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PixArt Imaging Inc.

PAC7640 Product Datasheet

Enhanced QE Global Shutter Image Sensor

Version 1.1 | 11 Sep 2015 | 41002EN

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

All rights reserved. Any portion in this paper shall not be reproduced, copied, or transformed to any other forms without permission.

1.0 Introduction

1.1

System Overview

The PAC7640 is based on CMOS image sensor technology. It is designed to meet the increasingly demanding needs for

computer vision in 3D Stereo type mapping or mobile devices. Figure 1 illustrates a typical system application diagram. All

the image sensing, signal processing, timing synchronization are handled by the PAC7640.

PAC7640 can be configured to produce different frame rate and should the system require multiple camera (through the

use of FSYNC), the image output from each camera can be configured to output at a delay to the Host.

DSP, ISP

MIPI TX, CSI2

DSP

(timing logic)

FSYNC

PAC7640LT

Host

Controller

Sensor,

Frontend

AEC/AGC

DSP, ISP

MIPI TX, CSI2

DSP

(timing logic)

FSYNC

PAC7640LT

Sensor,

Frontend

AEC/AGC

Multiple Sensors Application

Virtual

Channel 0

Virtual

Channel 1

DSP, ISP

MIPI TX, CSI2

DSP

(timing logic)

PAC7640LT

Host

Controller

Sensor,

Frontend

AEC/AGC

Single Sensor Application

Virtual

Channel 0

Figure 1. System Overview

1.2

Block Diagram

IMAGE SENSOR

DIGITAL

SIGNAL

PROCESSOR

I2C_SCL

I2C_SDA

LED CONTROL

VSS/VDGND/VNEG/VGND_MIPI

LED_STRB

2.8V POWER

VDD28

SERIAL

INTERFACE

VDD28_MIPI

1.5V POWER

VDD15

VDD15_MIPI

VDDIO

1.8V POWER

SYS_CLK

RESET

RESETB

DATA_TX_P

DATA_TX_N

CLK_TX_P

CLK_TX_N

FRAME SYNC

FSYNC

POWER

SUPPLY

AEC/AGC

ADC

IMAGE

SIGNAL

PROCESSOR

MIPI

INTERFACE

CONTROL REGISTER

CLOCK GEN

FOD

TRIGGER

FOR_TRI

Figure 2. Functional Block Diagram