
i.MX35 Applications Processors for Automotive Products, Rev. 10
Freescale Semiconductor
89
Figure 62. 3-Wire Serial Interface Timing Diagram
Figure 63 depicts timing of the 4-wire serial interface. For this interface, there are separate input and output
data lines both inside and outside the device.
Figure 63. 4-Wire Serial Interface Timing Diagram
Preamble
DISPB_D#_CS
DISPB_SD_D_CLK
DISPB_SD_D
RW
RS
Input or output data
D7
D6
D5
D4
D3
D2
D1
D0
1 display IF
clock cycle
1 display IF
clock cycle
Preamble
DISPB_D#_CS
DISPB_SD_D_CLK
DISPB_SD_D
RW
RS
Output data
D7
D6
D5
D4
D3
D2
D1
D0
DISPB_SD_D
(Output)
(Input)
Preamble
DISPB_D#_CS
DISPB_SD_D_CLK
DISPB_SD_D
RW
RS
Input data
DISPB_SD_D
D7
D6
D5
D4
D3
D2
D1
D0
(Output)
(Input)
Write
Read
1 display IF
clock cycle
1 display IF
clock cycle
1 display IF
clock cycle
1 display IF
clock cycle