XT5 Hardware Interfaces

this section describes the characteristics and operation of all connectors on the xt245, xt1145, and xt2145 ethernet / poe this connection is used to connect an ethernet cable for internet access and can be used for poe the xt245, xt1145, and xt2145 wired ethernet connection is capable of 10/100/1000 mbps power connector the power connector for the xt245, xt1145, and xt2145, which connects the power cord to the device, is rated for 12v 3a it uses a locking connector to prevent inadvertent disconnections hdmi input the hdmi® in connector is used to receive digital video and audio from hdmi enabled source devices this connector on all xt5 devices is capable of accepting a maximum video resolution of 4096x2160x60p hdmi input is not available on the xt245 the hdmi signaling has cec functionality the cec channel is electrically coupled to the corresponding signal on the hdmi output, and the cec commands will pass through the player even when it does not have power hdmi output the hdmi out connector is used to send digital video and audio to hdmi enabled sink devices the xt245 and xt1145 have an hdmi output and the xt2145 has two hdmi outputs the hdmi output is capable of hdmi 2 1, and one of the hdmi outputs on the xt2145 is hdmi 2 1 cec control and avi are supported over each hdmi interface independently, and it can maintain the configured multiscreen layout if one of the hdmi outputs loses sync gpio the xt245, xt1145, and xt2145 have a 12 pin gpio switch and an led connector, which allows the player to control external leds or other devices requiring 24ma of current or less the port can supply 3 3v\@500ma to pwr pins and sink or source 24ma on each button pin auxiliary power is 1a the gpio port is a standard design manufactured by phoenix contact, wurth electronics, and others pluggable gpio terminal blocks can be inserted into the gpio connector to make bare wire contacts (see here https //www digikey com/short/3101mw for an example part) these terminal blocks can be purchased from the brightsign store https //www brightsign biz/digital signage products/accessories/gpio terminal block if you wish to source your own terminal blocks, make sure to use 4 pin or 6 pin blocks (12 pin blocks are extremely difficult to remove from the gpio port) 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 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 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 illustrates the pinout of the gpio on xt5 players 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 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 this 3 5mm ir in/out port has the following pinout tip 3 3v\@50ma ring ir input sleeve ir output the sleeve is used as a ground during input operations serial the xt5 contains an uart (asynchronous serial) interface it is a 3 5mm (1/8") jack that connects a serial modem or other devices that use a serial connector, and it uses ttl for communication the receiver will tolerate input voltages between 30v and +30v, with anything below 3v interpreted as a logical 1 the output signaling voltage output is +15v or 15v 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 this 3 5mm serial port has the following configuration (from the perspective of the player) tip receive ring transmit sleeve ground brightsign players are dte devices, so communication with another dte 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 audio connector the xt245, xt1145, and xt2145 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 eac3 and ac3 are also supported 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 usb the xt245 does not have a usb port the xt1145 and xt2145 have one usb a 2 0 and one usb c port to connect usb compatible devices the usb c port supports both device and host mode, and brightsign usb accessories (for example, the usb c to gpio panda device) wifi & antennas the xt245, xt1145, and xt2145 models come equipped with an m 2 connector slot and two smt mounted sma connectors the m 2 slot supports m 2 pcie cards for wifi and bluetooth connectivity (sold separately), while the sma connectors facilitate the connection of external antennas ssd interface xt5 players will accept nvme ssds in m 2 2242 or 2280 (but not 2260) form factors of sx id type (single sided form factor) double sided drives (dx id type) will not fit because the back side of the ssd is essentially flush against the motherboard for example, a 2280 s1 module will fit a brightsign player but a 2280 d2 module would not nvme drives with heat sinks are not compatible with our players d4 drives may fit but have not been tested