HARDWARE MANUAL 4K242, 4K1042, 4K1142 BrightSign, LLC. 16795 Lark Ave., Suite 200 Los Gatos, CA 95032 | 408-852-9263 | www.brightsign.
TABLE OF CONTENTS Overview ............................................................................................................................... 1 Block Diagram ......................................................................................................................................... 2 4K242...................................................................................................................................................... 3 4K1042.....................................
Environmental and Power Usage .....................................................................................16 Theory of Operation ...........................................................................................................18 Power Supply ........................................................................................................................................ 18 Reset..........................................................................................................
BrightSign 4K242, 4K1042, 4K1142 OVERVIEW The 4K series is a line of commercial-grade solid-state media players that can be used to decode images, audio, and video (up to 3840x2160x60p) for digital-signage and kiosk applications. In addition to driving audio/video devices, these players can be controlled with various networked and built-in interfaces. This manual specifies the hardware interfaces and operational theory of the 4K series.
BrightSign 4K242, 4K1042, 4K1142 Block Diagram 2 All information provided in this reference manual applies to products under development. The characteristics and specifications of these products are subject to change without notice. BrightSign assumes no obligation regarding future manufacturing unless otherwise agreed to in writing.
BrightSign 4K242, 4K1042, 4K1142 4K242 Front • • • DA15 GPIO 3.5mm IR in/out 3.
BrightSign 4K242, 4K1042, 4K1142 • • SATA connector WiFi Module connector 4 All information provided in this reference manual applies to products under development. The characteristics and specifications of these products are subject to change without notice. BrightSign assumes no obligation regarding future manufacturing unless otherwise agreed to in writing.
BrightSign 4K242, 4K1042, 4K1142 4K1042 Front • • • • DE9 RS232 serial (male) DA15 GPIO 3.5mm IR in/out 3.5mm audio out Left • • GPIO service button GPIO reset button Right • • • • • • • • • SDHC/SDXC flash card slot Status/error LED (red) Update LED (yellow) Power LED (green) SD activity LED (green) MicroSD presence LED (green) Ethernet activity LED (green) WiFi activity LED (green) Server connection (green) Back • • • • 12V Molex power connector SPDIF out HDMI out USB 3.
BrightSign 4K242, 4K1042, 4K1142 • RJ45 Ethernet (POE) Internal • • • MicroSD slot SATA connector WiFi Module connector 6 All information provided in this reference manual applies to products under development. The characteristics and specifications of these products are subject to change without notice. BrightSign assumes no obligation regarding future manufacturing unless otherwise agreed to in writing.
BrightSign 4K242, 4K1042, 4K1142 4K1142 Front • • • • USB 2.0 DE9 RS232 serial (male) 3.5mm IR in/out 3.
BrightSign 4K242, 4K1042, 4K1142 • • (2x) USB 3.0 RJ45 Ethernet (POE) Internal • • • MicroSD slot SATA connector WiFi Module connector 8 All information provided in this reference manual applies to products under development. The characteristics and specifications of these products are subject to change without notice. BrightSign assumes no obligation regarding future manufacturing unless otherwise agreed to in writing.
BrightSign 4K242, 4K1042, 4K1142 HARDWARE INTERFACES This section describes the characteristics and operation of all connectors on 4K models. Power Connector The power connector for 4K players is rated for 12V @ 5A. The plug is a right-side positive, keyed and locking 4-pin connector. DE9 RS-232 Serial The RS-232 interface is a male DE9 connector. The BrightSign 4K player is a DTE device, similar to a PC.
BrightSign 4K242, 4K1042, 4K1142 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.
BrightSign 4K242, 4K1042, 4K1142 Note: The 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)=.
BrightSign 4K242, 4K1042, 4K1142 Here is the DA15 female as viewed from the front of a BrightSign 4K player: A button/LED/IR board can be used to demonstrate the GPIO and IR functions on a BrightSign player. This board is built by a third-party manufacturer and can be purchased upon request. RJ45 Ethernet The 4K series has an RJ45 connector for Gigabit (10/100/1000) base-T Ethernet, as well as Power over Ethernet (PoE) capabilities.
BrightSign 4K242, 4K1042, 4K1142 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.
BrightSign 4K242, 4K1042, 4K1142 • • Ring: Right audio Sleeve: Ground for audio signal 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 3840x2160x60p.
BrightSign 4K242, 4K1042, 4K1142 The HDMI signaling has CEC (but no ARC or HEC) 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. 3.5mm IR Out 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.
BrightSign 4K242, 4K1042, 4K1142 ENVIRONMENTAL AND POWER USAGE BrightSign 4K players are designed to be used between 0°C and 40°C, at 90% maximum relative humidity, noncondensing. The power supply for 4K players is 60W and 12V at 5A. The device will use approximately 1A of power when playing a 3840x2160x60p H.265 (HEVC) source file. Important: This product is intended to be supplied by power from a Listed Power Adapter, rated +12Vdc at 5A minimum.
BrightSign 4K242, 4K1042, 4K1142 Connector Maximum Power Usage Ethernet Approx. 180mA (when transferring data) USB 2.0/3.0 500mA (on each connector) DE9 5V 100mA HDMI 5V 500mA IR input/output 300mA 17 All information provided in this reference manual applies to products under development. The characteristics and specifications of these products are subject to change without notice. BrightSign assumes no obligation regarding future manufacturing unless otherwise agreed to in writing.
BrightSign 4K242, 4K1042, 4K1142 THEORY OF OPERATION This section describes how different components operate on BrightSign 4K players. Power Supply There are several voltage levels present in BrightSign 4K players. Reset BrightSign 4K players have a Low Voltage Reset circuit. This circuit will hold the RESET_L signal low until a valid 3.3V power source is present. BCM7444/7252 CPU The 4K242 and 4K1042 utilize a BCM7252 CPU, while the 4K1142 utilizes a BCM7444 CPU.
BrightSign 4K242, 4K1042, 4K1142 from the NAND flash device into the SDRAM and then execute the code from the SDRAM. The SDRAM runs at a clock rate of 1067MHz, with a data rate of 2133MT/s. Serial Port The 4K1042 and 4K1142 have a built-in UART that communicates with the RS-232 level shifter. The MAX232 creates valid RS-232 voltage levels for the transmit pin by using a capacitive voltage switcher.
BrightSign 4K242, 4K1042, 4K1142 Yellow update (Upd) Flashes when the board is being upgraded. Red status (Err) Flashes a certain number of times to indicate which error is occurring. The flash codes are described below. 2 Unspecified error 3 Network recovery script is preparing to run on a device configured for network recovery. 4 No upgrade file found 5 Failed to load kernel module 6 Board is not capable of running the current firmware version. 7 A piece of on-board hardware is not working.
BrightSign 4K242, 4K1042, 4K1142 SDHC/SDXC and MicroSD Slots The 4K series has one SDHC/SDXC and one internal MicroSD card slot, both capable of transferring a 25 Mbit/sec video stream, one 5.1 AC3 stream (pass-through), and three stereo PCM tracks simultaneously. There is no inherent limit on the storage capacity of SD cards used for 4K series players. NAND Flash BrightSign players have a built-in NAND flash.
BrightSign 4K242, 4K1042, 4K1142 DIMENSIONS 22 All information provided in this reference manual applies to products under development. The characteristics and specifications of these products are subject to change without notice. BrightSign assumes no obligation regarding future manufacturing unless otherwise agreed to in writing.
BrightSign 4K242, 4K1042, 4K1142 MOUNTING PROCEDURE BrightSign 4K players can be mounted on a wall using the brackets attached to each side. It is recommended that you mount the device using four screws (one for each bracket slot). The screws should have a major diameter between 3.5mm and 4.2mm. Important: Nails should not be used to mount the device. 23 All information provided in this reference manual applies to products under development.
