TMD49037 datasheet(60/86 Pages) OSRAM

Part #	TMD49037

Description	Color and Proximity Sensor Module with mobeam™ Barcode Emulation and IR Remote Control

PDF	86 Pages

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Manufacturer	OSRAM [OSRAM GmbH]

Direct Link	http://www.osram.com

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60 / 86 page

Datasheet, Public

Page 59

[v2-00] 2022-Nov-03

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TMD4903 − Application Information

Pattern RAM

The Pattern RAM is 256 bytes in length and is divided into two

banks with 128 bytes each. Both banks must be used to enable

all Pattern RAM. To access the Pattern RAM, write 0 or 1 to RAM_

BANK (0x8D<0>). Functionally, the RAM is split into the MSB and

LSB nibbles; each of which are used to index the Timeword RAM

table. The MSB is used for “pulses”, and the LSB is used for “gaps”.

Figure 70:

Terminology of Pattern RAM

Terminology of Pattern RAM: Pulses/Gaps, and Single/Repeated/Complete Patterns are shown.

The pulse-gap pair defines when the LED is modulating or

deactivated, respectively. The control logic processes the RAM

locations sequentially until special operator values are

encountered.

“Single” sub-pattern

“Repeated” sub-pattern

First of Repeat part

Second of Repeat part

“Complete” Pattern

Terminology

Pulse

Gap

TMD49037 Datasheet(PDF) 60 Page - OSRAM GmbH