Crystal CDB5400 Скачать руководство пользователя страница 1

Preliminary Product Information

This document contains information for a new product.
Cirrus Logic reserves the right to modify this product without notice.

1

Copyright 

 Cirrus Logic, Inc. 1999

(All Rights Reserved)

Cirrus Logic, Inc.
Crystal Semiconductor Products Division
P.O. Box 17847, Austin, Texas 78760
(512) 445 7222   FAX: (512) 445 7581
http://www.crystal.com

VIN+

VIN-

IIN+

IIN-

CRYSTAL

4.096 MHz

REF

AGND

VOLTAGE

REFERENCE

AGND

CS5460

DGND

LEDs

EDIR

INT

SCLK

SDO

SDI

CS

80C51

Microcontroller

TEST

SWITCHES

CRYSTAL

20.0 MHz

RESET

CIRCUITRY

RS232

TRANS-
CEIVER

RS232

CONNECTOR

OUT

IN

EOUT

32k × 8

SRAM

VD+

Vu+

VA-

VA+

VREF

CDB5460

CDB5460 Evaluation Board and Software

Features

l

Direct Shunt Sensor and Current 
Transformer Interface

l

RS-232 Serial Communication with PC

l

On-board 80C51 Microcontroller

l

On-board Voltage Reference

l

Lab Windows/CVI

TM

 Evaluation Software

Register Setup & Chip Control
FFT Analysis
Time Domain Analysis
Noise Histogram Analysis

l

On-board Data SRAM

l

Integrated RS-232 Test Mode

General Description

The CDB5460 is an inexpensive tool designed to evalu-
ate the functionality and performance of the CS5460.
The CS5460 Data Sheet is required in conjunction with
the CDB5460 evaluation board.

The evaluation board includes an LT1019 voltage refer-
ence, an 80C51 microcontroller, an RS232 transceiver,
and firmware. The 8051 controls the serial communica-
tion between the evaluation board and the PC via the
firmware, enabling quick and easy access to all of the
CS5460’s registers and functions.

The CDB5460 includes software for Data Capture, Time
Domain Analysis, Histogram Analysis, and Frequency
Domain Analysis.

ORDERING INFORMATION

CDB5460 Evaluation Board

MAR ‘99

DS279DB1

Содержание CDB5400

Страница 1: ...ation with PC l On board 80C51 Microcontroller l On board Voltage Reference l Lab Windows CVITM Evaluation Software Register Setup Chip Control FFT Analysis Time Domain Analysis Noise Histogram Analys...

Страница 2: ...gic Inc has made best efforts to ensure that the information contained in this document is accurate and reliable However the information is subject to change without notice and is provided AS IS witho...

Страница 3: ...to the converter s voltage input via J12 VIN and J11 VIN Note a simple RC network filters the sensor s output to re duce any interference picked up by the input leads The 3 dB corner of the filter is...

Страница 4: ...TP35 4 3 2 1 HDR2X2 HDR2 AGND 1 2 3 4 HDR2X2 HDR1 TP34 R17 301 0 1 1UF C14 COG C2 4700PF AGND TP40 TP133 VIN VIN COG C32 01UF COG C33 01UF COG 01UF C34 AGND TP132 TP126 TP128 TP135 XOUT COG C35 01UF C...

Страница 5: ...4 2A3 2A2 2A1 2 G 1A4 1A3 1A2 1A1 1 G 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 SN74HCT244N U8 XTAL1 USDO UINT UEDIR UEOUT DGND JP1 UXTAL1 A A R30 10K R31 10K A Y8 Y7 Y6 Y5 Y4 Y3 Y2 Y1 GND VC...

Страница 6: ...TP26 TP27 TP28 TP29 TP23 TP24 TP15 TP38 TP18 TP19 TP20 TP21 P0 3 P0 5 P0 6 P0 7 P0 0 P0 1 P0 2 Y1 20 000 MHZ JP4 P3 2 P3 6 P3 7 UXTAL1 DGND C17 1UF DGND DGND VDDD P3 7 RD P3 6 WR P3 5 T1 P3 4 T0 P3 3...

Страница 7: ...4 3 2 1 DE9F_RA J8 DGND VDDD TP71 TP72 DGND 10UF C27 TP12 R14 10K 4 5 6 SN74HC00N U2 P2 6 9 10 8 U2 SN74HC00N P0 6 P0 5 P0 4 P0 3 P0 2 P0 1 P0 0 ALE DGND A0 A1 A2 A3 A4 A5 A6 A7 CSUSB P2 7 DGND 1UF C4...

Страница 8: ...P6KE6V8P Z3 AGND C5 47UF J3 CON_BANANA Z2 P6KE6V8P 47UF C6 1UF C12 1UF C13 CON_BANANA J5 AGND 1UF C10 DGND DGND AGND 6 5 4 3 2 1 HDR3X2 HDR3 AGND AGND AGND Z1 P6KE6V8P A DGND 10 R15 FERRITE_BEAD L2 CO...

Страница 9: ...CDB5460 evaluation board The CS5460 contains a programmable gain amplifier PGA two modulators two high rate filters an on chip refer ence and power calculation engine to compute En ergy VRMS IRMS and...

Страница 10: ...mmunication link between the microcontroller and a PC RS 232 Set to Normal Mode HDR8 Used to switch IIN on the CS5460 between J10 and AGND IIN Set to BNC J10 HDR9 Used to switch IIN on the CS5460 betw...

Страница 11: ...with Lab Win dows CVITM If the default directory is acceptable select OK and the Run Time EngineTM will be installed there 7 After the Run Time EngineTM is installed the user is prompted to enter the...

Страница 12: ...ting Setup Window or by pressing F2 on the keyboard In the Setup Window all of the CS5460 s registers are displayed in hexadecimal value and also de coded to provide easier access Refer to the CS5460...

Страница 13: ...performed before gain calibration to en sure accurate results Offset Calibrations 1 Ground the channel s you want to calibrate directly at the channel header s HDR1 and HDR2 for the voltage channel an...

Страница 14: ...pressed the CDB5460 will capture pulse rate data according to the values in the Integration Period and Periods to Average boxes After each integration period the Pulse Count and Frequency columns will...

Страница 15: ...icrocontroller will collect before sending data to the PC Each page consists of the number of samples collected and only the last page will be returned to the PC for processing This function is useful...

Страница 16: ...ted in the Data Collection Window by setting the Time Domain FFT Histogram selector to Histo gram Figure 12 BIN Displays the x axis value of the cursor on the Histogram MAGNITUDE Displays the y axis v...

Страница 17: ...or on the time domain display MAGNITUDE Displays current y position of the cursor on the time domain display MAXIMUM Indicator for the maximum value of the collected data set MINIMUM Indicator for the...

Страница 18: ...CDB5460 18 DS279DB1 Figure 7 Setup Window Figure 8 Conversion Window...

Страница 19: ...CDB5460 DS279DB1 19 Figure 9 Pulse Rate Output Window Figure 10 Time Domain Analysis...

Страница 20: ...CDB5460 20 DS279DB1 Figure 11 FFT Analysis Figure 12 Histogram Analysis...

Страница 21: ...pins of the device connected to the analog plane Place the analog digital plane split immediately ad jacent to the digital portion of the chip Figures 14 and 15 show the layout of the CDB5460 Note See...

Страница 22: ...CDB5460 22 DS279DB1 Figure 13 Silkscreen...

Страница 23: ...CDB5460 DS279DB1 23 Figure 14 Circuit Side...

Страница 24: ...CDB5460 24 DS279DB1 Figure 15 Solder Side...

Страница 25: ...Notes...

Страница 26: ......

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