Roku BrightSign Compact, Руководство по оборудованию

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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 st12 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: