3 waveforms, Figure 6-13. spi slave waveforms (sscpha = 1) – Atmel AT89C5132 User Manual
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4173ES–USB–09/07
AT89C5132
6.3.3.3
Waveforms
Figure 6-12. SPI Slave Waveforms (SSCPHA = 0)
Note:
1. Not Defined but generally the MSB of the character which has just been received.
Figure 6-13. SPI Slave Waveforms (SSCPHA = 1)
Note:
1. Not Defined but generally the LSB of the character which has just been received.
T
SLCL
T
SLCH
T
CHCL
T
CLCH
MOSI
(input)
SCK
(SSCPOL = 0)
(input)
SS
(input)
SCK
(SSCPOL = 1)
(input)
MISO
(output)
T
CHCH
T
CLCX
T
CHCX
T
IVCL
T
CLIX
T
CHIX
T
IVCH
T
CHOV
T
CLOV
T
CHOX
T
CLOX
MSB IN
BIT 6
LSB IN
SLAVE MSB OUT
SLAVE LSB OUT
BIT 6
T
SLOV
1
T
SHOX
T
SHSL
T
CHSH
T
CLSH
SI
(input)
SCK
(SSCPOL = 0)
(output)
SS1
(output)
SCK
(SSCPOL = 1)
(output)
SO
(output)
T
CHCH
T
CLCX
T
CHCX
T
IVCL
T
CLIX
T
CHIX
T
IVCH
T
CHOV
T
CLOV
T
CHOX
T
CLOX
MSB IN
BIT 6
LSB IN
MSB OUT
Port Data
LSB OUT
Port Data
BIT 6
T
CHCL
T
CLCH