CFA633-RDI-KS datasheet(42/88 Pages) CRYSTAIFONTZ

42 / 88 page

Crystalfontz America, Inc.

Data Sheet Release Date 2012/02/21

www.crystalfontz.com

CFA633-RDI-KS LCD Module (Hardware v2.0 / Firmware s2v1)

February 2012

Page 42

In any of the above cases, the return packet will be:

type: 0x40 | 0x05 = 0x45 = 6910

data_length = 0

6 (0x06): Clear LCD Screen

Sets the contents of the LCD screen DDRAM to ' ' = 0x20 = 32 and moves the cursor to the left-most column of the top

line.

type: 0x06 = 610

valid data_length is 0

The return packet will be:

type: 0x40 | 0x06 = 0x46 = 7010

data_length = 0

Clear LCD Screen changes the LCD. The LCD contents is one of the items stored by the command 4 (0x04): Store

Current State As Boot State (Pg. 39).

7 (0x07): Set LCD Contents, Line 1

Sets the center 16 characters displayed for the top line of LCD screen.

type: 0x7 = 710

valid data_length is 16

data[] = top line’s display content (must supply 16 bytes)

The return packet will be:

type: 0x40 | 0x07 = 0x47 = 7110

data_length = 0

Set LCD Contents, Line 1 is one of the items stored by the command 4 (0x04): Store Current State As Boot

State (Pg. 39).

NOTE

The CFA633 will return the acknowledge packet immediately, then power cycle the host. The power cycle

length is dependent on the length of the power pulse (command 28 (0x1C): Set ATX Power Switch

Functionality). After power cycling the host, the module will reboot itself. The module will not respond to

new command packets for up to 3 seconds after its reboot. Part of this delay is the intentional staggered

sequencing of turning on power to the fans. If you are not using fans, you can speed the boot process by

setting the fan power to 0 (command 17 (0x11): Set Fan Power and saving this as the default boot state

(command 4 (0x04): Store Current State As Boot State). Normally the host will be off or recovering from its

own power cycle, so the boot delay of the module will not be of consequence.

NOTE

Please use this command only if you need backwards compatibility with older CFA633 units. For new

applications, please use the more flexible command 31 (0x1F): Send Data to LCD (Pg. 58).

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