SPFD54124B Drise, SPFD54124B Datasheet - Page 203

• Manufacturer Part Number: SPFD54124B
• Description: 396-Channel 6-Bit Source Driver
• Manufacturer: Drise

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7.15.2. Functionality Detection
Sleep Out-command is a trigger for an internal function of the display module, which indicates, if the display module is still running and
meets functionality requirements.
The internal function (= the display controller) is comparing, if the display module is still meeting functionality requirements (only Booster
voltage level). If functionality requirement is met, there is inverted (= increased by 1) a bit in “Read Display Self- Diagnostic Result (0Fh)” (=
RDDSDR) (The used bit of this command is D6). If functionality requirement is not same, this bit (D6) is not inverted (= increased by 1).
The flow chart for this internal function is following:
Note: There is needed 120msec after Sleep Out -command, when there is changing from Sleep In –mode to Sleep Out -mode, before there
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is possible to check if functionality requirements are met and a value of RDDSDR’s D6 is valid. Otherwise, there is 5msec delay for
D6’s value, when Sleep Out –command is sent in Sleep Out -mode.
No
Sleep Out Mode
Checks Booster voltage levels
and other functionalities
Sleep Out (11h)
requirement met ?
Sleep In (10h)
D6 inverted
Is functionality
Yes
203
Sleep In Mode
SPFD54124B
Power on sequence
RDDSDR’s D6=0
Preliminary
Preliminary Version: 0.6
HW reset
SW reset
APR. 26, 2007