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VR4102 Datasheet(PDF) 286 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) 286 Page - NEC

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CHAPTER 12 DCU (DMA CONTROL UNIT)
286
12.3.5 DMAREQREG (0x0B00 0048)
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
DRQAIN
DRQAOUT
Reserved
DRQFOUT
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
Name
Function
D[15..4]
Reserved
Write 0 when writing. 0 is returned after a read.
D[3]
DRQAIN
Audio input DMA transfer request
1 : Request pending
0 : No request
D[2]
DRQAOUT
Audio output DMA transfer request
1 : Request pending
0 : No request
D[1]
Reserved
Write 0 when writing. 0 is returned after a read.
D[0]
DRQFOUT
FIR transmission DMA transfer request
1 : Request pending
0 : No request
This register is used to indicate whether or not there are any DMA transfer requests.



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