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VR4102 Datasheet(PDF) 357 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) 357 Page - NEC

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CHAPTER 17 DSU (DEADMAN’S SWITCH UNIT)
357
17.2.2 DSUSETREG (0x0B00 00E2)
Bit
D15
D14
D13
D12
D11
D10
D9
D8
Name
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
R/W
R
RR
RRR
R
R
RTCRST
0
0
0
0
0
0
0
0
Other resets
0
0
0
0
0
0
0
0
Bit
D7
D6D5
D4D3D2
D1
D0
Name
Reserved
Reserved
Reserved
Reserved
DEDTIME[3] DEDTIME[2] DEDTIME[1] DEDTIME[0]
R/W
R
R
R
R
R/W
R/W
R/W
R/W
RTCRST
0
0
0
0
0
0
0
0
Other resets
0
0
0
0
0
0
0
0
Bit
Name
Function
D[15..4]
Reserved
Write 0 when writing. 0 is returned after a read.
D[3..0]
DEDTIME[3..0]
Deadman’s Switch cycle setting
1111
15 sec
1110
14 sec
:
0010
2 sec
0001
1 sec
0000
RFU
This register sets the cycle for Deadman’s Switch functions.
The Deadman’s Switch cycle can be set in 1-second increments in a range from 1 to 15 seconds. However, the
VR4102’s operation is undefined when 0x0 has been set to DEDTIME[3..0]. The DSUCLRREG’s DSWCLR bit must
be set by software within the specified cycle time.



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