Epson S1D13708 Benutzerhandbuch

Page 200

Vancouver Design Center

S1D13708

Hardware Functional Specification

X39A-A-001-02

Issue Date: 02/03/07

Mode 80 supports byte and word access for both register and memory access. It also allows 
both big and little endian modes. The following shows an example of a “register write” with 
Mode 80.

1. write register address (command write). Command write is always the lower byte.

2. write register data (data write). Even numbered register uses the low byte.

3. write register address (command write).

4. write register data (data write). Demonstrates how to access an odd numbered register 

using the high byte. Note that the low byte could also have been used by asserting 
WRL# instead of WRU#.

5. write register address (command write)

A0

CS#

WRU#

WRL#

RDU#

RDL#

D[7:0]

D[15:8]

CMD0

CMD1

CMD2

CMD4

DATA1

DATA0

DATA3

DATA2

DATA4

command write

even number

odd number

data write

command write

command write

command write

even number

even number

data write

data write

data write

byte access

byte access

word access

byte access

1

2

3

4

5

6

DATA3

DATA2

Big Endian

D[7:0]

D[15:8]

Little Endian

STEP