Revision 4
Author: Anders Zellén
Wireless Solution Sweden Sales AB
Stureparksvägen 7
– 451 55 Uddevalla – Sweden
+46 522 511 511 Tel. +46 522 440 885 Fax.
Wirelessdmx.com [email protected]
16(23)
14/11/2014
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
Text
Color
Description
Signal 5
0
Green
Signal strength
Signal 4
1
Green
Signal strength
Signal 3
2
Green
Signal strength
Signal 2
3
Yellow
Signal strength
Signal 1
4
Red
Signal strength, G4/G4S indication on
transmitter
Transmit Mode
5
TX
Green
Radio transmitter
Control Mode
6
CTRL Red
In control mode
Link
7
LINK
Green
Link established
Data
8
DATA Green
DMX Data present
Power
9
PWR
Blue
Power on indication
Reserved
10-
11
Receiver Mode
12
RX
Green
Radio receiver
G4 Mode
13
G4
Green
Mode indication
RDM
14
RDM
Green
RDM on/off
Reserved
15
7.2.2 SPI Settings
Parameter
Min
Typ.
Max
Unit
Comment
SPI Mode
0. Clock idles low. Data valid on
leading clock edge
Data Bit Rate
2.5
MHz
Bit order
Most Significant Bit first
