Toshiba H1 Series - Manual (Page 554)

TMP92CZ26A
92CZ26A-551
7. LDIV Signal
The <LDINV> and <AUTOINV> bits of the LCDMODE1 register are used to control
the LDIV signal as well as data output. The LDIV signal indicates the inversion of all
the LD bus signals.
When LCDMODE1<LDINV>=1, all display data is forcefully inverted and the LDIV
signal is also driven high. When LCDMODE1<AUTOINV>=1, the data that has just
been transferred and the data to be transferred next are compared. If there are more
changed bits than unchanged bits (for example, 7 or more bits are changed when using
a 12-bit bus, and 5 or more bits are changed when using a 8-bit bus), the data is
inverted and the LDIV signal is also driven high. This function can be used with TFT
source drivers having the data inversion function to reduce radiated noise and power
consumption due to high-speed data inversion.
If <LDINV> and <AUTOINV> are both set to “1” at the same time, <LDINV> is given
priority and <AUTOINV> is disabled.