from Standby or
Suspend to Fullspeed, generate a hardware interrupt, timer interrupt, or NMI; or execute a software reset or cold
reset. To change from Hibernate to Fullspeed, execute a cold reset.
The mode cannot be directly changed from the Standby, Suspend, and Hibernate modes to a mode other than
Fullspeed. Be sure to change the mode from these three modes to Fullspeed, and then change from Fullspeed
to the desired operation mode.
Figure 3-1 and Table 3-1 show how the modes are changed.
Figure 3-2 shows the clock status in the Suspend mode and the sequence of mode transition as an example
of the power mode.
Figure 3-1. Power Mode Status Transitions
Standby mode
STANDBY instruction (1)
(2)
Hardware interrupt,
timer interrupt, NMI,
software reset, cold reset
Fullspeed mode
(4)
Hardware interrupt, timer
interrupt, NMI, software reset,
cold reset
Cold reset (6)
(5) HIBERNATE instruction
Hibernate mode
(3) SUSPEND instruction
Suspend mode
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