TEXAS INSTRUMENTS SRC4192EVM Technical data
User’s Guide
June 2003
SBAU088
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Copyright 2003, Texas Instruments Incorporated
EVM IMPORTANT NOTICE
Texas Instruments (TI) provides the enclosed product(s) under the following conditions:
This evaluation kit being sold by TI is intended for use for ENGINEERING DEVELOPMENT OR EVALUATION
PURPOSES ONLY and is not considered by TI to be fit for commercial use. As such, the goods being provided
may not be complete in terms of required design-, marketing-, and/or manufacturing-related protective
considerations, including product safety measures typically found in the end product incorporating the goods.
As a prototype, this product does not fall within the scope of the European Union directive on electromagnetic
compatibility and therefore may not meet the technical requirements of the directive.
Should this evaluation kit not meet the specifications indicated in the EVM User’s Guide, the kit may be returned
within 30 days from the date of delivery for a full refund. THE FOREGOING WARRANTY IS THE EXCLUSIVE
WARRANTY MADE BY SELLER TO BUYER AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED,
IMPLIED, OR S TATUTORY, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY
PARTICULAR PURPOSE.
The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user
indemnifies TI from all claims arising from the handling or use of the goods. Please be aware that the products
received may not be regulatory compliant or agency certified (FCC, UL, CE, etc.). Due to the open construction
of the product, it is the user’s responsibility to take any and all appropriate precautions with regard to electrostatic
discharge.
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TO THE OTHER FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES.
TI currently deals with a variety of customers for products, and therefore our arrangement with the user is not
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TI assumes no liability for applications assistance, customer product design, software performance, or
infringement of patents or services described herein.
Please read the EVM User’s Guide and, specifically, the EVM Warnings and Restrictions notice in the EVM
User’s Guide prior to handling the product. This notice contains important safety information about temperatures
and voltages. For further safety concerns, please contact the TI application engineer.
Persons handling the product must have electronics training and observe good laboratory practice standards.
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machine, process, or combination in which such TI products or services might be or are used.
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Copyright 2003, Texas Instruments Incorporated
EVM WARNINGS AND RESTRICTIONS
It is important to operate this EVM within the specified input and output ranges described in
the EVM User’s Guide.
Exceeding the specified input range may cause unexpected operation and/or irreversible
damage to the EVM. If there are questions concerning the input range, please contact a TI
field representative prior to connecting the input power.
Applying loads outside of the specified output range may result in unintended operation and/or
possible permanent damage to the EVM. Please consult the EVM User’s Guide prior to
connecting any load to the EVM output. If there is uncertainty as to the load specification,
please contact a TI field representative.
During normal operation, some circuit components may have case temperatures greater than
60°C. The EVM is designed to operate properly with certain components above 60°C as long
as the input and output ranges are maintained. These components include but are not limited
to linear regulators, switching transistors, pass transistors, and current sense resistors. These
types of devices can be identified using the EVM schematic located in the EVM User’s Guide.
When placing measurement probes near these devices during operation, please be aware
that these devices may be very warm to the touch.
Mailing Address:
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Post Office Box 655303
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Copyright 2003, Texas Instruments Incorporated
About This Manual
Contents
Preface
This document provides the information needed to setup and operate the
SRC4192EVM evaluation module. For a more detailed description of the
SRC4190, SRC4192, or SRC4193 products, please refer to the product data
sheets available from the Texas Instruments web site at http://www.ti.com
Support documents are listed in the sections of this guide entitled Related Documentation from Texas Instruments and Additional Documentation.
.
How to Use This Manual
Throughout this document, the abbreviation EVM and the term evaluation
module are synonymous with the SRC4192EVM. The abbreviation
SRC419x refers to the SRC4190, SRC4192. and SRC4193 family of de-
vices.
Chapter 1 provides an overview of the SRC419x family of stereo asynchro-
nous sample rate converters. The SRC4192EVM block diagram and primary features are also discussed.
Chapter 2 provides general information regarding EVM handling and unpacking, absolute operating conditions, and the default switch and jumper
configuration.
Chapter 3 is the hardware setup guide for the EVM, providing all of the necessary information needed to configure the EVM switches and jumpers for
product evaluation.
Chapter 4 includes the EVM electrical schematic, PCB layout, and the Bill
of Materials.
Information About Cautions and Warnings
This book contains cautions.
This is an example of a caution statement.
A caution statement describes a situation that could potentially
damage your software or equipment.
Contents
iii
Contents
This is an example of a warning statement.
A warning statement describes a situation that could potentially
cause harm to you
.
The information in a caution or a warning is provided for your protection.
Please read each caution and warning carefully.
Related Documentation From Texas Instruments
The following documents provide information regarding Texas Instruments
integrated circuits used in the assembly of the SRC4192EVM. These documents are available from the TI web site. The last character of the literature
number corresponds to the document revision, which is current at the time
of the writing of this User’s Guide. Newer revisions may be available from
the TI web site at http://www.ti.com/
Response Center at (800) 477–8924 or the Product Information Center at
(972) 644–5580. When ordering, identify the booklet(s) by both title and
literature number.
or call the Texas Instruments Literature
Data sheets Literature number
SRC4192/4193 Data Sheet SBFS022
DIT4192 Data Sheet SBOS229
PLL1705 Data Sheet SLES046
REG1117 Data Sheet SBVS001
SN74AHC32 SCLS247G
SN74AHC244 SCLS226I
SN74AHC1G04 SCLS318L
SN74AHC1G14 SCLS321K
SN74ALVC125 Data Sheet SCES110E
SN74ALVC244 Data Sheet SCES188B
SN74ALVC245 Data Sheet SCES271B
SN74CBTLV3245A Data Sheet SCDS034J
SN74LVC04A Data Sheet SCAS281M
SN74LVC1G07 Data Sheet SCES296K
SN74LVC1G125 Data Sheet SCES223G
iv
Additional Documentation
The following documents provide information regarding selected non–TI
components, which are used in the assembly of the SRC4192EVM. These
documents are available from the corresponding manufacturers.
Document Manufacturer
CS8414 Data Sheet Cirrus Logic, http://www.cirrus.com
HCM49 Series Crystals Citizen, http://www.citizencrystal.com
SC937–02 Data Sheet Scientific Conversion
SC979–03 Data Sheet Scientific Conversion
If You Need Assistance
If you have questions regarding either the use of this evaluation module or
the information contained in the accompanying documentation, please contact the Texas Instruments Product Information Center at (972) 644–5580
or visit the TI web site at www.ti.com.
FCC Warning
Contents
http://www.scientificonversion.com
http://www.scientificonversion.com
Trademarks
This equipment is intended for use in a laboratory test environment only. It
generates, uses, and can radiate radio frequency energy and has not been
tested for compliance with the limits of computing devices pursuant to subpart J of part 15 of FCC rules, which are designed to provide reasonable
protection against radio frequency interference. Operation of this equipment in other environments may cause interference with radio communications, in which case the user at his own expense will be required to take
whatever measures may be required to correct this interference.
All trademarks are the property of their respective owners.
Contents
v
Contents
1 Introduction 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.1 The SRC4190, SRC4192, and SRC4193 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 EVM Block Diagram 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3 EVM Features 1-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 Getting Started 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1 Electrostatic Discharge Warning 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2 Absolute Maximum Operating Conditions 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3 Unpacking the EVM 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.4 Default Configuration 2-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 Setup Guide 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1 Power Supply Configuration 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2 Device Selection 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3 Selecting the Input & Output Port Modes 3-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4 Selecting the Input & Output Data Formats 3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.5 Selecting an Input Source and an Output Port 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.6 Selecting the SRC419x Reference Clock Source and Frequency 3-7. . . . . . . . . . . . . . . . . . . .
3.7 Selecting the DIT4192 Master Clock Source and Frequency 3-8. . . . . . . . . . . . . . . . . . . . . . . .
3.8 Miscellaneous Functions 3-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.9 Reset Functions 3-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4 Schematic, PCB Layout and Bill of Materials 4-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.1 Schematic 4-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.2 Component Layout 4-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.3 Bill of Materials 4-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Contents
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Contents
Figure 1–1. Functional Block Diagram for the SRC4192 and SRC4193 1-3. . . . . . . . . . . . . . . . . . . . . .
Figure 1–2. Functional Block Diagram for the SRC4192EVM 1-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–1. SRC4192EVM Schematic Diagram (page 1 of 2) 4-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–2. SRC4192EVM Schematic Diagram (page 2 of 2) 4-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–3. PCB Silkscreen, Top Layer 4-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–4. Top Side Layout (Component Side) 4-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–5. Bottom Side Layout (Solder Side) 4-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 2–1. Absolute Maximum Operating Conditions 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 2–2. Default Switch and Jumper Settings 2-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 3–1. SRC419x Input & Output Port Mode Selection 3-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 3–2. SRC419x Input & Output Port Data Format Configuration 3-4. . . . . . . . . . . . . . . . . . . . . . . .
Table 3–3. Digital Audio Receiver Output Data Format Configuration 3-5. . . . . . . . . . . . . . . . . . . . . . . .
Table 3–4. Digital Audio Transmitter Input Data Format Configuration 3-6. . . . . . . . . . . . . . . . . . . . . . .
Table 3–5. PLL Reference Clock Selection for the SRC419x 3-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 3–6. DIT4192 Master Clock Selection 3-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 3–7. Master Clock Source Selection 3-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 3–8. PLL Master Clock Selection for the DIT4192 3-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 3–9. Low Group Delay Configuration 3-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 3–10. Bypass Mode Configuration 3-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 3–11. Mute Function Configuration 3-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 3–12. DIT4192 Mono Mode Configuration 3-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 4–1. Bill of Materials 4-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
viii
Contents
Electrostatic Discharge Warning 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Contents
ix
Chapter 1
This chapter provides a brief technical overview for the SRC4190, SRC4192,
and SRC4193 asynchronous sample rate converters, as well as a general
description and feature list for the SRC4192EVM.
Topic Page
1.1 The SRC4190, SRC4192 and SRC4193 1-2. . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 EVM Block Diagram 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3 EVM Features 1-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Introduction
1-1
The SRC4190, SRC4192, and SRC4193
1.1 The SRC4190, SRC4192, and SRC4193
The SRC4192 and SRC4193 are stereo asynchronous sample rate converters designed for professional and broadcast audio applications. Operation at
input and output sampling frequencies up to 212kHz is supported, with an input/output sampling ratio range of 16:1 to 1:16. Excellent dynamic range and
THD+N are achieved by employing high performance, linear phase digital filtering with better than 140dB of image rejection. The SRC4190 is a lower–cost
version of the SRC4192 with reduced performance specifications, but it is
functionally equivalent to the SRC4192 and shares the same pin configuration.
The SRC4190 and SRC4192 are both stand–alone, pin–programmed devices, with control inputs for mode, data format, mute, bypass, and low group
delay functions. The SRC4193 includes a three–wire serial peripheral interface (SPI) port, which allows access to on–chip control registers for device
function configuration. The SPI port can be easily interfaced to microprocessors or digital signal processors with synchronous serial port interfaces.
All three devices offer filtering options, which allow for lower group delay processing. These options include a low group delay mode for the interpolation
function and a direct down–sampling mode (SRC4193 only) for the decimation
function.
The audio input and output ports support standard audio data formats, as well
as a TDM interface mode. Word lengths of 24–, 20–, 18–, and 16–bits are supported. Both ports may operate in Slave mode, deriving their word (LRCK) and
bit (BCK) clocks from external input and output devices. Alternatively, one port
may be operated in Master mode while the other remains in Slave mode. In
Master mode, the LRCK and BCK clocks are derived from the reference clock
(RCKI) input. The flexible configuration of the audio ports allows connection
to a wide variety of audio data converters, digital audio interface devices, and
digital signal processors.
A bypass mode is also included. This mode allows data to be passed directly
from the audio input port to the audio output port, bypassing the sample rate
converter function. The bypass option is useful for passing through encoded
or compressed audio data, or non–audio control and status data. The input
and output port clocks must be synchronous with one another in bypass mode.
A soft mute function is included in all three devices. A digital attenuation function is available only for the SRC4193. Both soft mute and digital attenuation
functions provide artifact free operation, while allowing muting or level adjustment of the audio output signal. The mute attenuation is typically –144dB for
the SRC4192 and SRC4193, and –128dB for the SRC4190. The SRC4193
digital attenuation function is adjustable from 0dB to –127.5dB in 0.5dB steps.
A block diagram of the SRC4192 and SRC4193 is shown in Figure 1–1. The
SRC4190 offers the same functionality as the SRC4192.
1-2
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