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VS1003 데이터시트(PDF) 21 Page - VLSI Solution Oy

부품명 VS1003
상세설명  VS1003 - MP3/WMA AUDIO CODEC
PDF  61 Pages
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제조업체  VLSI [VLSI Solution Oy]
홈페이지  https://www.vlsi.fi/
Logo VLSI - VLSI Solution Oy

VS1003 데이터시트(HTML) 21 Page - VLSI Solution Oy

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VS1003
7
SPI BUSES
7.7
SPI Examples with SM_SDINEW and SM_SDISHARED set
7.7.1
Two SCI Writes
0
1
2
3
30
31
1
0
1
0
0
0
0
0
0
0
X
X
XCS
SCK
SI
2
32
33
61
62
63
SCI Write 1
SCI Write 2
DREQ
DREQ up before finishing next SCI write
Figure 13: Two SCI Operations.
Figure 13 shows two consecutive SCI operations. Note that xCS must be raised to inactive
state between the writes. Also DREQ must be respected as shown in the figure.
7.7.2
Two SDI Bytes
1
2
3
XCS
SCK
SI
7
6
5
4
3
1
0
7
6
5
2
1
0
X
SDI Byte 1
SDI Byte 2
0
6
7
8
9
13
14
15
DREQ
Figure 14: Two SDI Bytes.
SDI data is synchronized with a raising edge of xCS as shown in Figure 14. However, every
byte doesn’t need separate synchronization.
Version: 1.09, 2018-03-16
21



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