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PixArt Imaging Inc.

PMW3389DM Product Datasheet

Optical Gaming Navigation Chip

Version 1.01 | 03 Jan 2019 | 11020AENW

PixArt Imaging Inc. http://www.pixart.com

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1.0

Introduction

1.1 Chip Overview

The PMW3389DM is an optical navigation chip targeted for high-end corded gaming mouse. It contains a picture element

array as Image Acquisition System (IAS), a Digital Signal Processor (DSP), a four wire serial port, a power control circuit and

built-in LED driver integrated with IR LED in a package as shown in the block diagram. The chip measures changes in position

by optically acquiring sequential surface images (frames) and mathematically determining the direction and magnitude of

movement. The IAS acquires microscopic surface images via the lens and illumination system. These images are processed

by the DSP to determine the direction and distance of motion. The DSP calculates the Δx and Δy relative displacement

values. An external microcontroller reads the Δx and Δy information from the chip serial port. The microcontroller then

translates the data into USB, or RF signals before sending them to the host PC or game console.

PICTURE

ELEMENT ARRAY

NCS

SCLK

MOTION

MOSI

DSP

OSCILLATOR

VDDO

VDD

GND

MISO

NRESET

VDDPIX

GPO

LED_P

NC

ILLUMINATION

SOURCE

NC

NC

Figure 1. Block Diagram