Texas Instruments TLV320AIC12K Series User manual

TLV320AIC12KEVM,
TLV320AIC14KEVM
August 2005 Data Acquisition Products
User’s Guide
SLAU097A

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Copyright 2005, 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
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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 STATUTORY, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY
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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
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EXCEPT TO THE EXTENT OF THE INDEMNITY SET FORTH ABOVE, NEITHER PARTY SHALL BE LIABLE
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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
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Please read the EVM User’s Guide and, specifically, the EVM Warnings and Restrictions notice in the EVM
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Copyright ©2005, Texas Instruments Incorporated

EVM WARNINGS AND RESTRICTIONS
It is important to operate this EVM with a maximum input supply voltage not exceeding 4 V.
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
30°C. The EVM is designed to operate properly with certain components above 40°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:
Texas Instruments
Post Office Box 655303
Dallas, Texas 75265
Copyright ©2005, Texas Instruments Incorporated

How to Use This Manual
iii
Preface
Read This First
About This Manual
This users guide describes the operation and use of the TLV320AIC12K codec
family. A complete circuit description, schematic diagram, and bill of materials
are also included.
How to Use This Manual
This document contains the following chapters:
-Chapter 1—EVM Overview
-Chapter 2—Digital Interface
-Chapter 3—Analog Interface
-Chapter 4—EVM Operation
-Chapter 5—TLV320AIC12KEVM/14KEVM Bill of Materials
-Appendix A—TLV320AIC12KEVM/14KEVM Schematic
FCC Warning
This equipment is intended for use in a laboratory test environment only. It gen-
erates, 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 en-
vironments 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.

Related Documentation From Texas Instruments
iv
Related Documentation From Texas Instruments
To obtain a copy of any of the following TI documents, call the Texas
Instruments Literature Response Center at [phone] or the Product
Information Center (PIC) at [phone]. When ordering, identify this
booklet by its title and literature number. Updated documents can also be
obtained through our website at www.ti.com.
Data Sheets: Literature Number:
TLV320AIC12K SLWS115
TLV320AIC14K SLWS115

Contents
v
Contents
1 EVM Overview 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 Digital Interface 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1 Codec-to-Platform 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2 Jumper Options 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2.1 Stand-Alone Slave 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2.2 Single Master Only 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2.3 Master/Slave Cascade 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 Analog Interface 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4 EVM Operation 4-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5 TLV320AIC12KEVM/14KEVM Bill of Materials 5-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6 TLV320AIC12KEVM/14KEVM Schematic A-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Contents
vi
Figures
1−1 EVM 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4−1 EVM Captured Signals 4-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tables
2−1 Pinout for 40-Pin Connector 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2−2 Jumper Options 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2−3 Stand-Alone Slave Jumper Settings 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2−4 Single Master Only Jumper Settings 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2−5 Master/Slave Cascade Jumper Settings 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3−1 Analog Interface Connectors 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-1
EVM Overview
EVM Overview
This user’s guide supports the following devices:
-TLV320AIC12K
-TLV320AIC14K
This guide refers to the TLV320AIC12K only, since the remaining device
feature set is a subset of the TLV320AIC12K. Any important differences are
noted.
Figure 1−1. EVM
The EVM is split into two complementary halves as shown in Figure 1−1.
Slave CODEC
Master CODEC
Chapter 1

1-2

2-1
Digital Interface
Digital Interface
The digital signals required to operate this codec originate from the 40-pin
connector—J1. There are two methods to drive the digital interface:
-Create a custom interface between the codec EVM and the host system.
-Alternatively, if a TI DSK (DSP starter kit) is the host system, a develop-
ment platform is available from TI. This platform provides the additional
functions that the codec requires in a convenient form factor.
Topic Page
2.1 Codec-to-Platform 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2 Jumper Options 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 2

Codec-to-Platform
2-2
2.1 Codec-to-Platform
The TLV320AIC12K, and 14K mate with the development platform via a 40-pin
Samtec connector. The mating connector (Samtec part number,
TSM-120-01-T-DV-P) is used on the development platform to provide the
electrical connections necessary. Consult Samtec at www.samtec.com or
1−800−SAMTEC−9 for more information.
The pinout for the 40-pin connector is listed in Table 2−1.
Table 2−1. Pinout for 40-Pin Connector
Pin Number Signal Description
J1.1 MCLK Master clock
J1.2 DGND Digital ground
J1.3 SCLK Serial data clock
J1.4 DGND Digital ground
J1.5 DIN Data in
J1.6 DGND Digital ground
J1.7 DOUT Data out
J1.8 Reserved Reserved for future use
J1.9 FS Frame sync
J1.10 Reserved Reserved for future use
J1.11 CLKX Transmit clock
J1.12 Reserved Reserved for future use
J1.13 FSX Frame sync transmit
J1.14 Reserved Reserved for future use
J1.15 DX Data transmit
J1.16 DR Data receive
J1.17 RESET Global reset for all devices
J1.18 FSR Frame sync receive
J1.19 PWDN Global powerdown for all devices
J1.20 CLKR Receive clock
J1.21 CNTLb GPIO pin
J1.22 CNTLa GPIO pin
J1.23 STATb Status pin
J1.24 STATa Status pin
J1.25 3.3V_D Digital 3.3 V
J1.26 Reserved Reserved for future use
J1.27 3.3V_D Digital 3.3 V
J1.28 DGND Digital ground
J1.29 1.8V_D Digital 1.8 V
J1.30 DGND Digital ground
J1.31 1.8V_D Digital 1.8 V
J1.32 DGND Digital ground

Codec-to-Platform
2-3
Digital Interface
Table 2−1. Pinout for 40-Pin Connector (Continued)
Pin Number Signal Description
J1.33 3.3V_A_DRV Output driver supply 3.3 V
J1.34 AGND Analog ground
J1.35 3.3V_A_DRV Output driver supply 3.3 V
J1.36 AGND Analog ground
J1.37 3.3V_A Analog 3.3 V
J1.38 AGND Analog ground
J1.39 3.3V_A Analog 3.3 V
J1.40 AGND Analog ground
The development platform supports a number of functions that the codecs
require. These are:
-MCLK generation
-Manual reset generation
-Power options
Refer to the DSP −Codec Development Platform User’s Guide (SLAU090) for
details regarding the development platform.
Further descriptions regarding the operation of this EVM assumes that the
development platform is being used for all additional signals and power.

Jumper Options
2-4
2.2 Jumper Options
There are various jumpers on the board that can be configured in various
ways, depending upon the user’s requirements. Their functions are briefly
presented in Table 2−2:
Table 2−2. Jumper Options
Jumper Function
W1 Selects whether U2 is either a master or a slave codec
W2 Used along with W2 for correct polarity for FSD
W3 Manages FSD from the master. Either connecting FSD to next co-
dec or providing relevant polarity.
W4 Source for INM1b
W5 Source for INM1a
W6 Coupling for OUTP1b. Either directly or via capacitor.
W7 Coupling for OUTP1a. Either directly or via capacitor.
W8 Connects analog and digital ground together
W9 Gives user the option of disconnecting the 3.3-V driver ground
from the regular analog ground
W10 Use for odd number codec channels. Isolate the data from the co-
dec not participating in the chain.
P1.9–P1.10 Last FSD in the chain must be high
P1.11–P1.12 SCL must be high
P1.13–P1.14 SDA must be high
Since the EVM contains two codecs, there a variety of options available to the
user:
-Stand-alone slave codec
-Single master codec
-Master/slave cascade
Each of these options are discussed in the following sections.
2.2.1 Stand-Alone Slave
This configuration applies to EVM1 only. When a single codec is to be used
in slave mode, U2 is always the slave codec. Follow the jumper settings
detailed in Table 2−3 for this condition.

Jumper Options
2-5
Digital Interface
Table 2−3. Stand-Alone Slave Jumper Settings
Jumper 1−2 2−3
W1 Not inserted Inserted
W2 Inserted Not inserted
W3 Inserted Not inserted
W4 Not inserted Inserted
P1.9–P1.10 N/A N/A
P1.11–P1.12 Inserted Inserted
P1.13–P1.14 Inserted Inserted
2.2.2 Single Master Only
This configuration applies to EVM1 only. When a single codec is to be used
in master mode, U2 is always the master codec. Follow the jumper settings
detailed in Table 2−4 for this condition.
Table 2−4. Single Master Only Jumper Settings
Jumper 1−2 2−3
W2 Inserted Not inserted
W3 Inserted Not inserted
W4 Inserted Not inserted
P1.9–P1.10 N/A N/A
P1.11–P1.12 Inserted Inserted
P1.13–P1.14 Inserted Inserted
2.2.3 Master/Slave Cascade
This configuration applies to EVM1 only and is the factory-set shipping
condition. When both codecs are used, both U1 and U2 are active. In this
condition U2 is always the master codec, and U1 is always the slave codec.
Follow the jumper settings detailed in Table 2−5.
Table 2−5. Master/Slave Cascade Jumper Settings
Jumper 1−2 2−3
W1 Inserted Not inserted
W2 N/A N/A
W3 Not inserted Inserted
W4 Inserted Inserted
P1.9–P1.10 Inserted Inserted
P1.11–P1.12 Inserted Inserted
P1.13–P1.14 Inserted Inserted

3-1
Analog Interface
Analog Interface
Table 3−1 indicates the applicable connectors for each codec in the family. In
order to enable a wide range of sources and loads to be connected to the
codecs, screw terminals have been used wherever possible.
Table 3−1. Analog Interface Connectors
TLV320AIC12K TLV320AIC14K
Master Slave Master Slave
Input Sources
Microphone input J9 J8 J9 J8
INP1 J5 J3 J5 J3
INP2 J4 J2 J4 J2
Output Loads
OUTP1/OUTM1 600-Ωline output J7 J6 J7 J6
OUTP2/OUTP3 16-Ωdriver output J11 J10 NA
Chapter 3

3-2

4-1
EVM Operation
The EVM is shipped from the factory in master/slave cascade mode. To check
if the EVM is working properly, simply install the EVM onto the development
platform, and apply power to the DSK. The EVM should begin working
immediately.
In the default mode, the codecs recognize that there are two channels
connected in the master/slave configuration, consequently the resultant SCLK
and FS signals transmitted by the master codec adjust automatically based on
the available MCLK.
It is now possible to calculate what should be observed after power up by
calculating what FS and SCLK should be observed:
-FS
JIn this example, MCLK is generated by the development platform and
is equal to 100 MHz.
JFS = MCLK/16 ×m ×n ×p
JDefault values for m, n, and p are 16, 6, and 8 respectively
JFS = 100×106/16 ×16 ×6 ×8
JFS = 8138 Hz
-SCLK
JSCLK = 16 ×FS ×(number of devices) ×mode
JSCLK = 16 ×8138 ×2 ×1
JSCLK = 260 kHz
FS can be observed either directly at the FS pin of U1 or U2 (pin 4) or on the
development platform at TP9. SCLK can be observed easily at P1 pin 3 of the
EVM or on the development platform at TP8.
Chapter 4

4-2
The captured signals are shown in Figure 4−1.
Figure 4−1. EVM Captured Signals
FS
SCLK

5-1
TLV320AIC12K/14K Bill of Materials
TLV320AIC12K/14K Bill of Materials
The following table contains a complete bill of materials for the
TLV320AIC12K/14K family of EVMs. The schematic diagram is also provided
for reference. Contact the Product Information Center or e-mail
[email protected] for questions regarding this EVM.
Used Value Ref Des Description Vendor Part number
40.01 µFC29 C30 Capacitor 10000-pF 50-V
i YV
Panasonic ECJ-1VF1H103Z
µ
C31 C32
pp
ceramic Y5V 0603
12 0.1 µFC5 C6 C7 C8
C9 C10 C11
C12 C13 C14
C15 C16
Capacitor 0.1-µF 25-V
ceramic Y5V 0603
Panasonic ECJ-1VF1E104Z
16 0.1 µFC17 C18 C19
C20 C21 C22
C23 C24 C25
C26 C27 C28
Capacitor 0.1-µF 50-V
ceramic X7R 0805
Panasonic ECJ-2YB1H104K
41 µFC1 C2 C3 C4 Capacitor 1-µF 10-V ceramic
Y5V 0603
Panasonic ECJ-1VF1A105Z
510 kΩR1 R2 R3 R4
R5
Resistor 10-kΩ1/16-W 5%
0603 SMD
Panasonic ERJ-3GEYJ103V
210 kΩR6 R7 Resistor 10.0-kΩ1/8-W 1%
1206 SMD
Panasonic ERJ-8ENF1002V
2U1 U2 * IC CODEC 1CH 16-bit 3.3-V
30 TSSOP
Texas Instruments TLV320AIC12KIDBT
* Alternate IC CODEC 1CH 16-bit 3.3-V
30 TSSOP
Texas Instruments TLV320AIC14KIDBT
1TLV320AIC12 PWB Texas Instruments 6435621
1 J1 40-Pin SMT socket Samtec SSW-120-22-F-D-VS-K
1 P1 40-Pin SMT plug Samtec TSM-120-01-T-DV-P
6J2 J3 J4
J5 J6 J7
2 Terminal screw connector Lumberg KRMZ2
2J10 J11 3 Terminal screw connector Lumberg KRMZ3
2J8 J9 161−3504 Mouser 161-3504
3
W8 W9 W10
2 Position jumper
Samtec
TSW 102 07 L S
3W8 W9 W10 2 Position jumper Samtec TSW-102-07-L-S
7W1 W2 W3
W4 W5 W6
W7
3-Position jumper Samtec TSW-103-07-L-S
2See Assy
Dwg
1.000/4−40 Nylon hex thread
SP
Keystone Electronics 1902E
Chapter 5