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This page describes the characteristics and operation of all connectors on 4K models.
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The following table illustrates the pinout of the DE9 serial connector on 4K players:
pin | Description | pin | Description |
1 | NC | 2 | Receive data into the device |
3 | Transmit data out of the device | 4 | Available 5V@500mA |
5 | Ground | 6 | NC |
7 | RTS | 8 | CTS |
9 | NC | -- | -- |
DA15 GPIO
The GPIO switch/lLED connector is a DA15 female. This connector is used to allow the player to control external LEDs or other devices requiring 24mA of current or less.
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 connector also allows the 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 DA15 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.
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| Note |
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NoteThe GPIO outputs have 100Ω series resistors; the GPIO inputs have 1K pullup resistors to 3.3V; and the input threshold on the 541 chips 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) |
The following table illustrates the pinout of the DA15 on the 4K series of players:
pin | Description | pin | Description |
1 | IR blaster input | 2 | Ground |
3 | Button 6 I/O | 4 | Button 5 I/O |
5 | Button 3 I/O | 6 | Ground |
7 | Button 1 I/O | 8 | +3.3V output at 500mA |
9 | Ground | 10 | Button 7 I/O |
11 | Ground | 12 | Button 4 I/O |
13 | Button 2 I/O | 14 | Ground |
15 | Button 0 I/O | -- | -- |
Here is the DA15 female as viewed from the front of a BrightSign 4K player:
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The following table illustrates the pinout of the RJ45:
pin | Description | pin | Description |
1 | TX+ | 2 | TX- |
3 | RX+ | 4 | BI+ |
5 | BI- | 6 | RX- |
7 | BI+ | 8 | BI- |
USB
The 4K1042 has a single USB 2.0 port, and the 4K1142 has two USB 3.0 ports and a single USB 2.0 port. All ports are capable of transfer speeds up to 480 Mbit/s. The maximum length for a USB cable is 5 meters. The following tables illustrate the pinout of the USB 2.0/3.0 host ports:
USB 2.0
pin | Description | pin | Description |
1 | VBUS | 2 | D- |
3 | D+ | 4 | Ground |
USB 3.0
pin | Description | pin | Description |
1 | VBUS | 2 | D- |
3 | D+ | 4 | Ground |
5 | StdA_SSTX- | 6 | StdA_SSTX+ |
7 | Ground | 8 | StdA_SSRX- |
9 | StdA_SSRX+ |
3.5mm Audio Connector
All 4K models have a single 3.5mm female audio connector, which transmits an analog stereo signal. The full-scale voltage output of the audio is 2V RMS. The minimum load impedance of the audio connector is 32Ω.
| Note |
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NoteThe BrightSign expansion module allows you to drive up to three sets of 5W headphones directly. |
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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) | -- |
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, capable of accepting a maximum video resolution of 3840x2160x60p. The signaling also conforms with DVI 1.0, HDMI 1.4, and HDCP 2.2 standards.
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