RS_Color liquid crystal display controller (CLCD)
RM0082
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Doc ID 018672 Rev 1
33.3 Signal
interfaces
The CLCD directly interfaces with the signals summarized in
.
Table 662.
CLCD signal interface
33.4
LCD panel signal multiplexing details
The
CLLP
,
CLAC
,
CLFP
,
CLCP
and
CLLE
signals are common but the CLD[23:0] bus has
eight modes of operation corresponding to:
●
TFT 24 bit interface
●
TFT 18 bit interface
●
color STN single panel
●
color STN Dual panel
●
4 bit mono STN single panel
●
4 bit mono STN dual panel
●
8 bit mono STN single panel
●
8 bit mono STN dual panel.
Note:
1
CUSTN = Color upper panel STN, dual and/or single panel
2
CLSTN = Color lower panel STN, single
3
MUSTN = Mono upper panel STN, dual and/or single panel
4
MLSTN = Mono lower panel STN, single.
shows which
CLD[23:0]
pins are used to supply the pixel data to the STN panel
for each of the above modes of operation.
Group
Signal name
Direction
Size
(bit)
Description
External
(to chip pads)
CLAC
Output
1
STN AC bias drive or TFT data enable
output
CLCP
Output
1
LCD panel clock
CLD[23:0]
Output
24
LCD panel data
CLFP
Output
1
Frame pulse (STN)/vertical synchronization
pulse (TFT)
CLLE
Output
1
Line end signal
CLLP
Output
1
Line synchronization pulse (STN)/horizontal
synchronization pulse (TFT)
CLPOWER
Output
1
LCD panel power enable
Control signal
CLCD_INTR
Output
1
Combined OR version CLCD interrupt
requests, to interrupt controller.
AHB slave
-
Input/Output -
See AMBA specification.
AHB master
-
Input/Output -
See AMBA specification.