AT89C5132
23.3.3.3
Waveforms
Figure 23-12. SPI Slave Waveforms (SSCPHA = 0)
SS
(input)
TSLCH
TCLSH
TCHSH
TCHCH
TSHSL
TSLCL
TCLCH
SCK
(SSCPOL = 0)
(input)
TCHCX
TCLCX
TCHCL
SCK
(SSCPOL = 1)
(input)
TCLOX
TCHOX
TCLOV
TCHOV
TSLOV
SLAVE MSB OUT
TSHOX
MISO
(output)
BIT 6
SLAVE LSB OUT
1
TCHIX
TCLIX
TIVCH
TIVCL
MOSI
(input)
MSB IN
BIT 6
LSB IN
Note:
1. Not Defined but generally the MSB of the character which has just been received.
Figure 23-13. SPI Slave Waveforms (SSCPHA = 1)
SS1
(output)
TCHCH
TCLCH
SCK
(SSCPOL = 0)
(output)
TCHCX
TCLCX
TCHCL
SCK
(SSCPOL = 1)
(output)
TIVCH
TCHIX
TIVCL TCLIX
SI
(input)
MSB IN
BIT 6
TCLOV
TCHOV
LSB IN
TCLOX
TCHOX
SO
(output)
Port Data
MSB OUT
BIT 6
LSB OUT
Port Data
Note:
1. Not Defined but generally the LSB of the character which has just been received.
165
4173E–USB–09/07
ATMEL [ ATMEL ]
