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VS1103 Datasheet(PDF) 21 Page - VLSI Solution Oy

Part # VS1103
Description  VS1103b - MIDI/ADPCM AUDIO CODEC
PDF  61 Pages
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Manufacturer  VLSI [VLSI Solution Oy]
Direct Link  https://www.vlsi.fi/
Logo VLSI - VLSI Solution Oy

VS1103 Datasheet(HTML) 21 Page - VLSI Solution Oy

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VS1103b Datasheet
5
SPI BUSES
5.7
SPI Examples with SM_SDINEW and SM_SDISHARED set
5.7.1
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 9: Two SCI Operations.
Figure 9 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.
5.7.2
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 10: Two SDI Bytes.
SDI data is synchronized with a raising edge of xCS as shown in Figure 10. However, every
byte doesn’t need separate synchronization.
Version: 1.04, 2018-03-16
21



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