Software Adjustable Lcd Backlight Intensity Support Using Pwm; Passive/Active Lcd Panel Support; Buffered Lcd Connector; Extended Lcd Connector - Epson S5U13706B00C User Manual

Technical Description

6.6 Software Adjustable LCD Backlight Intensity Support Using PWM

6.7 Passive/Active LCD Panel Support

6.7.1 Buffered LCD Connector

6.7.2 Extended LCD Connector

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The S1D13706 provides Pulse Width Modulation output on PWMOUT. PWMOUT can be
used to control LCD panels which support PWM control of the backlight inverter. The
PWMOUT signal is provided on the buffered LCD connector (H1).
The S1D13706 directly supports:
• 4/8-bit, single monochrome passive panels.
• 4/8/16-bit single color passive panels.
• 9/12/18-bit TFT active matrix panels.
• 18-bit Sharp HR-TFT panels.
• 18-bit Epson D-TFD panels.
All the necessary signals are provided on the 40-pin LCD connector H1. For connection
information, refer to Table 5-1: "LCD Signal Connector (H1)" on page 16.
The buffered LCD connector (H1) provides the same LCD panel signals as those directly
from S1D13706, but with voltage-adapting buffers selectable to 3.3V or 5.0V. Pin 32 on
this connector provides a voltage level of 3.3V or 5.0V to the LCD panel logic (see "JP6 -
LCD Panel Voltage" on page 12 for information on setting the panel voltage).
The S1D13706 directly supports Sharp 18-bit HR-TFT and Epson 18-bit D-TFD panels.
The extended LCD connector (H3) provides the extra signals required to support these
panels. The signals on this connector are also buffered from the S1D13706 and adjustable
to 3.3V or 5.0V (see "JP6 - LCD Panel Voltage" on page 12 for details on setting the panel
voltage).
Seiko Epson Corporation
S5U13706B00C Rev. 1.0 Evaluation Board
Rev. 5.1