TMD49037 datasheet(70/86 Pages) OSRAM

70 / 86 page

Datasheet, Public

Page 69

[v2-00] 2022-Nov-03

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TMD4903 − Application Information

Figure 80:

Detailed Flow Diagram of the Remote Control Engine

Remote Control Engine: Complete guide to the inner workings and use of the remote control functionality.

Remote

Control

Engine

IBUSY = 1

PBEN = 1

START

IDLE

RAM_ADDRESS = 0

Get MSB Nibble

from RAM Data

(RDATA-MSBn)

Get RAM Data Byte

(RDATAn)

RDATAn == 0xFE

COUNTERR >=0

RDATAn == 0xFF

RAM_ADDRESS =

START LOCATION OF

REPEATED PATTERN

TIME_INDEX =

MSB NIBBLE

TDATAMSB ==

Activate Modulated

Output

Have TDATAMSB

carrier periods

been output

Get LSB Nibble from

RAM Data

(RDATA-LSBn)

TIME_INDEX =

LSB NIBBLE

TDATALSB ==

Deactivate

Modulated Output

Have TDATALSB

carrier periods

been output

Start

Exit

Output

Pattern

COUNTERR = ISNL

COUNTERR--

COUNTERR

< 255

RAM_ADDRESS++

Output

Pattern

Pause

(if any)

COUNTERW > 0

COUNTERW = IPNL

COUNTERW--

Start

TIMERP = IPOFF

TIMERP > 0

Delay 10us

TIMERP--

Exit

Repeated Sub-Pattern

Complete Waveform

IBUSY = 0

IINT = 1

IIEN == 1

ASSERT INT PIN

Done

Pause

(if any)

TMD49037 Datasheet(PDF) 70 Page - OSRAM GmbH

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