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S5PC110_UM
3.2.1.8 SPI Transfer Format
The S5PC110 supports four different formats for data transfer.
Cycle
SPICLK
MOSI
MISO
Cycle
SPICLK
MOSI
MISO
Cycle
SPICLK
MOSI
MISO
Cycle
SPICLK
MOSI
MISO
CPOL = 0, CPHA = 0 (Format A)
1
2
3
MSB
6
5
MSB
6
5
*MSB : MSB of previous frame
CPOL = 0, CPHA = 1 (Format B)
1
2
3
MSB
6
5
LSB*
MSB
6
5
LSB* : LSB of next frame
CPOL = 1, CPHA = 0 (Format A)
1
2
3
MSB
6
5
MSB
6
5
*MSB : MSB of previous frame
CPOL = 1, CPHA = 1 (Format B)
1
2
3
MSB
6
5
LSB*
MSB
6
5
LSB* : LSB of next frame
Figure 3-1
describes four waveforms for SPICLK.
Figure 3-1
4
5
6
7
4
3
2
1
4
3
2
1
4
5
6
7
4
3
2
1
4
3
2
1
4
5
6
7
4
3
2
1
4
3
2
1
4
5
6
7
4
3
2
1
4
3
2
1
SPI Transfer Format
3 SERIAL PERIPHERAL INTERFACE
8
LSB
LSB
*MSB
8
LSB
LSB
8
LSB
LSB
*MSB
8
LSB
LSB
3-4
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