Microchip Technology MA330012 데이터 시트
dsPIC33F
DS70165E-page 142
Preliminary
©
2007 Microchip Technology Inc.
REGISTER 7-3:
DMAxSTA: DMA CHANNEL x RAM START ADDRESS REGISTER A
(1)
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
STA<15:8>
bit 15
bit 8
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
STA<7:0>
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15-0
STA<15:0>: Primary DMA RAM Start Address bits (source or destination)
Note 1:
A read of this address register will return the current contents of the DMA RAM Address register, not the
contents written to STA<15:0>. If the channel is enabled (i.e., active), writes to this register may result in
unpredictable behavior of the DMA channel and should be avoided.
contents written to STA<15:0>. If the channel is enabled (i.e., active), writes to this register may result in
unpredictable behavior of the DMA channel and should be avoided.
REGISTER 7-4:
DMAxSTB: DMA CHANNEL x RAM START ADDRESS REGISTER B
(1)
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
STB<15:8>
bit 15
bit 8
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
STB<7:0>
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15-0
STB<15:0>: Secondary DMA RAM Start Address bits (source or destination)
Note 1:
A read of this address register will return the current contents of the DMA RAM Address register, not the
contents written to STB<15:0>. If the channel is enabled (i.e., active), writes to this register may result in
unpredictable behavior of the DMA channel and should be avoided.
contents written to STB<15:0>. If the channel is enabled (i.e., active), writes to this register may result in
unpredictable behavior of the DMA channel and should be avoided.