Figure 160. SPI Master Waveforms (SSCPHA= 0)
SS
(output)
TCHCH
TCLCH
SCK
(SSCPOL= 0)
(output)
TCHCX
TCLCX
TCHCL
SCK
(SSCPOL= 1)
(output)
TIVCH
TCHIX
TIVCL TCLIX
MOSI
(input)
MSB IN
BIT 6
TCLOV
TCHOV
LSB IN
TCLOX
TCHOX
MISO
(output)
Port Data
MSB OUT
BIT 6
LSB OUT
Port Data
Note:
1. SS handled by software using general purpose port pin.
Figure 161. SPI Master Waveforms (SSCPHA= 1)
SS(1)
(output)
TCHCH
TCLCH
SCK
(SSCPOL= 0)
(output)
TCHCX
TCLCX
TCHCL
SCK
(SSCPOL= 1)
(output)
TIVCH
TCHIX
TIVCL TCLIX
MOSI
(input)
MSB IN
TCLOV
BIT 6
LSB IN
TCLOX
TCHOX
TCHOV
MISO
(output)
Port Data
MSB OUT
BIT 6
LSB OUT
Port Data
Note:
1. SS handled by software using general purpose port pin.
222
AT8xC51SND2C
4341D–MP3–04/05
ATMEL [ ATMEL ]
