Roku BrightSign Compact Hardware Guide PCBA: C Version: .
Table of Contents OVERVIEW ..................................................................................................................................... 3 PORTS .......................................................................................................................................... 5 POWER CONNECTOR ..................................................................................................................... 5 DB9 RS232 CONNECTOR ..............................................
BrightSign Compact Overview This hardware reference manual specifies the hardware interfaces on the Brightsign Compact, as well as providing a guide to troubleshoot the hardware of the Brightsign Compact for in-field service. This manual will not describe any software functions. The Brightsign Compact is a device that can be used to drive a variety of HDTV and computer monitors for digital sign and kiosk applications.
BrightSign Compact Compact Block Diagram This information applies to a product under development. Its characteristics and specifications are subject to change without notice. Roku assumes no obligation regarding future manufacturing unless otherwise agreed to in writing. www.rokulabs.
BrightSign Compact Ports On back of the unit: Power plug for 5V power input at 3A 10/100 Ethernet jack HDMI connector Triple RCA jacks for Component Hi-Def output (Y-Pr-Pb). DB15 VGA video connector. Stereo 1/8” mini plugs for audio output On the side of the unit: USB connector GPIO button Reset button On front of the unit: SD & SDHC flash card slot Green Flash Activity LED Green Power LED Red Status/Err LED Yellow Upgrade LED DA15 Female for GPIO, IR in & out, and 3.3V power.
BrightSign Compact The pinout of the DB9 on the REVB HD2000 board is as follows (NC=No Connect): pin Description 1 NC 3 Transmit data out of HD2000 5 Ground 7 Optional TX 2nd channel 9 NC pin Description 2 Receive data into HD2000 4 Available 5V @ 500mA 6 8 NC Optional RX 2nd channel DB15 Switch/LED connector The Switch/Led connector is a DB15 Female. This connector is used to allow the Compact to control external LEDs or other devices requiring 24mA of current or less.
BrightSign Compact The DB15 female has the following pinout: pin 1 3 5 7 9 11 13 15 Description IR Blaster output Button 6 I/O Button 3 I/O Button 1 I/O Ground Ground Button 2 I/O Button 0 I/O pin 2 4 6 8 10 12 14 Description Ground Button 5 I/O Ground +3.3V output @ 500mA Button 7 I/O Button 4 I/O Ground DA15 female as viewed from the back of Brightsign Compact: Roku makes a button/LED/IR board that can be used to demonstrate how the GPIO and IR works.
BrightSign Compact In this example schematic, we are using a Vishay TSOP39338 IR receiver, which can operate properly on 3.3V. The TSOP39138 will also work. We are using a Honeywell SEP8506-003 IR Diode as the IR blaster output. This information applies to a product under development. Its characteristics and specifications are subject to change without notice. Roku assumes no obligation regarding future manufacturing unless otherwise agreed to in writing. www.rokulabs.
BrightSign Compact Ethernet The Brightsign Compact has a standard RJ45 connector for 10/100 base T Ethernet. Maximum cable length is 100 Meters. The pinout of the RJ45 is as follows: pin 1 3 5 7 Description TX+ RX+ RC to ground RC to ground pin 2 4 6 8 Description TXRC to ground RX RC to ground USB The Brightsign Compact has a high speed (480 mbit) USB host port. Maximum cable length is 5 Meters.
BrightSign Compact 1080i video: Y from Green jack, Pr from Red jack, and Pb from Blue jack. 1/8” Audio connectors The Brightsign Compact has one 1/8” female audio connectors. The connector has a stereo audio signal. The full scale voltage output of the audio is 2V RMS, with no load. The minimum load resistance that should be connected to the audio output is 5K Ohms. The connector is NOT capable of driving headphones directly.
BrightSign Compact Power usage The power supply on the Brightsign Compact is a 15W 5.2V @ 3A power supply. The Brightsign Compact will use approximately 1A of power when playing a 720p or 1080i MPEG2 HD source file. 1A at 5.2V is about 5W. This implies that there is 2A of additional available power that can be used by peripherals connected to the Brightsign Compact. The user should not connect up any combination of peripherals that will exceed 2A draw.
BrightSign Compact Mechanical This information applies to a product under development. Its characteristics and specifications are subject to change without notice. Roku assumes no obligation regarding future manufacturing unless otherwise agreed to in writing. www.rokulabs.
BrightSign Compact Theory of operation Power Supply The Brightsign Compact has a five voltages present. These are 5V, 3.3V, 2.5V, 1.8Vand 1.2V. 5V comes in from the power connector and is used directly for USB, the video filter chip.. 3.3V is created from 5V by a Semtech SC196 switching regulator. Similar regulators are used to create 2.5V for the DDR SDRAM, 1.8V for the HDMI chip, and 1.2V for the PNX8935 core voltage. Reset The Brightsign Compact has a Low Voltage Reset circuit made up of a ADM809SAKS.
BrightSign Compact same signal). Some VGA monitors will sync at 720p and 1080i, so only in this case can a picture be displayed on both component and VGA at the same time. HDMI encoder The QVCP5L video is also sent over to the TDA9984B HDMI encoder chip, which drives the HDMI data out of the Brightsign Compact. The HDMI chip is also connected to I2S audio and SPDIF audio, so that audio will be driven out the HDMI connector. The TDA9984A is capable of upscaling video to 1080P.
BrightSign Compact NAND flash The HD2000 has a built in NAND flash. All the code for the unit is stored on the NAND flash, and it may also be possible to store some content on the NAND flash. The NAND flash is connected to the PCI/XIO bus on the PNX8950. Ethernet 10/100 Base T Ethernet is implemented on the HD2000 by a Realtek RTL8100C PHY controller. This device takes the PNX8950 Ethernet signals and converts them to the differential Ethernet signals.
BrightSign Compact Appendix A Flow Chart: (for Repair Center Use) (1) Power Start No LEDs on Is the Output power adapter 5V DC? No Replace Power Adapter Is the Voltage of No Check D12 & D33 for shorts L2 = 5V? Yes Is the Voltage of TP16 3.3V? No Check U17, L3, C204 Yes Check U33, Reset circuit U36, R76, D5 This information applies to a product under development. Its characteristics and specifications are subject to change without notice.
BrightSign Compact (2) Power LED comes on, no serial port output No serial port output Is there 2.5V DC at TP18? No Check U18, L5, C212 Is there 1.
BrightSign Compact (3) Power LED comes on, Red led is out, unit is booting. Serial port tests are in order. Connect a PC to the HD2000 using a null modem cable (Wire up 2-3, 3-2, 55). Set the terminal program to 115200,N,8,1. In order to see all boot messages, hold S1 down while powering the unit on or while using S2 to reset the unit. A) If the serial port is not working, then check U6 and P4. B) Use the “dir” command to test reading the SD flash card.
BrightSign Compact General troubleshooting notes: 1) •VTT (1.25V) should be half of VDD (2.5V) This information applies to a product under development. Its characteristics and specifications are subject to change without notice. Roku assumes no obligation regarding future manufacturing unless otherwise agreed to in writing. www.rokulabs.
