CFA633-RDI-KU datasheet(26/86 Pages) CRYSTAIFONTZ

26 / 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 26

ATX POWER SUPPLY AND CONTROL CONNECTIONS

The CFA633-RDI-KU has the ability to control power on/off and reset functions of a standard ATX PC.

The Crystalfontz WR-PWR-Y14 cable simplifies ATX power control connections. When using this cable, please open

jumper JP8 and JPGPIO1. Close jumper JPFLPSNS in order to ensure correct operation. See Jumper Locations and

Functions (All Interfaces) (Pg. 17) for jumper positions and locations.

For this functionality, this configuration of the CFA633-RDI-KU is powered from the PC's VSB signal (the “stand-by” or

“always-on” +5v ATX power supply output).

By default, the pin labeled +5v on the CFA633-RDI-KU’s connector J8 is electrically connected to the +5v pin on the

CFA633-RDI-KU’s J_ PWR connector. If you are using CFA633-RDI-KU to do ATX power control, you will want to open

jumper JP8, which will disconnect the +5v of the J_PWR connector from the +5v of connector J8.

Since the CFA633-RDI-KU must act differently depending on if the host's power supply is “on” or “off”. By opening

JPGPIO1, a 5K

Ω resistor is added in series that will connect to the host's “switched +5v” through JPFLPSNS. The

switched +5v power can be either the J_PWR for serial or J_USB for USB module.

The motherboard's power switch input is connected to Pin 5 of the CFA633-RDI-KU’s connector J8 (labeled as GPIO[2]).

This pin functions as POWER CONTROL. The POWER CONTROL pin is configured as a high-impedance input until the

LCD module wants to turn the host on or off, then it will change momentarily to low impedance output, driving either low

or high depending on the setting of POWER_INVERT. (See command 28 (0x1C): Set ATX Power Switch

Functionality (Pg. 52).)

The motherboard's reset switch input is connected to Pin 4 of the CFA633-RDI-KU connector J8 (labeled as GPIO[3]).

This pin functions as RESET. The RESET pin is configured as a high-impedance input until the LCD module wants to

reset the host. Then it will change momentarily to low impedance output, driving either low or high depending on the

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 the default

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

Pins (Pg. 56).

NOTE

If the Crystalfontz WR-PWR-Y14 cable is ordered at the same time as the module, Crystalfontz will

install the WR-PWR-Y14 connector on the module, open jumper per JP8 and JPGPIO1. Close

jumper JPFLPSNS, and send the following software configuration commands (unless we are other-

wise instructed). Please note that once these changes are made, power must be applied to connec-

tor J_PWR, pin +5v and connector J8, pin +5v for the module to power up:

command = 28

// Set ATX Switch Functionality

length = 1

data[0] = 240 // Enable:

KEYPAD_POWER_OFF

KEYPAD_POWER_ON

KEYPAD_RESET

LCD_OFF_IF_HOST_IS_OFF

command = 4

// Store current state as boot state

length = 0

CFA633-RDI-KU датащи(PDF) 26 Page - Crystalfontz America, Inc.

CFA633-RDI-KU датащи(HTML) 26 Page - Crystalfontz America, Inc.

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86

датащи скачать

ссылки URL