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VR4102 Datasheet(PDF) 643 Page - NEC

Part # VR4102
Description  64/32-bit Microprocessor
PDF  701 Pages
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

VR4102 Datasheet(HTML) 643 Page - NEC

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CHAPTER 27 CPU INSTRUCTION SET DETAILS
643
STANDBY
Standby
STANDBY
0
0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
COP0
0 1 0 0 0 0
STANDBY
1 0 0 0 0 1
31
26 25
6 5
0
619
6
CO
1
1
24
Format:
STANDBY
Description:
STANDBY instruction starts mode transition from Fullspeed mode to Standby mode.
When the STANDBY instruction finishes the WB stage, the VR4102 wait by the SysAD bus is idle state, after then
the internal clocks will shut down, thus freezing the pipeline. The PLL, Timer/Interrupt clocks and the internal bus
clocks (TClock and MasterOut) will continue to run.
Once the VR4102 is in Standby mode, any interrupt, including the internally generated timer interrupt, NMI, Soft
Reset, and Cold Reset will cause the VR4102 to exit Standby mode and to enter Fullspeed mode.
Operation:
32, 64 T:
T+1: Standby operation ()
Exceptions:
Coprocessor unusable exception
Remark
Refer to Chapter 15 for details about the operation of the peripheral units at mode transition.



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