BrightSign 4K242, 4K1042, 4K1142
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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 LLC, 2014
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 3.5mm IR in/out port has the following pinout:
• Tip: 3.3V
• Ring: IR Input
• Sleeve: IR Output
Note: The sleeve is used as a ground during input operations.
SPDIF Out
The SPDIF_OPT signal is generated within the BCM7444 CPU, which is connected directly to the SPDIF output.
Wireless
BrightSign 4K players feature a six-pin connector on top of the printed circuit board (PCB) within the case. This connector
allows installation of a peripheral wireless module that supports 802.11 a/b/g/n WiFi protocols.
