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VR4102 Datasheet(PDF) 363 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) 363 Page - NEC

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CHAPTER 18 GIU (GENERAL PURPOSE I/O UNIT)
363
18.2.1 GIUIOSELL (0x0B00 0100)
Bit
D15
D14
D13
D12
D11
D10
D9
D8
Name
IOS[15]
IOS[14]
IOS[13]
IOS[12]
IOS[11]
IOS[10]
IOS[9]
IOS[8]
R/W
R
R/W
R/W
R/W
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
D7
D6D5
D4D3D2
D1
D0
Name
IOS[7]
IOS[6]
IOS[5]
IOS[4]
IOS[3]
IOS[2]
IOS[1]
IOS[0]
R/W
R/W
R/W
R/W
R/W
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..0]
IOS[15..0]
GPIO pin input/output select
1 : Output
0 : Input
This register is used to set input/output values for GPIO[15..0] pins.
When the IOS bit is set to “1”, the corresponding GPIO pin is set for output and the value that has been written to
the corresponding PIOD bit in the GIUPIODL (GPIO Port Input/Output Data Register) is output.
When this bit is set to “0”, the corresponding GPIO pin is set for input.
Caution
Since IOS[15] (GPIO[15] (DCD#)) is fixed as input, it cannot be set for output.



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