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Page 158 Epson Research and Development
Vancouver Design Center
S1D13708 Hardware Functional Specification
X39A-A-001-02 Issue Date: 02/03/07
bit 0 BCLK Source Select
This bit selects the BCLK source between CLKI and XTAL (XTAL is recommended only
when configured for the Indirect Interface, see CNF[2:0]). When this bit is used the BCLK
source switches in a glitch free manner.
When this bit = 0, the BCLK source is CLKI.
When this bit = 1, the BCLK source is XTAL.
Note
There must be a CLKI source initially for this bit to operate.
Note
The BCLK source may be divided down using the BCLK Source to BCLK divide ratio
select (CNF[7:6]).
bit 0 Data Compare Invert Enable
This bit can be used to lower power consumption for TFT Type 2 and TFT Type 3 Inter-
faces. The Data Compare and Invert function reduces the amount of data toggled by count-
ing the number of bits that are changed (1 to 0 or 0 to 1) from the previous pixel data. For
all other panel interfaces it has no effect.
When this bit = 0, the Data Compare and Invert functions are disabled.
When this bit = 1, the Data Compare and Invert functions are enabled.
Data Compare Invert Enable Register
REG[CBh] Read/Write
n/a
Data
Compare
Invert Enable
7 6 5 4 3 2 10