
5 REGISTERS
C-1-18
EPSON
SID13705 HARDWARE FUNCTIONAL
SPECIFICATION
bits 7-4
LUT Data Bits [3:0]
This register is used to read/write the RGB Look-Up Tables. This register accesses the
entry at the pointer controlled by the Look-Up Table Address Register (REG[15h]).
Accesses to the Look-Up Table Data Register automatically increment the pointer.
Note: The RGB data is inserted into the LUT after the Blue data is written, i.e. all three
colors must be written before the LUT is updated.
bits 4-0
GPIO[4:0] Pin IO Configuration
These bits determine the direction of the GPIO[4:0] pins.
When the GPIOn Pin IO Configuration bit = 0, the corresponding GPIOn pin is config-
ured as an input. The input can be read at the GPIOn Status/Control Register bit. See
“REG[19h] GPIO Status/Control Register”.
When the GPIOn Pin IO Configuration bit = 1, the corresponding GPIOn pin is config-
ured as an output. The output can be controlled by writing the GPIOn Status/Control
Register bit.
Note: These bits have no effect when the GPIOn pin is configured for a specific function
(i.e. as FPDAT[11:8] for TFT/D-TFD operation).
bits 4-0
GPIO[4:0] Status
When the GPIOn pin is configured as an input, the corresponding GPIO Status bit is
used to read the pin input. See REG[18h] above.
When the GPIOn pin is configured as an output, the corresponding GPIO Status bit is
used to control the pin output.
bits 7-0
Scratch Pad Register
This register contains general use read/write bits. These bits have no effect on hardware.
REG[17h] Look-Up Table Data Register
Address = 0x039FFF7
Read/Write
LUT Data
Bit 3
LUT Data
Bit 2
LUT Data
Bit 1
LUT Data
Bit 0
n/an/a
REG[18h] GPIO Configuration Control Register
Address = 0x039FFF8
Read/Write
n/a
GPIO4 Pin IO
Configuration
GPIO3 Pin IO
Configuration
GPIO2 Pin IO
Configuration
GPIO1 Pin IO
Configuration
GPIO0 Pin IO
Configuration
REG[19h] GPIO Status/Control Register
Address = 0x039FFF9
Read/Write
n/a
GPIO4 Pin IO
Status
GPIO3 Pin IO
Status
GPIO2 Pin IO
Status
GPIO1 Pin IO
Status
GPIO0 Pin IO
Status
REG[1Ah] Scratch Pad Register
Address = 0x039FFFA
Read/Write
Scratch bit 7
Scratch bit 6
Scratch bit 5
Scratch bit 4
Scratch bit 3
Scratch bit 2
Scratch bit 1
Scratch bit 0