CFA633-RDI-KU datasheet(38/86 Pages) CRYSTAIFONTZ

38 / 86 page

Crystalfontz America, Inc.

Data Sheet Release Date 2012/02/21

www.crystalfontz.com

CFA633-RDI-KU LCD Module (Hardware v2.0 / Firmware u2v1)

February 2012

Page 38



ATX function enable and pulse length settings (command 28 (0x1C): Set ATX Power Switch

Functionality (Pg. 52)).



Baud rate (command 33 (0x21): Set Baud Rate (Pg. 56)).



GPIO settings (command 34 (0x22): Set or Set and Configure GPIO Pins (Pg. 56)).

You cannot store the fan or temperature reporting (although the live display of fans or temperatures can be

saved). You cannot store the fan fail-safe or host watchdog.The host software should enable these items once the

system is initialized and it is ready to receive the data.

type: 0x04 = 410

valid data_length is 0

The return packet will be:

type: 0x40 | 0x04 = 0x44 = 6810

data_length = 0

If the current state and the boot state do not match after saving, the module will return an error instead of an ACK. In

this unlikely error case, the boot state will be undefined.

5 (0x05): Reboot CFA633, Reset Host, or Power Off Host

This command instructs the CFA633 to simulate a power-on restart of itself, reset the host, or turn the host's power off.

The ability to reset the host may be useful to allow certain host operating system configuration changes to complete. The

ability to turn the host's power off under software control may be useful in systems that do not have ACPI compatible

BIOS.

Rebooting the CFA633 may be useful when testing the boot configuration. It may also be useful to re-enumerate the

devices (WR-DOW-Y17 temperature sensors) on the One-Wire bus. To reboot the CFA633, send the following packet:

type: 0x05 = 510

valid data_length is 3

data[0] = 8

data[1] = 18

data[2] = 99

NOTE

The GPIO pins used for ATX control must not be configured as user GPIO, and must be configured to

their default drive mode in order for the ATX functions to work correctly. These settings are factory

default, but may be changed by the user. Please see command 34 (0x22): Set or Set and Configure

GPIO Pins (Pg. 56).

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