Page 20 Epson Research and Development
Vancouver Design Center
S1D13505 Hardware Functional Specification
X23A-A-001-14 Issue Date: 01/02/02
4 Internal Description

4.1 Block Diagram Showing Datapaths

4.2 Block Descriptions

4.2.1 Register

The Register block contains all the register latches

4.2.2 Host Interface

The Host Interface (I/F) block provides the means for the CPU/MPU to communicate with the
display buffer and internal registers via one of the supported bus interfaces.

4.2.3 CPU R/W

The CPU R/W block synchronizes the CPU requests for display buffer access. If SwivelView is
enabled, the data is rotated in this block.
Clocks
LCD
Memory
Controller
16-bit FPM/EDO-DRAM
LCD
Power Sa ve
Register
CRTC
Look-
I/F
CPU/MPU Host
I/F
CPU
R/W Display
FIFO
CRT
Cursor
FIFO
Up
Tables DAC