Broadcom AEDR-9820 Bedienungsanleitung

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April 9, 2020

AEDR-9820 & 9830

Evaluation Board User Guide

User Guide

Version 1.0

AEDR-9820 & 9830 User Guide Evaluation Board User Guide

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The term “Broadcom” refers to Broadcom Limited and/or its subsidiaries. For more information, please visit

www.broadcom.com.

Broadcom reserves the right to make changes without further notice to any products or data herein to improve reliability,

function, or design. Information furnished by Broadcom is believed to be accurate and reliable. However, Broadcom does

not assume any liability arising out of the application or use of this information, nor the application or use of any product or

circuit described herein, neither does it convey any license under its patent rights nor the rights of others.

AEDR-9820 & 9830 User Guide Evaluation Board User Guide

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Table of Contents

1.0 Top and Bottom Views .......................................................................................................................................4

2.0 Select Options ....................................................................................................................................................6

2.1 Selection Table ....................................................................................................................................................6

3.0 Board Schematic & Pin Assignment.................................................................................................................7

3.1 Connector Assignment................................................................................................Error! Bookmark not defined.

3.1 Connector Assignment.........................................................................................................................................8

4.0 Code Wheel Drawing ........................................................................................................................................10

1.0 Top and Bottom Views

Figure 1 Bottom Side of the PCB

Figure 2 Top Side of the PCB (Left 318 LPI & Right 225 LPI)

NOTE Please remove the protective kapton tape covering the encoder ASIC before use.

Mounting slot

Mounting hole

Code wheel OD

alignment guide lines

The silk screen printed guide line on the PCB is to help in providing visual alignment of the code wheel edge (outer

diameter) for each of the different Rop (CPR) track. A sample diagram showing the position when encoder is aligned to

625 CPR track is as shown in Figure 3 below.

Figure 3 Bottom Side of the PCB

Figure 4 Sample Evaluation Board Mounting with reference to Code Wheel

2.0 Select Options

2.1 Selection Table

Table 1 Selection Table for 318 LPI AEDR-9830 Variant

Table 2 Selection Table for 225 LPI AEDR-9820 Variant

SEL1

SEL 2

INDEX

SEL

Interpolation

Factor

Index

Max output

frequency

CPR @ROP

7.95mm

CPR @ROP 11

Open

Low

Gated 90 deg

200 kHz

625

865

High

Gated 180 deg

Open

Ungated raw

Open

Low

Gated 90 deg

400 kHz

1250

1730

High

Gated 180 deg

Open

Gated 360 deg

High

Low

Gated 90 deg

800 kHz

2500

3460

High

Gated 180 deg

Open

Gated 360 deg

Low

Gated 90 deg

1.6 MHz

5000

6920

High

Gated 180 deg

Open

Gated 360 deg

High

Low

16X

Gated 90 deg

2.0 MHz

10000

13840

High

Gated 180 deg

Open

Gated 360 deg

Open

High

Analog (500mVpp)

Analog

200 kHz

Low

High

Analog 1Vpp

Ungated Digital

High / Low

Open

Analog 1Vpp

Analog

SEL1

SEL 2

INDEX

SEL

Interpolation

Factor

Index

Max output

frequency

CPR @ROP

4.6 mm

CPR @ROP 11

Open

Low

Gated 90 deg

200 kHz

256

612

High

Gated 180 deg

Open

Ungated raw

Open

Low

Gated 90 deg

400 kHz

512

1224

High

Gated 180 deg

Open

Gated 360 deg

High

Low

Gated 90 deg

800 kHz

1024

2448

High

Gated 180 deg

Open

Gated 360 deg

Low

Gated 90 deg

1.6 MHz

2048

4896

High

Gated 180 deg

Open

Gated 360 deg

High

Low

16X

Gated 90 deg

2.0 MHz

4096

9792

High

Gated 180 deg

Open

Gated 360 deg

Open

High

Analog (500mVpp)

Analog

200 kHz

Low

High

Analog 1Vpp

Ungated Digital

High / Low

Open

Analog 1Vpp

Analog

3.0 Board Schematic & Pin Assignment

Figure 5 Evaluation Board Schematic

3.1 Connector Assignment

Table 3 : Connector 1 Pin Assignment

Connector 1 (Top Side)

Label

INDEX_P/I+

INDEX_P/I-

VSSA/AGND

VDDA/VCC

CH_A/A+

CH_AB/A-

VDD

VSSD/DGND

CH_B/B+

CH_BB/B-

The finger design of Connector 1 is match to the following connectors:

1. EDAC, CONN EDGE DUAL FMALE 36POS 0.100, P/N# 395-036-520-202 or,

2. SULLINS, CONN EDGE DUAL FMALE 36POS 0.100, P/N# EBC18DREH

The use of the above mentioned card edge connector is not needed if necessary connections can be made via manual

soldering to the relevant card edge fingers.

Table 4 Connector 2 Pin Assignment

NOTE Please refer to Table 1 (AEDR-9830 318 LPI) or Table 2 (AEDR-9820 225 LPI) for the various

selection options available by changing the respective jumper position.

Connector 1 (Top Side)

Label

State

SEL1

VCC

AGND

OPEN

SEL2-

VCC

AGND

OPEN

INDEX_SEL

VCC

AGND

OPEN

4.0 Code Wheel Drawing

For AEDR-9830 evaluation board sample, the matching code wheel sample drawing is as shown in Figure 4 below.

Figure 6 318 LPI 4-track (CPR) code wheel drawing

For AEDR-9820 evaluation board sample, the matching code wheel sample drawing is as shown in Figure 5 below.

Figure 7 225 LPI 4-track (CPR) code wheel drawing

For the detailed drawing of the sample code wheel, please do request from regional FAE.

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