HD6417320 RENESAS [Renesas Technology Corp], HD6417320 Datasheet - Page 951

• Manufacturer Part Number: HD6417320
• Description: Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

26.3.17 LCDC Power Management Mode Register (LDPMMR)
LDPMMR controls the power supply circuit that provides power to the LCD module. The usage
of two types of power-supply control pins, LCD_VCPWC and LCD_VEPWC, and turning on or
off the power supply function are selected.
Bit
15
14
13
12
11
10
9
8
7
6
Bit Name
ONC3
ONC2
ONC1
ONC0
OFFD3
OFFD2
OFFD1
OFFD0

VCPE
Initial Value
0
0
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R
R/W
0: Disabled: LCD_VCPWC pin is masked and fixed
Description
LCDC Power-On Sequence Period
Set the period from LCD_VEPWC assertion to
LCD_DON assertion in the power-on sequence of
the LCD module in frame units.
Specify to the value of (the period) -1.
This period is the (c) period in figures 26.4 to 26.7,
Power-Supply Control Sequence and States of the
LCD Module. For details on setting this register,
see table 26.5, Available Power-Supply Control-
Sequence Periods at Typical Frame Rates. (The
setting method is common for ONA, ONB, OFFD,
OFFE, and OFFF.)
LCDC Power-Off Sequence Period
Set the period from LCD_DON negation to
LCD_VEPWC negation in the power-off sequence
of the LCD module in frame units.
Specify to the value of (the period) -1.
This period is the (d) period in figures 26.4 to 26.7,
Power-Supply Control Sequence and States of the
LCD Module.
Reserved
This bit is always read as 0. The write value should
always be 0.
LCD_VCPWC Pin Enable
Sets whether or not to enable a power-supply
control sequence using the LCD_VCPWC pin.
1: Enabled: LCD_VCPWC pin output is asserted
low
and negated according to the power-on or
power-off sequence
Rev. 3.00 Jan. 18, 2008 Page 889 of 1458
Section 26
LCD Controller (LCDC)
REJ09B0033-0300