s3c2410a Samsung Semiconductor, Inc., s3c2410a Datasheet - Page 478

• Manufacturer Part Number: s3c2410a
• Description: 16/32-bit Risc Arm Microprocessor
• Manufacturer: Samsung Semiconductor, Inc.

SPI INTERFACE
SPI Transfer Format
The S3C2410A supports 4 different format to transfer the data. Figure 22-2 shows four waveforms for SPICLK..
22-4
Cycle
SPICLK
MOSI
MISO
Cycle
SPICLK
MOSI
MISO
Cycle
SPICLK
MOSI
MISO
Cycle
SPICLK
MOSI
MISO
*LSB
*LSB
MSB
MSB
MSB
MSB
MSB
MSB
MSB
MSB
Figure 22-2. SPI Transfer Format
1
1
1
1
* LSB of previously transmitted character
* LSB of previously transmitted character
* MSB of character just received
* MSB of character just received
CPOL = 0, CPHA = 0 (Format A)
CPOL = 0, CPHA = 1 (Format B)
CPOL = 1, CPHA = 0 (Format A)
CPOL = 1, CPHA = 1 (Format B)
2
6
6
2
6
6
2
6
6
2
6
6
3
5
5
3
5
5
3
5
5
3
5
5
4
4
4
4
4
4
4
4
4
4
4
4
5
3
3
5
3
3
5
3
3
5
3
3
6
2
2
6
2
2
6
2
2
6
2
2
7
1
1
7
1
1
7
1
1
7
1
1
LSB
LSB
LSB
LSB
LSB
LSB
8
8
8
8
LSB
LSB*
MSB*
MSB*
S3C2410A