Roku Roku Compact Istruzioni per l'installazione

Roku BrightSign Compact

Hardware Guide

PCBA: C

Version: .1

Saratoga, CA, USA

Table of Contents

OVERVIEW ..................................................................................................................................... 3

PORTS .......................................................................................................................................... 5

POWER CONNECTOR..................................................................................................................... 5

DB9 RS232 CONNECTOR .............................................................................................................. 5

DB15 SWITCH/LED CONNECTOR ................................................................................................... 6

ETHERNET .................................................................................................................................... 9

USB............................................................................................................................................. 9

DB15 VGA CONNECTOR................................................................................................................ 9

TRIPLE RCACOMPONENT HD VIDEO CONNECTOR.......................................................................... 9

1/8” AUDIO CONNECTORS ............................................................................................................ 10

HDMI CONNECTOR...................................................................................................................... 10

5V SERIAL CONNECTOR............................................................................................................... 10

POWER USAGE ........................................................................................................................... 11

ENVIRONMENTAL ....................................................................................................................... 11

MECHANICAL............................................................................................................................... 12

THEORY OF OPERATION........................................................................................................... 13

POWER SUPPLY .......................................................................................................................... 13

RESET ........................................................................................................................................ 13

PNX8935 CPU........................................................................................................................... 13

BUILT IN FLASH............................................................................................................................ 13

SDRAM ..................................................................................................................................... 13

SERIAL PORT .............................................................................................................................. 13

VIDEO ENCODER AND FILTER ....................................................................................................... 13

HDMI ENCODER.......................................................................................................................... 14

AUDIO OUTPUTS .......................................................................................................................... 14

ON BOARD LEDS........................................................................................................................ 14

ON BOARD SWITCH ..................................................................................................................... 14

RESET SWITCH/GPIO BUTTON: .................................................................................................... 14

SDHC &SD FLASH SLOT............................................................................................................ 14

NAND FLASH .............................................................................................................................. 15

ETHERNET .................................................................................................................................. 15

USB........................................................................................................................................... 15

APPENDIX A................................................................................................................................. 16

FLOW CHART: (FOR REPAIR CENTER USE) ........................................................................... 16

(1) POWER START ....................................................................................................................... 16

(2) POWER LED COMES ON,NO SERIAL PORT OUTPUT................................................................... 17

GENERAL TROUBLESHOOTING NOTES:................................................................................. 19

1) •VTT (1.25V) SHOULD BE HALF OF VDD (2.5V).................................................................... 19

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. As well as driving the Video Display, the Compact has many

different control interfaces built in to allow the sign to be controlled.

There are several different models of Brightsign Compact that Roku sells. This hardware manual will

document all the features on the Compact, even though certain models of the Compact may not have

every feature. For example, only some models of the Compact have the Ethernet interface. Brightsign

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.com © Roku 2008

BrightSign Compact

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.com © Roku 2008

Compact Block Diagram

BrightSign Compact

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.com © Roku 2008

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.

DB9 Male RS232

1/8” serial connector (0-5V serial)

Note: Unless otherwise specified, Roku recommends that all cable lengths be 10 Meters or less. The

customer may be able to use longer cables in specific cases, but the customer must test the cable to see if

it will work. Generally higher quality cables with lower capacitances can be run longer than cheaper

cables.

Power Connector

The power connector on our board is rated at 5V @ 3A. The plug to go into our connector is standard

5.5MM plug, center positive, with a 1.65MM center pin hole. The power is over voltage protected and

reverse polarity protected with two 5W 6V zener diodes. Note that we actually supply our board with

5.2V in order to meet the HDMI specification, but we will refer to this voltage in this document as 5V.

DB9 RS232 connector

RS232 connector is a male DB9. The HD2000 is a DTE device (like a PC). The input to our chip accepts

up to +25V and -25V, so it is compatible with standard +12 and -12 volt signaling. The output of our chip

is rated at +5.4V and -5.4V typical which exceeds the voltage required by the RS232 specification.

The baud rate is 115,200, No parity, 8 data bits, 1 stop bit. No hardware or software flow control.

Maximum cable length is 50 Meters, total cable capacitance 2500pF (using lower capacitance cable

allows longer than 50 Meters). The TX and RX signal will look like this:

BrightSign Compact

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.com © Roku 2008

The pinout of the DB9 on the REVB HD2000 board is as follows (NC=No Connect):

pin Description pin Description

1 NC 2 Receive data into HD2000

3 Transmit data out of

HD2000 4 Available 5V @ 500mA

5 Ground 6 NC

7 Optional TX 2nd channel 8 Optional RX 2nd channel

9 NC

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. Connect the LED outputs to the LED

ANODE and connect LED CATHODE to ground. If you want to connect up some other device then the

output is capable of sourcing or sinking up to 24mA at 3.3V, but we do have a series resistor of 100 Ohms

in each line. This connector also allows connecting up external contact closures to ground. In order to

connect a switch, connect one side of the switch to the switch input, and connect the other side of the

switch to one of the ground pins on the DB25 connector. Finally 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 a Brightsign is driving the inputs on another Brightsign, then you can at most drive 3 inputs from 1

output. Calculations follow showing why this is:

The GPIO outputs have 100 Ohm series resistors, the 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 a problem, but the low

voltage can be if there are too many inputs connected to 1 output.

Here are the calculations:

1 out driving 1 in: V=3.3*100/(100+1000)=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)=0.94 (Too high, so we can only let 1 output drive 3 inputs

MAX!)

BrightSign Compact

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.com © Roku 2008

The DB15 female has the following pinout:

pin Description pin Description

1 IR Blaster output 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 @ 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

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. Here is

the schematic to that board as an example of how to connect things to the GPIO connector:

BrightSign Compact

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.com © Roku 2008

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.

BrightSign Compact

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.com © Roku 2008

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 Description pin Description

1 TX+ 2 TX-

3 RX+ 4 RC to ground

5 RC to ground 6 RX

7 RC to ground 8 RC to ground

USB

The Brightsign Compact has a high speed (480 mbit) USB host port. Maximum cable length is 5 Meters.

The port has the following pinout:

pin Description pin Description

1 VBUS 2 D-

3 D+ 4 Ground

DB15 VGA connector

The VGA connector is able to output RGB video. The connector has the following pinout:

pin Description pin Description

1 RED analog video output 2 GREEN analog video output

3 BLUE analog video output 4 NC

5 Digital ground 6 Analog ground

7 Analog ground 8 Analog ground

9 +5V DDC supply 10 Digital ground

11 NC 12 DDC SDA

13 HSYNC output 14 VSYNC output

15 DDC SCL

Triple RCA Component HD video connector

The component triple RCA connector is a able to output the following formats:

480P video: Y from Green jack, Pr from Red jack, and Pb from Blue jack.

720P video: Y from Green jack, Pr from Red jack, and Pb from Blue jack.

BrightSign Compact

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.com © Roku 2008

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. If you need to drive headphones, look into our Brightsign Expander module, which

can drive 3 sets of 5 Ohm headphones directly.

The audio connector has the following pinout:

Tip: Left audio

Ring: Right audio

Base: Ground for audio signal

HDMI connector

The HDMI connector is used to send digital video and audio to HDMI enabled sink devices. This is 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) 20 Ground

5V Serial connector

The HD2000 has a single 1/8” female connector 5V serial access. This port is used to communicate with

devices that require 0 and 5V serial signaling.

This connector has the following pinout:

Tip: Receive data

Ring: Transmit data

Base: Ground

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