RL78/I1A Lighting Communications Using RL78/I1A
The purpose of this application note is to describe how to implement different communication interfaces for lighting control within lighting systems such as DALI, DMX512 and IR remote control using the RL78/I1A features.
This document is intended for lighting system engineers who design and develop lighting systems with communication capabilities.
The target products are as follows:
● 20-pin: R5F1076C.
● 30-pin: R5F107AE, R5F107AC.
● 38-pin: R5F107DE.
RL78/I1A microcontrollers support different communication protocols for lighting control of LED lighting systems:
DALI communications supported by an embedded Manchester encoder peripheral mounted on channels 0 and 1 of Serial Array Unit 4, DALI/UART4 (transmission frames: 11, 19 or 27 bits, reception frames: 19, 20 or 27 bits).
DMX512 communications supported via the UART0 serial interface and the input signal low-level width measurement function of the 16-bit Timer Array Unit.
Infrared (IR) remote control signal reception can also be managed by hardware using the interval timer and input signal high-level width measurement functions of the 16-bit Timer Array Unit.
The Applilet EZ for HCD Controller software automatically generates sample code to control these lighting control interfaces. This application note describes the sample code generated by Applilet EZ for HCD Controller version E6.0.
Applilet EZ for HCD Controller can generate sample code for the RL78/I1A DC/DC LED Control Evaluation Board .The red blocks on the left hand side of the board block diagram (Figure 1-1) shows the three communication circuits introduced above, and gives an overview of their connections to the RL78/I1A peripherals:
● DALI circuit → DALI/UART4 interface.
● DMX512 circuit → UART0 interface and TAU channels in interval timer mode and low-level width measurement mode.
● IR remote control circuit → TAU channels in interval mode and high-level width measurement mode.
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Application note & Design Guide |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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Mar. 26, 2013 |
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Rev.2.01 |
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R01AN1115EJ0201 |
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1.3 MB |
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