Datasheet-2

a-Si TFT LCD Single Chip Driver
132RGBx162 Resolution and 262K color
ILI9163C
Page 27 of 200 Version:0.09
6.3.2 Read Cycle/Sequence
The read cycle (RDX high-low-high sequence) means that the host reads information from the display via
interface. The display sends data (D[17…0]) to the host when there is a falling edge of RDX and the host reads
data when there is a rising edge of RDX.
RDX
D[7:0], D[8:0] or
D[15:0], D[17:0]
The display asserts
D[17:0], D[15:0], D[8:0] or
D[7:0] lines when there is
a falling edge of RDX.
The host reads D[17:0],
D[15:0], D[8:0] or D[7:0]
lines when there is a
rising edge of RDX.
The display negates
D[17:0], D[15:0], D[8:0]
or D[7:0] lines
Note: RDX is an unsynchronized signal (It can be stopped).
Figure11: 8080-Series RDX Protocol
CMD DM PA 1 CMD
CMD DM PA CMD
CMD CMD
CSX
D/CX
RDX
WRX
D[17:0]
Host D[17:0]
(MPU to LCD)
Read command Read display RAM data
Signals on D[17:0], D/CX, RDX and WRX
pins during CSX= H are ignore
CMD: Write command code
PA: Write parameter or RAM data
DM Data
Data P
DM
PA PA
Hi-Z
Hi-Z
Driver D[17:0]
(LCD to MPU)
DM
Hi-Z
PA
DM
Hi-Z
PA PA
Figure12: 8080-Series parallel bus protocol (Read from register or display RAM)