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MPT57571B Datasheet(PDF) 5 Page - List of Unclassifed Manufacturers

Part No. MPT57571B
Description  384-CHANNEL 256-GRADATION SOURCE DRIVER FOR COLOR TFT LCDS
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MPT57571B Datasheet(HTML) 5 Page - List of Unclassifed Manufacturers

 
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MPT57571B
384-CHANNEL 256-GRADATION SOURCE DRIVER FOR COLOR TFT LCDS
SGLS110A – FEBRUARY 2000 – REVISED AUGUST 2000
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
detailed description
image signal capture
EIOn = H (n = 1 or n = 2) is captured internally at the leading edge of CLK. After the decay of EIOn, the image
signal data are captured in the internal latch with the rise of the next CLK.
After all data (that is, 384 channels of data) have been captured, the device automatically switches to the
standby state. New data are not captured until EIOn receives another input, even if there is a CLK input. If EIOn
receives an input in the meantime, new image signal data is captured at the rise of the next CLK after EIOn
decays.
It is possible to reverse the input data for each port by means of the REV1 and REV2 signals.
output expansion
The number of image signal output terminals can be expanded by cascading these devices, thereby enabling
compatibility with large screens. Expansion is controlled by using the L/R terminal:
L/R = L: the previous-stage EIO1 terminal is connected to the next-stage EIO2, and input terminals other than
EIO1 and EIO2 are connected together on each device.
L/R = H: the previous-stage EIO2 terminal is connected to the next-stage EIO1, and input terminals other than
EIO1 and EIO2 are connected together on each device.
relationship between input data values and output voltage
The output voltage is determined by the input data value and the 16 gamma-correction potentials (GMA[1-16]).
Also, since the output voltage is compatible with dot-reverse driving, it is possible to output gradation voltages
for the opposing-electrode voltages with polarities that differ for even and odd-numbered outputs.
Input potentials with the same polarity relative to the opposing-electrode voltages should be applied for GMA1-8
and GMA9-16 of the gamma-correction reference power supply.
Reference potential inputs for correction (GMA[1-16]) should be applied externally as desired. Reference
potential should be maintained during gradation voltage output. Refer to the recommended operating conditions
for the relative magnitude of each potential. An 8+8 or 7+7 correction reference potential input is selectable as
a TCP option. When a 7+7 correction reference is used, processing is performed internally to the TCP without
GMA6 and GMA11. In this case, the relation between the GMAs and the input data is used as an output after
dividing input data CO through FE by the IC’s internal resistance.
Details of Pixel Signal Data:
Data format: 8-bits x 2 RGB
Input width: 48 bits (2-pixel data)
MSB
LSB
Dx7
Dx6
Dx5
Dx4
Dx3
Dx2
Dx1
Dx0


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