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Table of Contents
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This section describes the characteristics and operation of all connectors on the XT244 and XT1144.

Power Connector

The power connector for the XT244 and XT1144 is rated for 12V@3A. The plug is a right-side positive, locking 2-pin (1x2) connector.

3.5mm Serial 
Anchor
3.5mm_serial
3.5mm_serial

The UART (asynchronous serial) interface is a 3.5mm (1/8") jack that uses RS-232 levels for communication. The receiver will tolerate input voltages between -30V and +30V, with anything below 3V interpreted as a logical 1. The transmitter drives +8V for logical 0 and -8V for logical 1. 

The default baud rate of the interface is 115200, with no parity, 8 data bits, and 1 stop bit. These settings can be configured in the software. The serial interface supports TX, RX, and ground only—RTS/CTS hardware flow control is not supported. The following diagram illustrates the behavior of the TX and RX signal:Image Removed

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The 3.5mm serial port has the following configuration (from the perspective of the player):

  • Tip: Receive

  • Ring: Transmit

  • Sleeve: Ground

BrightSign players are DCE devices, so communication with another DCE device that uses a 3.5mm port would require a null-modem cable or converter that transposes the TX/RX signals. If the device communicating with the player is a DTE device with a DE9 serial port (performing asynchronous transmission), the serial cable should be wired as shown in the following diagram:Image Removed

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GPIO

The XT244 and XT1144 have a 12-pin GPIO switch and LED connector, which allows the player to control external LEDs or other devices requiring 24mA of current or less.

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Connect the LED outputs to the LED ANODE and connect the LED CATHODE to the ground. If you want to connect another device, then the output is capable of sourcing or sinking up to 3.3V at 24mA, but there is a series resistor of 100Ω in each line.

The GPIO also allows for connecting of external contact closures to the ground. In order to connect a switch, connect one side of the switch to the switch input, and connect the other side to one of the ground pins on the GPIO connector. The connector can also supply 3.3V at up to 500mA to an external device. The 3.3V output is polyfuse-protected and can source up to 500mA.

If one BrightSign player is driving the inputs on another BrightSign player, then you can drive at most three inputs from one output. The following calculations explain this limitation:

Note
title

Note

The GPIO outputs have 100Ω series resistors; the GPIO inputs have 1K pullup resistors to 3.3V; and the input threshold is 2V high and .8V low. The high voltage is not problematic, but the low voltage can be if there are too many inputs connected to one output.

1 out driving 1 in

V=3.3*100/(100+1,000)=0.3

1 out driving 2 in

V=3.3*100/(100+500)=0.55

1 out driving 3 in

V=3.3*100/(100+333.3)=0.76

1 out driving 4 in

V=3.3*100/(100+250)=.94 (This is too high, so 1 output driving 3 inputs is the maximum)

GPIO Pinout 

The following table describes the pinout of the GPIO on the XT244 and XT1144: 

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gpio_table
gpio_table

Pin

Function

Pin

Function

1

GND

7

GND

2

3.3V

8

3.3V

3

BUTTON 0

9

BUTTON 4

4

BUTTON 1

10

BUTTON 5

5

BUTTON 2

11

BUTTON 6

6

BUTTON 3

12

BUTTON 7


The following schematic illustrates the pinout of the GPIO connector:

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Example Diagrams

The following example diagrams demonstrate how LED buttons can be wired to the GPIO connector (in both 1- and 4-button configurations):

View file
namephoenix_1button_half_(rev_b).pdf

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View file
namephoenix_4buttons_(rev_b).pdf

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RJ45 LAN

The RJ45 connector on the XT series supports 1000BASE-T networking, as well as Power over Ethernet (PoE) Type 1 and Type 2. Note that there are operational restrictions when using PoE Type 1.

Note
title

Note

WiFi is always disabled when a player is powered by PoE. 

The maximum length for Cat 5E cable is 91 meters for PoE applications and 100 meters for non-PoE applications; the allowed length can be higher or lower depending on the quality of the cable.

Warning
title

Important

The equipment should be connected only to PoE networks without routing to the outside plant.

USB

The XT1144 has two USB 2.0 ports: one Type A and one Type C. The Type A connector can act as a dedicated charging port (DCP) when the two data pins are shorted together, and the Type C connector can operate as either a host or a device (i.e. a dual-role port).

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The following table illustrates the pinout of the USB 2.0 Type A host port:

pin

Description

pin

Description

1

VBUS

2

D-

3

D+

4

Ground


The following table illustrates the pinout of the USB 2.0 Type C host port:

pin

Signal Name

Description

Mating Sequence

pin

Signal Name

Description

Mating Sequence

A1

GND

Ground return

First

B12

GND

Ground return

First

A2




B11




A3




B10




A4

VBUS

Bus power

First

B9

VBUS

Bus power

First

A5

CC1

Configuration channel

Second

B8




A6

Dp1

Positive half of USB 2.0 differential pair – position 1

Second

B7

Dn2

Negative half of USB 2.0 differential pair – position 2

Second

A7

Dn1

Negative half of USB 2.0 differential pair – position 1

Second

B6

Dp2

Positive half of USB 2.0 differential pair – position 2

Second

A8




B5

CC2

Configuration channel

Second

A9

VBUS

Bus power

First

B4

VBUS

 Bus power

First

A10




B3




A11




B2




A12

GND

Ground return

First

B1

GND

Ground return

First

3.5mm Audio Connector

The XT244 and XT1144 have a combination analog/optical audio jack. To transmit a digital audio signal, use a TOSLINK optical audio cable with a 3.5mm connector. Analog and digital audio cannot be transmitted simultaneously.

The full-scale voltage output of the analog audio is 2V RMS. The minimum load impedance is 32Ω.

The analog audio connector has the following pinout:

  • Tip: Left audio

  • Ring: Right audio

  • Sleeve: Ground for audio signal

3.5mm IR Input/Output

The IR blaster generates or receives a space-encoded NEC or Pronto Hex signal. The two transported bit values of the signal (0 and 1) are encoded using differing lengths of low-time IR pulses.

The 3.5mm IR in/out port has the following pinout:

  • Tip: 3.3V@50mA

  • Ring: IR Input

  • Sleeve: IR Output

title
Note

Note

The sleeve is used as a ground during input operations.

HDMI Output

The HDMI® out connector is used to send digital video and audio to HDMI-enabled sink devices. This connector is compatible with HDMI 2.0 devices, capable of outputting a maximum video resolution of 4096x2160x60p.

The following table illustrates the pinout of the HDMI connector:

pin

Description

pin

Description

1

TX2p

2

Ground

3

TX2n

4

TX1p

5

Ground

6

TX1n

7

TX0p

8

Ground

9

TX0n

10

TXCp

11

Ground

12

TXCn

13

CEC

14

NC

15

DDC SCL

16

DDC SDA

17

Ground

18

+5V DDC

19

HPD (Hot Plug Detect)

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HDMI Input

The HDMI-in connector is used to receive digital video and audio from HDMI-enabled source devices. This connector is compatible with HDMI 2.0 devices and capable of accepting a maximum video resolution of 4096x2160x60p. The signaling also conforms with DVI 1.0, HDMI 1.4, and HDCP 1.4 standards.

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