
Epson Research and Development
Page 13
Vancouver Design Center
Hardware Functional Specification
S1D13A05
Issue Date: 2003/05/01
X40A-A-001-04
Revision 4.0
1 Introduction
1.1 Scope
This is the Hardware Functional Specification for the S1D13A05 LCD/USB Companion
Chip. Included in this document are timing diagrams, AC and DC characteristics, register
descriptions, and power management descriptions. This document is intended for two
audiences: Video Subsystem Designers and Software Developers.
This document is updated as appropriate. Please check for the latest revision of this
document before beginning any development. The latest revision can be downloaded at
www.erd.epson.com.
We appreciate your comments on our documentation. Please contact us via email at
documentation@erd.epson.com.
1.2 Overview Description
The S1D13A05 is an LCD/USB solution designed for seamless connection to a wide
variety of microprocessors. The S1D13A05 integrates a USB slave controller and an LCD
graphics controller with an embedded 256K byte SRAM display buffer. The LCD
controller supports all standard panel types and multiple TFT types eliminating the need for
an external timing control IC. The S1D13A05 includes a Hardware Acceleration Engine to
greatly improve screen drawing functions and the built-in USB controller provides revision
1.1 compliance for applications requiring a USB client. This high level of integration
provides a low cost, low power, single chip solution to meet the demands of embedded
markets requiring USB client support, such as Mobile Communications devices and Palm-
size PCs.
The S1D13A05 utilizes a guaranteed low-latency CPU architecture that provides support
for microprocessors without READY/WAIT# handshaking signals. The 32-bit internal data
path, write buffer and the Hardware Acceleration Engine provide high performance
bandwidth into display memory allowing for fast display updates.
Additionally, products requiring a rotated display can take advantage of the SwivelViewTM
feature which provides hardware rotation of the display memory transparent to the software
application. The S1D13A05 also provides support for “Picture-in-Picture Plus” (a variable
size Overlay window).
The S1D13A05, with its integrated USB client, provides impressive support for Palm OS
handhelds. However, its impartiality to CPU type or operating system makes it an ideal
display solution for a wide variety of applications.