BrightSign XD230 Hardware - Manual (Page 21)

BrightSign XD230, XD1030, XD1230
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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, 2012
Serial Port
The XD1030 and XD1230 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.
Video Encoder and Filter
The BCM7421 streams decoded video using a single-data rate clock. It also streams the same video out of the on-board
DACs.
Audio Outputs
BrightSign XD players each have a single Texas Instruments high quality audio DAC device, which takes in digital audio
signals from the BCM7421 in an I2S audio format. The AUD_LRCIN is the framing signal for the audio and runs at the
frame rate of the audio source (usually either 44.1KHz or 48KHz). The AUD_BITCLK signal is typically 32 times higher
than the AUD_LRCIN.
The audio output is fed through a TI amplifier and sent directly to the audio output jack. It can drive a 32Ω load with a 2V
RMS signal.
On-Board LEDs
There are eight on-board LEDs that indicate the following:
LED Indication
Green power Displays when the board is powered up and not in reset mode.
Green SD activity Flashes any time there is activity on the SD card.
Green MicroSD activity Displays when a MicroSD card is present.
Green network activity
Displays when the player is connected to the BrightSign Network.
Green Ethernet activity Flashes when the player is connecting to the network. Displays when connected.
Green WiFi activity
Flashes when the player is connecting to the wireless network. Displays when connected.