Rainbow Electronics AT89C5132 - Manual (Page 147)

147
AT8xC5132
4173A–8051–08/02
Waveforms
Figure 123. SPI Slave Waveforms (SSCPHA = 0)
Note: Not Defined but generally the MSB of the character that has just been received.
Figure 124. SPI Slave Waveforms (SSCPHA = 1)
Note: Not Defined but generally the LSB of the character that 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)
SS#1
(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