CFA633-RDI-KU datasheet(48/86 Pages) CRYSTAIFONTZ

48 / 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 48

type: 0x15 = 2110

valid data_length is 7 or 2 (for turning a slot off)

data[0]: display slot (0-7)

data[1]: type of item to display in this slot

0 = nothing (data_length then must be 2)

1 = fan tachometer RPM (data_length then must be 7)

2 = temperature (data_length then must be 7)

data[2]: index of the sensor to display in this slot:

0-3

are valid for fans

0-31 are valid for temperatures (and the temperature

device must be attached)

data[3]: number of digits

for a fan: 4 digits (0 to

9999) valid fan speed range

for a fan: 5 digits (0 to 50000) valid fan speed range

for a temperature: 3 digits (

-XX or

XXX)

for a temperature: 5 digits (-XX.X or XXX.X)

data[4]: display column

0-13 valid for a 3-digit temperature

0-12 valid for a 4-digit fan

0-11 valid for a 5-digit fan or temperature

data[5]: display row (0-1 valid)

data[6]: pulses_per_revolution or temperature units

for a fan: pulses per revolution for this fan (1 to 32)

for a temperature: units (0 = deg C, 1 = deg F)

If a One-Wire CRC error is detected, the temperature will be displayed as "ERR" or "ERROR".

If the frequency of the tachometer signal is below the detectable range, the speed will be displayed as "SLOW" or

"STOP".

Displaying a fan will override the fan power setting to 100% for up to 1/8 of a second every 1/2 second. Please see Fan

Connections (Pg. 29) for a detailed description.

The return packet will be:

type: 0x40 | 0x15 = 0x55 = 8510

data_length = 0

22 (0x16): Send Command Directly to the LCD Controller

The controller on the CFA633 is HD44780 compatible. Generally you won’t need low-level access to the LCD controller

but some arcane functions of the HD44780 are not exposed by the CFA633’s command set. This command allows you

to access the CFA633’s LCD controller directly. Note: It is possible to corrupt the CFA633 display using this command.

type: 0x16 = 2210

data_length: 2

data[0]: location code

0 = "Data" register

1 = "Control" register

data[1]: data to write to the selected register

The return packet will be:

type: 0x40 | 0x16 = 0x56 = 8610

data_length = 0

23 (0x17): Configure Key Reporting

By default, the CFA633 reports any key event to the host. This command allows the key events to be enabled or disabled

on an individual basis. The key events set to report are one of the items stored by the command 4 (0x04): Store Current

State As Boot State (Pg. 37).

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