S1D13704 Epson Electronics America, Inc., S1D13704 Datasheet - Page 74

• Manufacturer Part Number: S1D13704
• Description: LCD Controller
• Manufacturer: Epson Electronics America, Inc.

Page 68
bits 3-0
bits 4-0
bits 4-0
S1D13704
X26A-A-001-06
REG[17h] Look-Up Table Data Register
Address = FFF7h
REG[18h] GPIO Configuration Control Register
Address = FFF8h
REG[19h] GPIO Status/Control Register
Address = FFF9h
n/a
n/a
n/a
n/a
n/a
n/a
Note
Look-Up Table Data Bits [3:0]
This register is used to read/write the RGB Look-Up Tables. This register is an aperture
into the three 16-position Look-Up Tables. The Look-Up Table Address Register
(REG[16h]) selects which Look-Up Table position is accessible. See REG[16h] Look-Up
Table Bank Select Register on page 67.
GPIO[4:0] Pin IO Configuration
These bits determine the direction of the GPIO[4:0] pins.
When GPIOn Pin IO Configuration bit = 0, the corresponding GPIOn pin is configured as
an input. The input can be read at the GPIOn Status/Control Register bit. See REG[19h]
below.
When GPIOn Pin IO Configuration bit = 1, the corresponding GPIOn pin is configured as
an output. The output can be controlled by writing the GPIOn Status/Control Register bit.
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.
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). All unused GPIO pins must be tied to
IO V
DD
n/a
n/a
n/a
.
GPIO4 Pin IO
GPIO4 Pin IO
Configuration
Status
n/a
GPIO3 Pin IO
GPIO3 Pin IO
Configuration
Table Data
Look-Up
Status
Bit 3
GPIO2 Pin IO
GPIO2 Pin IO
Configuration
Table Data
Look-Up
Status
Bit 2
Epson Research and Development
Hardware Functional Specification
GPIO1 Pin IO
GPIO1 Pin IO
Configuration
Table Data
Look-Up
Status
Bit 1
Vancouver Design Center
Issue Date: 02/02/01
Read/Write
Read/Write
GPIO0 Pin IO
Read/Write
GPIO0 Pin IO
Configuration
Table Data
Look-Up
Status
Bit 0