At8xc51snd1c, Figure 148. spi master waveforms (sscpha= 0), Figure 149. spi master waveforms (sscpha= 1) – Rainbow Electronics AT89C51SND1C User Manual
Page 193
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193
AT8xC51SND1C
4109E–8051–06/03
Figure 148. SPI Master Waveforms (SSCPHA= 0)
Note:
1.
SS
handled by software using general purpose port pin.
Figure 149. SPI Master Waveforms (SSCPHA= 1)
Note:
1.
SS
handled by software using general purpose port pin.
MOSI
(input)
SCK
(SSCPOL= 0)
(output)
SS
(output)
SCK
(SSCPOL= 1)
(output)
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
MSB OUT
Port Data
LSB OUT
Port Data
BIT 6
T
CHCL
T
CLCH
MOSI
(input)
SCK
(SSCPOL= 0)
(output)
SS
(1)
(output)
SCK
(SSCPOL= 1)
(output)
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
MSB OUT
Port Data
LSB OUT
Port Data
BIT 6
T
CHCL
T
CLCH
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