Data Sheet

a-Si TFT LCD Single Chip Driver
240RGBx320 Resolution and 262K color
ILI9341
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Page 145 of 233
8.2.41. Read CTRL Display (54h)
54h RDCTRLD (Read Control Display)
D/CX RDX WRX D17-8 D7 D6 D5 D4 D3 D2 D1 D0 HEX
Command 0 1 ↑ XX 0 1 0 1 0 1 0 0 54h
1
st
Parameter 1 ↑ 1 XX X X X X X X X X XX
2
nd
Parameter 1 ↑ 1 XX 0 0 BCTRL 0 DD BL 0 0 00
Description
This command is used to return brightness setting.
BCTRL : Brightness Control Block On/Off,
‘0’ = Off (Brightness registers are 00h)
‘1’ = On (Brightness registers are active, according to the DBV[7..0] parameters.)
DD : Display Dimming
‘0’ = Display Dimming is off
‘1’ = Display Dimming is on
BL : Backlight On/Off
‘0’ = Off (Completely turn off backlight circuit. Control lines must be low. )
‘1’ = On
Restriction
The display module is sending 2nd parameter value on the data lines if the MCU wants to read more than one parameter
(= more than 2 RDX cycle) on DBI.
Only 2nd parameter is sent on DSI (The 1st parameter is not sent).
Register
Availability
Status Availability
Normal Mode On, Idle Mode Off, Sleep Out Yes
Normal Mode On, Idle Mode On, Sleep Out Yes
Partial Mode On, Idle Mode Off, Sleep Out Yes
Partial Mode On, Idle Mode On, Sleep Out Yes
Sleep In Yes
Default
Default Value
Status
BCTRL DD BL
Power On Sequence 1’b0 1’b0 1’b0
SW Reset 1’b0 1’b0 1’b0
HW Reset 1’b0 1’b0 1’b0