Led Overlay Interface, L6 Only; Led Order; Spi Settings - Wireless Solution W-DMX TRX Implementation Manual

7.2 LED Overlay Interface, L6 only

This interface is implemented on the W-DMX BlackBox/WhiteBox range.
The overlay interface consists of an SPI interface that shifts out data for the LEDs as
described below. To avoid flicker a latched shift register is recommended.
The SPI speed is 2.5MHz and Overlay CS is pulled high before the output start and pulled
low after the SPI output has ended.
.

7.2.1 LED order

Name Bit
Signal 5 0
Signal 4 1
Signal 3 2
Signal 2 3
Signal 1 4
Transmit Mode 5
Control Mode 6
Link 7
Data 8
Power 9
Reserved 10-
11
Receiver Mode 12
G4 Mode 13
RDM 14
Reserved 15

7.2.2 SPI Settings

Parameter
SPI Mode
Data Bit Rate
Bit order
Revision 4
Author: Anders Zellén
16(23)
Text Color Description
Green Signal strength
Green Signal strength
Green Signal strength
Yellow Signal strength
Red Signal strength, G4/G4S indication on
transmitter
TX Green Radio transmitter
CTRL Red In control mode
LINK Green Link established
DATA Green DMX Data present
PWR Blue Power on indication
RX Green Radio receiver
G4 Green Mode indication
RDM Green RDM on/off
Min Typ. Max
2.5
Unit Comment
0. Clock idles low. Data valid on
leading clock edge
MHz
Most Significant Bit first
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14/11/2014