Epson S1D13708 Benutzerhandbuch

Page 182

Vancouver Design Center

S1D13708

Hardware Functional Specification

X39A-A-001-02

Issue Date: 02/03/07

Panning is achieved by changing the Display Start Address register:

• Increment/decrement the Display Start Address register pans the display window 

right/left by 32 bits, e.g. 4 pixels in 8-bpp mode.

• Increase/decrease the Display Start Address register by an amount equals to the Memory 

Address Offset pans the display window down/up by 1 line.

270

°

 SwivelView™ requires the Memory Clock (MCLK) to be at least 1.25 times the 

frequency of the Pixel Clock (PCLK), i.e. MCLK 

≥

 1.25PCLK.

The following figure shows how the programmer sees a 320x480 portrait image and how 
the image is being displayed. The application image is written to the S1D13708 in the 
following sense: A–B–C–D. The display is refreshed by the S1D13708 in the following 
sense: C-A-D-B.

°

image seen by programmer
= image in display buffer

480

SwivelView

window

480

320

A

B

C

D

D

C

B

A

32

0

Swi

v

elV

iew

w

in

dow

image refreshed by S1D13708

physical memory

display start address

(panel origin)

start address