Texas Instruments PCM510 EVM-U Series User manual

User's Guide
SBAU190A–May 2011–Revised June 2011
PCM510xEVM-U
The PCM510x family of ICs are advanced segment, high-performance, hardware-programmable stereo
digital-to-analog converters (DACs). These devices employ internal line drivers together with an internal
PLL and BCLK reference, so that a serial clock signal (SCK) can be derived. The advanced segment
architecture enables excellent dynamic performance and improved tolerance to clock jitter, and the
2.1-VRMS ground-centered outputs eliminate the need for output dc blocking capacitors. The
PCM510xEVM-U is designed to support the PCM5100,PCM5101, and PCM5102 DACs. The
PCM510xEVM-U also employs the TAS1020B USB controller and the SRC4392 asynchronous sample
rate converter.
This user’s guide describes the operation of the PCM510xEVM-U and the Texas Instruments
CodecControl software. CodecControl provides a graphical user interface for supported TI audio codecs.
The software is compatible with Microsoft®Windows®XP, Vista, and Windows 7.
Contents
1 Introduction .................................................................................................................. 2
2 PCM510xEVM-U ............................................................................................................ 3
3 CodecControl Software ..................................................................................................... 9
4 Schematics and Bill of Materials ........................................................................................ 14
List of Figures
1 PCM510xEVM-U............................................................................................................ 3
2 PCM510xEVM-U Block Diagram.......................................................................................... 4
3 EVM Software Window ................................................................................................... 10
4 Command Dialog.......................................................................................................... 12
Microsoft, Windows are registered trademarks of Microsoft Corporation.
I2S, I2C are trademarks of NXP Semiconductors.
TOSLink is a trademark of Toshiba Corporation.
All other trademarks are the property of their respective owners.
1
SBAU190A–May 2011–Revised June 2011 PCM510xEVM-U
Submit Documentation Feedback Copyright ©2011, Texas Instruments Incorporated

Introduction www.ti.com
1 Introduction
CodecControl software is intended to facilitate user evaluation of TI audio codecs. It includes a wide range
of features, depending on the specific codec capabilities. The PCM510xEVM-U works together with the
CodecControl software. It connects to a PC via an available USB port and enumerates as a USB-class
audio device. Once configured with the CodecControl software, the EVM acts as a sound card that can
play back audio from the PC, depending on how the device is set up.
For a more detailed description of the PCM510x product line, refer to the product data sheet available
from the Texas Instruments web site at http://www.ti.com/.
Throughout this document, the abbreviation EVM and the term evaluation module are synonymous with
the PCM510xEVM-U. Unless otherwise noted, all references to the PCM510x indicate complete
functionality of all three related devices (PCM5100, PCM5101, and PCM5102).
1.1 Information About Cautions and Warnings
This document contains caution statements.
CAUTION
This is an example of a caution statement. A caution statement describes a
situation that could potentially damage your software or equipment.
The information in a caution or a warning is provided for your protection. Please read each caution and
warning carefully.
1.2 Related Documentation from Texas Instruments
The following document provides information regarding Texas Instruments integrated circuits used in the
assembly of the PCM510xEVM-U. These documents are available from the TI web site. The last character
of the literature number corresponds to the document revision that is current at the time of the writing of
this document. Newer revisions may be available from the TI web site at http://www.ti.com/.
Data Sheet Literature Number
PCM510x SLAS766
TAS1020B SLES025A
SRC4392 SBFS029C
1.3 Applications Questions
If you have questions regarding either the use of this evaluation module or other Texas Instruments
evaluation modules, post a question in the Audio Converters forum at http://e2e.ti.com. Include in the
subject heading the product in which you are interested.
1.4 FCC Warning
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 is required to
take whatever measures may be required to correct this interference.
2PCM510xEVM-U SBAU190A–May 2011–Revised June 2011
Submit Documentation Feedback
Copyright ©2011, Texas Instruments Incorporated

www.ti.com PCM510xEVM-U
2 PCM510xEVM-U
2.1 Electrostatic Discharge Warning
Many of the components on the PCM510xEVM-U are susceptible to damage by electrostatic discharge
(ESD). Customers are advised to observe proper ESD handling precautions when unpacking and handling
the EVM, including the use of a grounded wrist strap at an approved ESD workstation.
CAUTION
Failure to observe ESD handling procedures may result in damage to EVM
components.
2.2 Overview
The PCM510xEVM-U is an easy to use, USB-interface, multi-functional system allowing for digital
optical/SPDIF, line or external I2S™input with varying options for clock sources and clock frequencies.
Along with onboard sample rate conversion, this architecture allows for versatile use and testing of the
PCM510x family of parts. Figure 1 shows the PCM510xEVM-U with the jumper and switch locations
noted.
(1) The silkscreen label shown on the board may be different to indicate a specific device. Otherwise, the EVM is
identical to the one shown here.
Figure 1. PCM510xEVM-U
3
SBAU190A–May 2011–Revised June 2011 PCM510xEVM-U
Submit Documentation Feedback Copyright ©2011, Texas Instruments Incorporated

SW3 W5
TAS1020B MCLK (11.288 MHz)
EXT 3.3 V BNC MCLK
24.576 MHz OSC
RXCKO
MCLK Select
SRC4392 Sample Rate Converter
DIR DIT
SRC
RXCKO
Audio Serial Port BAudio Serial Port A
TAS1020B USB Microcontroller
USB I/F
I S
2I C/SPI
2
GPIO
Mini-USB
S/PDIF
(Optical)
S/PDIF
(RCA)
W3
Interface
Selection
PCM510x
2.1 V DAC
RMS
Analog
Outputs
PCM510xEVM-U www.ti.com
It should be noted that the PCM510xEVM-U is divided into two sections. The left half contains the digital
and USB interface, sample rate conversion, optical/SPDIF and RCA digital inputs, clock circuitry, and
reset logic. The right half contains the PCM510x device and the analog circuitry accompanying it. Note
that this half of the PCM510xEVM-U is the portion required on a potential customer application. The left
half is intended to emulate a wide variety of testing options and scenarios for the PCM510x device.
It should also be noted that the digital interface section, or left half of the PCM510xEVM-U, is a four-layer
design. However, the PCM510x device and analog circuitry, or right half of the EVM board, consists only
of two layers.
For the analog circuitry surrounding the PCM510x device, certain components can be removed at the cost
of higher performance. This configurability may allow for optimal ratio between board space and
performance. Components such as C1, C3, C7, and C11 can all be removed for additional board space.
The PCM510xEVM-U features:
•USB Interface
•Analog output
•TX output (J5)
•Optical/SPDIF input
•I2S input
•Hardware- and software-programmable options
•Digital audio interface test points
•Control interface test points
2.3 EVM Block Diagram
Figure 2 shows the block diagram for the PCM510xEVM-U.
Figure 2. PCM510xEVM-U Block Diagram
4PCM510xEVM-U SBAU190A–May 2011–Revised June 2011
Submit Documentation Feedback
Copyright ©2011, Texas Instruments Incorporated

www.ti.com PCM510xEVM-U
2.4 Jumpers, Connectors, Test Points, Switches
Table 1 summarizes the connectors, test points, jumpers, and switches on the PCM510xEVM-U.
Table 1. PCM510xEVM-U Headers, Test Points, Jumpers, and Switches
Connectors/Switch/Jumper/Test Point Description
Headers
W1 I2C/SPI Selection. Shunt Pins 1-2 for SPI, 2-3 for I2C Control
Mode (do not care for PCM510x)
W2 I2C/SPI Selection. Shunt Pins 1-2 for SPI, 2-3 for I2C Control
Mode (do not care for PCM510x)
W3 Interface Connection. Shunt respective headers to send digital
signals to PCM510x.
W4 AVDD Power. Shunt pins 1-2 or 3-4 for AVDD.
W5 MCLK/RXCKO Select
Test Points
TP1 GPIO4/GPIO4/MAST (do not care for PCM510x)
TP2 GPIO5/GPIO5/ATT0 (do not care for PCM510x)
TP3 MC/SCL/ATT1 (do not care for PCM510x)
TP4 MOSI/SDA/ATT2 (do not care for PCM510x)
TP5 GPIO3/GPIO3/AGNS (do not care for PCM510x)
TP6 GPIO2/ADR2/DOUT (do not care for PCM510x)
TP7 MODE1 (do not care for PCM510x)
TP8 MS/MODE2/MODE2 (do not care for PCM510x)
TP9 FLT
TP10 SCK
TP11 BCK
TP12 DIN
TP13 LRCK
TP14 FMT
TP15 XSMT
TP16 PCM510x Analog Output (R)
TP17 PCM510x Analog Output (L)
TP18 1.8 V
TP19 3.3 V
TP20 3.3 VA
TP21 GND
TP22 GND
TP23 GND
TP24 AGND
TP25 AGND
TP26 AGND
TP27 BCLK (TAS1020B)
TP28 WCLK (TAS1020B)
TP29 DIN (TAS1020B)
TP30 SCL (TAS1020B)
TP31 SDA(TAS1020B)
TP32 RESET
Jumpers
J1 PCM510x RCA Analog Output (R)
J2 PCM510x RCA Analog Output (L)
J3 Mini-USB Connection
5
SBAU190A–May 2011–Revised June 2011 PCM510xEVM-U
Submit Documentation Feedback Copyright ©2011, Texas Instruments Incorporated

PCM510xEVM-U www.ti.com
Table 1. PCM510xEVM-U Headers, Test Points, Jumpers, and Switches
(continued)
Connectors/Switch/Jumper/Test Point Description
J4 Optical S/PDIF Input
J5 Coaxial S/PDIF Input
J6 BNC External MCLK Input
Switches
SW1 EVM Reset
SW2 Select EVM Application
SW3 MCLK Select
LEDs
D2 RX Lock
D3 SRC Ready
2.5 Clock Circuitry
SW3 allows for MCLK selection from multiple sources. The PCM510xEVM-U contains an external BNC
jack, J6, as well as one programmed oscillator that provides a clock frequency of 24.576 MHz. The
TAS1020B also provides a MCLK output; by default, this clock is used as the master clock for the
PCM510xEVM-U. Depending on the application requirements, the SRC4392 is also able to derive a
received clock output (RCKO) output based on the input clock frequency, and this derived clock output
can be used as the MCLK input for the PCM510x as well. This option is enabled by setting a shunt in
position 1-2 (RXCKO) on the 3-pin jumper W5. If W5 has a shunt in position 2-3, then setting SW3
determines which MCLK source is used, as summarized in Table 2.
Table 2. SW3 Clock Selection
Setting A B C
Onboard MCLK from Low Low Low
TAS1020B
External MCLK 3.3-V High Low Low
BNC Input
24.576-MHz MCLK from High High High
PLL Y3
2.5.1 MCLK Source Matching
The SRC4392 is equipped with two audio serial data ports, each of which generates BCLK and LRCLK
signals. When the SRC4392 receives an S/PDIF input, it automatically derives the MCLK of the input,
which is sent to the RXCKO pin. Dividers are used to send the generated BLCK and LRCLK from the
audio ports (if they are in master mode). For certain use cases, the SRC4392 is set up so that these ports
are used. When routing through the audio serial ports on the SRC4392, it is important to use RXCKO as
the master clock source for the PCM510x. In order to ensure proper operation, the master clock source
must be synchronized to the bit and word clock supplied to the PCM510x. Therefore, the master clock
source for the PCM510x must also be replicated from the digital input source, which is why RXCKO must
be chosen. If the master clock source for the PCM510x is the onboard MCLK from the TAS1020B USB
controller, for example, then there is potential for synchronization mismatch between the master clock
supplied to the PCM510x and the bit and word clocks being supplied to the PCM510x. For use cases
routing through the SRC4392 audio serial ports, look to jumper W5 for selecting RXCKO as the master
clock source, as opposed to one of the options chosen by adjusting SW3. The SRC4392 product data
sheet has additional routing information.
The PCM510x devices contain an internal PLL and BCLK reference, so that the MCLK can be generated
internally. When using external I2S input directly into the W3 jumper, a MCLK can be derived form the
BCLK input. Refer to the PCM510x product data sheet for more details.
6PCM510xEVM-U SBAU190A–May 2011–Revised June 2011
Submit Documentation Feedback
Copyright ©2011, Texas Instruments Incorporated

www.ti.com PCM510xEVM-U
2.6 Use Cases
2.6.1 Scripts and Setup
While the PCM510x is only hardware programmable, the CodecControl software is still necessary to
properly configure the PCM510xEVM-U for different use cases, such as USB playback or optical/SPDIF
input to the PCM510x. Most of the I/O routing and clock frequency selection on the PCM510x evaluation
module is performed by the SRC4392. Section 2.6.2 and Section 2.6.3 are two example scripts that adjust
the SRC4392 registers accordingly, as well as set proper jumper configurations.
There are several use cases for which the PCM510xEVM-U can be used. Depending on whether it is USB
playback, or optical/SPDIF input, for example, there may need to be changes made in the scripts and
jumper configuration to accommodate these cases. Likewise, the shunts on header W3 may need to be
installed accordingly. Section 2.6.2 and Section 2.6.3 are some example use cases for the PCM5101 for
USB playback and optical/SPDIF input, respectively.
2.6.2 USB Playback
# The following script is used for playback via USB
# RESET RESET THIS IS MASTER RESET FOR SRC (48kHz)
# Page 0 = DEFAULT for Control
# Write to page 0
w E0 7F 00
# Register 01, Bit 7 = 1 resets to default
d 100
w E0 01 80
# Delay 0.1 sec to allow part to reset
d 100
# Register 01, Bit 7 = 0 for normal operation
w E0 01 00
d 100
# w E0 7F 00
# Register 01, Bit 7 = 1 resets to default
#----- Setup Port A ------#
# 24bit I2S, Master mode, DIR source, at mute
# Divide by 256, MCLK input source
# Unmute Port A Output
# power on port A and B
w E0 01 38
# set up port A as master, 24 bit I2S sourced from port B
w E0 03 19
# select MCLK as source at 256fs
w E0 04 01
# port B slave, 24 bit I2S
w E0 05 01
#----- Setup DIR ------#
#DIR Config 1
# Input source: RX2 - S/PDIF RCA (default)
#w E0 0D 01
# Input source: RX4 - S/PDIF optical, RX_MUX = RX1
w E0 0D 08
#DIR Config 2 - default
w E0 0E 01
#----- Setup DIT -----#
# DIT COnfig 1
# Port A data in, DIv 256
w E0 07 80
# DIT Config 2
# Default is to output to RCA
# Comment out RCA and uncomment Optical for optical outputs
#Output to RCA
# TX - ON, TX MUTE - ON, Optical disabled
#w E0 08 06
# TX Mute - OFF
7
SBAU190A–May 2011–Revised June 2011 PCM510xEVM-U
Submit Documentation Feedback Copyright ©2011, Texas Instruments Incorporated

PCM510xEVM-U www.ti.com
#w E0 08 04
#Output to Optical
# TX - OFF, TX MUTE - ON, optical disabled
w E0 08 03
# TX MUTE - OFF
w E0 08 01
#----- PLL Configuration -----#
# Set P=2, J=8, D=0
w E0 0F 22
w E0 10 1B
w E0 11 A3
# GPIO1 Config
# GPIO1 = RCVR non-audio data
w E0 1B 06
# GPIO2 Config
# GPIO2 = RCVR non-valid data
w E0 1C 07
# Power Status
# Disable RCVR (/PDRX) and Port B(/PDPB) power down and enable All Function power down
#w E0 01 14
#w E0 03 29
2.6.3 Optical/SPDIF Input via J4 (48 kHz, RXCKO Master Clock)
# RESET RESET THIS IS MASTER RESET FOR SRC
# SW3 (2-7) turned on, rest turned off
# Page 0 = DEFAULT for Control
# Write to page 0
w E0 7F 00
# Register 01, Bit 7 = 1 resets to default
d 100
w E0 01 80
# Delay 0.1 sec to allow part to reset
d 100
# Register 01, Bit 7 = 0 for normal operation
w E0 01 00
d 100
# w E0 7F 00
# Register 01, Bit 7 = 1 resets to default
#----- Setup Port A ------#
# 24bit I2S, Master mode, DIR source, at mute
# Divide by 256, MCLK input source
w E0 03 69
w E0 04 0B
#----- Setup DIR ------#
#DIR Config 1
# Input source: RX2 - S/PDIF RCA (default)
#w E0 0D 01
# Input source: RX4 - S/PDIF optical, RX_MUX = RX1
w E0 0D 08
#DIR Config 2 - default
w E0 0E 01
#----- Setup DIT -----#
# DIT COnfig 1
# Port A data in, DIv 256
w E0 07 80
# DIT Config 2
# Default is to output to RCA
# Commment out RCA and uncomment Optical for optical outputs
#Output to RCA
# TX - ON, TX MUTE - ON, Optical disabled
#w E0 08 06
# TX Mute - OFF
8PCM510xEVM-U SBAU190A–May 2011–Revised June 2011
Submit Documentation Feedback
Copyright ©2011, Texas Instruments Incorporated

www.ti.com CodecControl Software
#w E0 08 04
#Output to Optical
# TX - OFF, TX MUTE - ON, optical disabled
w E0 08 03
# TX MUTE - OFF
w E0 08 01
#----- PLL Configuration -----#
# Set P=2, J=8, D=0
w E0 0F 22
w E0 10 1B
w E0 11 A3
# GPIO1 Config
# GPIO1 = RCVR non-audio data
w E0 1B 06
# GPIO2 Config
# GPIO2 = RCVR non-valid data
w E0 1C 07
# Power Status
# Disable RCVR (/PDRX) and Port B(/PDPB) power down and enable All Function power down
#w E0 01 14
# Unmute Port A Output
w E0 03 29
# Disable All Function power down (all blocks set by local control)
w E0 01 3F
NOTE: For characteristic performance graphs, refer to the PCM510x data sheet.
3 CodecControl Software
This section explains how to use the CodecControl software together with the PCM510x device. While the
PCM510x is only hardware-programmable, the CodecControl software is required to properly configure the
PCM510xEVM-U for different use cases, such as USB playback or optical/SPDIF input to the device.
9
SBAU190A–May 2011–Revised June 2011 PCM510xEVM-U
Submit Documentation Feedback Copyright ©2011, Texas Instruments Incorporated

CodecControl Software www.ti.com
3.1 Control Software
The CodecControl software exposes most of the features of a supported TI audio codec EVM through an
intuitive graphical user interface.
NOTE: Before a PC running Windows can use the TI audio converter EVM as a sound card, the
EVM must be properly configured (sampling rate, audio routing, internal amplifier settings,
etc.) with the CodecControl software. This configuration occurs automatically once an EVM is
detected by the CodecControl software.
Figure 3 illustrates the CodecControl software with the PCM510xEVM-U window as an example of the
CodecControl software in operation.
Figure 3. EVM Software Window
10 PCM510xEVM-U SBAU190A–May 2011–Revised June 2011
Submit Documentation Feedback
Copyright ©2011, Texas Instruments Incorporated

www.ti.com CodecControl Software
3.2 Installation
Download the CodecControl software from the PCM510xEVM-U audio codec product folder and launch
the program. The file is a self-extracting archive that is downloaded in a compressed format.
The default target folder is:
C:\Program Files\Texas Instruments\CodecControl
Click the Unzip button to complete the installation. The CodecControl software is now available in the
target folder. The name of the executable is CodecControl.exe.
To launch the CodecControl software, navigate to the target folder and double-click the CodecControl.exe
file.
3.3 Concepts
The CodecControl software presents a block diagram view of a supported TI audio codec EVM, such as
that shown in Figure 3.
The block diagram consists of active objects that respond to user input (for example, switches or
amplifiers with variable gain that show a volume control when a user clicks on the component with a
mouse).
NOTE: Active Objects: Each active object changes color to red if the cursor is placed over the
object. Clicking the object triggers its function.
Some active objects are linked to control register(s) of the particular TI audio codec. The CodecControl
software updates the appropriate register(s) whenever an active object is triggered. If a register that is
linked to an active object is changed through other components (for example, the script interpreter or the
register inspector), the active object changes its state accordingly.
The CodecControl software automatically detects a supported TI audio codec EVM once it is connected to
an available USB port of the PC.
If no TI audio codec EVM is connected to the PC, the control software also supports an EVM simulation
mode, where it is possible to retrieve script commands based on user input within the block diagram.
Simulation mode is only available if no TI audio codec EVM is attached to the PC. Choose File->New
EVM simulation…and select an EVM from the list of supported TI audio codec EVMs.
3.4 Dialogs and Active Objects
The CodecControl software contains several dialog windows that provide access to additional features.
Most dialogs are linked to active objects and are opened by clicking on the active object.
Several dialogs are not linked to active objects and are opened instead using the View menu.
3.4.1 Initialization Script Dialog
The CodecControl software executes an initialization script when a supported TI audio codec is detected.
To show or edit the initialization script, choose View->Init Script…from the main window menu bar.
Click the Run button to run the script again.
11
SBAU190A–May 2011–Revised June 2011 PCM510xEVM-U
Submit Documentation Feedback Copyright ©2011, Texas Instruments Incorporated

CodecControl Software www.ti.com
3.4.2 Command Dialog
Open the command dialog (View->Command…) to write, edit, load, save, and run command scripts.
Command scripts are text files that contain commands to communicate with the TI audio codec. The
syntax is described in Section 3.5. The command dialog is shown in Figure 4.
Figure 4. Command Dialog
•The primary area of the command dialog is the command buffer (editable text) which contains the
command script. To run the command script, click the Run button
•The smaller, read-only text area on the right side of the command dialog displays control data read
from the TI audio codec. The Clear button clears the Read Data field.
•The one-line text edit field on the left bottom allows single command execution.
•The Record check box enables recording of commands generated by the control software.
12 PCM510xEVM-U SBAU190A–May 2011–Revised June 2011
Submit Documentation Feedback
Copyright ©2011, Texas Instruments Incorporated

www.ti.com CodecControl Software
3.4.3 Register Inspector
The register inspector dialog (View->Register Inspector…) gives access to all registers of the TI audio
codec. The register inspector displays the content of the connected TI audio codec device registers. To
trigger reading the content of one page, click the Refresh button.
•The addr column shows the address of the registers in decimal notation.
•The description column contains a description for each register. If the register has no function
assigned, it is declared Reserved.
•The data columns show the data of each register (one byte). The first data column uses decimal
notation, and the second uses hexadecimal notation. It is possible to change the register value by
clicking into one of the data fields and typing the new value (either decimal or hexadecimal).
•The numbered columns show the register content in binary notation. Read/write bits are shown solid
black or red; read-only bits are gray or dark red. Red numbers represent bits that recently changed. To
change a single writable bit, click on the bit and it will flip.
The coefficients may be used for a specific customer filter implementation. The format is compatible with
the TI audio codec that was detected by the CodecControl software.
NOTE: For the PCM510x, which are hardware programmable only, this feature is not used.
3.4.4 Firmware Update
TI may publish new firmware for TI audio codec EVMs. To program the new firmware to a TI audio codec
EVM, choose File->Update Firmware…and select the new firmware file.
The update process takes a few seconds (there is no progress bar) and is completed once the update
firmware dialog disappears. The EVM must be disconnected and reconnected to finish the firmware
update process.
3.5 Script Syntax
A script is a text file that contains data to send to a device.
Each line in a script file is one command. No provision is made for extending lines beyond one line, except
for the >command. A line is terminated by a carriage return.
The first character of a line is the command. Commands are:
rRead from the serial control bus
wWrite to the serial control bus
>Extend repeated write commands
#Comment
ISet interface bus to use
bBreak
dDelay
fWait for Flag
Command: r<address> <register> <length>
<address>is the device address in hexadecimal format. For example, 30 for device address 0x30.
<register>is the register in hexadecimal format that will be read from.
<length>is the number of bytes that will be read from <register>in auto-increment mode.
The result will be displayed in the right-side output window of the command interpreter dialog.
Command: w<address> <register> <data ...>
<address>is the device address in hexadecimal format. For example, 30 for device address 0x30.
<register>is the register in hexadecimal format that will be written to.
<data…> is a sequence of bytes that will be written to the <register>in auto-increment mode. Each
byte is in hexadecimal format.
13
SBAU190A–May 2011–Revised June 2011 PCM510xEVM-U
Submit Documentation Feedback Copyright ©2011, Texas Instruments Incorporated

Schematics and Bill of Materials www.ti.com
Command: > <data ...>
This command continues a write sequence in a new line.
<data…> is a sequence of bytes that will be written in auto-increment mode. Each byte is in
hexadecimal format.
Command: #[optional comment]
This command indicates a comment.
Command: I<interface>
<interface>is i2c for I2C™or spi for SPI
Command: b[optional comment]
[optional comment] is a string of characters. The command interpreter will show a modal dialog with
the optional comment. Script execution will resume once the dialog is closed.
Command: d<time>
This command suspends script execution by at least <time>milliseconds.
Command: f<address> <register> <mask>[optional timeout]
This commands suspends script execution until the value read from <address> <register>matches
<mask>
<address>is the device address in hexadecimal format. For example, 30 for device address 0x30.
<register>is the register in hexadecimal format that will be read from.
<mask>is a 8-bit binary format mask that is compared with the data from the device. Each bit can be
0, 1, or X.
For example: <mask>= 010XX01X tests, if the data from the device has D7 = 0, D6 = 1, D5 = 0, D4 =
don’t care, D3 = don’t care, D2 = 0, D1 = 1, D0 = don’t care.
[optional timeout] specifies how long (milliseconds) the command interpreter will poll the device if the
data do not match the <mask>
4 Schematics and Bill of Materials
The schematics for the PCM510xEVM-U are appended to this user guide. Table 3 lists the bill of materials
(BOM).
Table 3. PCM510xEVM-U Bill of Materials
Item
No Count RefDes Description Part Number MFR
1 1 U1 24-Bit 384 kHz Audio Stereo DAC TSSOP20-PW ROHS PCM5101PW Texas Instruments
2 1 U6 USB Streaming Controller TQFP48-PFB ROHS TAS1020BPFB Texas Instruments
Two-Channel, Asynchronous, Sample Rate Converter w/Dig Audio
3 1 U12 SRC4392IPFBR Texas Instruments
Rec/Xmtr ROHS
Voltage Regulator, 1.8 V 400 mA LDO Cap free NMOS
4 1 U2 TPS73618DBVT Texas Instruments
SOT23-DBV5 ROHS
Voltage Regulator, 3.3 V 400 mA LDO Cap free NMOS
5 1 U3 TPS73633DBVT Texas Instruments
SOT23-DBV5 ROHS
Adjustable, Active High, Constant-Current, Current-Limited
6 1 U4 TPS2553DBV Texas Instruments
Power-Distribution Switch
7 3 U8, U9, U11 Single Bus Buffer Gate with 3-State Output ROHS SN74LVC1G125DBVR Texas Instruments
8 1 U10 Dual Inverter Gate SN74LVC2G04DBV Texas Instruments
9 1 U7 3-Line to 8-Line Decoders/ Demultiplexers SN74LVC138APW Texas Instruments
10 1 U5 24FC512-I/SM Microchip
512k I2C Serial EEPROM SOIC8-SM ROHS
11 1 J4 TOSLink™Receiver 3.3 V 15MB SHUTTER ROHS TORX147PL(F,T) Toshiba
12 1 D1 LED, Yellow 2.0 V SMD0805 ROHS SML-LXT0805YW-TR LUMEX Opto
13 2 D2, D3 LED, Green 2.0 V SMD0805 ROHS SML-LXT0805GW-TR LUMEX Opto
SIT8002AI-13-33E-
14 1 Y1 Oscillator SMT 6 MHz 3.3 V OUT-ENABLE ROHS SiTime
6.00000T
15 1 Y3 Oscillator SMT 3.3 V SM77H Series 24.576MHz ROHS SM7745HSV-24.576M Pletronics
16 1 Y2 Oscillator SMT 3.3 V SM77H Series 22.5792MHz ROHS SM7745HSV-22.5792M Pletronics
14 PCM510xEVM-U SBAU190A–May 2011–Revised June 2011
Submit Documentation Feedback
Copyright ©2011, Texas Instruments Incorporated

www.ti.com Schematics and Bill of Materials
Table 3. PCM510xEVM-U Bill of Materials (continued)
Item
No Count RefDes Description Part Number MFR
17 2 C26, C27 Capacitor, SMD0603 Ceramic, 47PFD 50V 5% NPO ROHS ECJ-1VC1H470J Panasonic
C15, C18, C20,
C22, C25, C28,
C30,C31, C32,
18 20 C33, C35, C36, Capacitor, SMD0603 Ceramic, 0.1 μFD 50V 10% X7R ROHS C1608X7R1H104K TDK
C37, C41, C43,
C44, C46, C47,
C48, C49
19 2 C34, C45 Capacitor, SMD0603 Ceramic, 10 μFD 6.3V 20% X5R ROHS ECJ-1VB0J106M Panasonic
20 1 C29 Capacitor, SMD0603 Ceramic, 1.0 μFD 16V 10% X7R ROHS C1608X7R1C105K TDK
21 1 C39 Capacitor, SMD0603 Ceramic, 0.01 μFD 25V 5% X7R ROHS 06031C103JAT2A AVX
22 3 C38, C40, C42 Capacitor, SMD0805 Ceramic, 22 μFD 6.3V 20% X5R ROHS C2012X5R0J226M TDK
23 1 C24 Capacitor, SMD0603 Ceramic, 1000 pFD 50V 5% COG ROHS C1608C0G1H102J TDK
24 1 C23 Capacitor, SMD0805 Ceramic, 100 pFD 50V 5% C0G ROHS GRM2165C1H101JA01D Murata
C14, C16, C17,
25 4 Capacitor, SMD0805 Ceramic, 10 μFD 16V 10% X5R ROHS GRM21BR61C106KE15L Murata
C19
26 2 C8, C9 Capacitor, SMD0805 Ceramic, 2.2 μFD 25V 10% X7R ROHS GCM21BR71E225KA73L Murata
27 4 C2, C4, C6, C10 Capacitor, SMD0805 Ceramic, 0.1 μFD 100V 10% X7R ROHS C2012X7R2A104K TDK
28 2 C12, C13 Capacitor, SMD0603 Ceramic, 0.022 μFD 50V 10% X7R ROHS GRM188R71H223KA01D Murata
29 1 C21 Capacitor, Alum Elec KZ Radial 100 μFD 50V 20% ROHS UKZ1E101MPM Nichicon
30 1 R0 Resistor, SMT 060310 kΩ, 5%, 1/10W, ROHS ERJ-3GEYJ103V Panasonic
31 1 R11 Resistor, SMD0603 1.50 kΩ1% Thick Film 1/10W ROHS ERJ-3EKF1501V Panasonic
32 2 R6, R14 Resistor, SMD0603 100 kΩ1% Thick Film 1/10W ROHS ERJ-3EKF1003V Panasonic
R3, R4, R5, R16,
33 8 R17, R20, R21, Resistor, SMD0603 10 kΩ5% 1/10W ROHS ERJ-3GEYJ103V Panasonic
R22
34 1 R15 Resistor, SMD0603 Thick Film 649 Ω1% 1/10W ROHS RC0603FR-07649RL Yageo
35 2 R12, R13 Resistor, SMD0603 27.4 Ω1% 1/10W ROHS ERJ-3EKF27R4V Panasonic
36 2 R8, R9 Resistor, SMD0603 2.7 kΩ5% 1/10W ROHS ERJ-3GEYJ272V Panasonic
37 1 R34 Resistor, SMD0603 4.7 kΩ5% 1/10W ROHS ERJ-3GEYJ472V Panasonic
R18, R23, R25,
38 5 Resistor, SMT1206 10.0 Ω1% 1/4W ROHS ERJ-8ENF10R0 Panasonic
R30, R31
39 2 R32, R33 Resistor, SMD0603 22.1 Ω1% 1/10W ROHS CRCW060322R1FKEA Vishay
40 2 R19, R24 Resistor, SMT, 0603, 5%, 1/10W, 75 ERJ-3GSYJ750 Panasonic
R26, R27, R28,
41 4 Resistor, SMT, 0603, 5%, 1/10W, 33 ERJ-3GSYJ330 Panasonic
R29
42 1 R10 Resistor, SMD0603 3.09K Ω1% Thick Film 1/10W ROHS ERJ-3EKF3091V Panasonic
43 2 R1, R2 Resistor, SMD0603 100 Ω1/10W 1% ROHS CRCW0603100RFKEA Vishay
44 1 R7 Resistor, SMD1206 0.0 Ω5% 1/4W ROHS ERJ-8GEY0R00V Panasonic
45 3 W1, W2, W5 Header Thru Male 3-Pin 100LS Gold ROHS PBC03SAAN Sullins
46 1 W3 Header Thru Male 2X15 100LS Gold ROHS PBC15DAAN Sullins
47 1 W4 Header Thru Male 2X2-Pin 100LS Gold ROHS PBC02DAAN Sullins
48 1 J3 Jack USB MiniB SMT-RA 5-Pin ROHS UX60-MB-5ST HiRose
49 1 J5 RCA Jack Thru RA-Female Orange ROHS RCJ-047 CUI Stack
50 1 J6 Jack BNC Square 50 ΩROHS 5227699-2 Tyco Electronics
51 1 J1 RCA Jack Thru RA-Female Red ROHS RCJ-042 CUI Stack
52 1 J2 RCA Jack Thru RA-Female White ROHS RCJ-043 CUI Stack
TP21, TP22,
53 6 TP23, TP24, PC Testpoint, Black 063 Hole ROHS 5011 Keystone
TP25, TP26
54 3 TP18, TP19, TP20 PC Testpoint, Red, ROHS 5000 Keystone
15
SBAU190A–May 2011–Revised June 2011 PCM510xEVM-U
Submit Documentation Feedback Copyright ©2011, Texas Instruments Incorporated

Schematics and Bill of Materials www.ti.com
Table 3. PCM510xEVM-U Bill of Materials (continued)
Item
No Count RefDes Description Part Number MFR
TP1, TP2, TP3,
TP4, TP5, TP6,
TP7, TP8, TP9,
TP10, TP11,
TP12, TP13,
55 23 PC Testpoint, White, ROHS 5002 Keystone
TP14, TP15,
TP16, TP17,
TP27, TP28,
TP29, TP30,
TP31, TP32
56 2 SW1, SW2 Switch MOM 240 G SMD 6 x 3.5 mm ROHS EVQ-5PN04K Panasonic
57 1 SW3 Switch SMT DIP 8 4-Position ROHS TDA04H0SB1 CK Components
Per Test
58 Shunt, Black AU Flash 0.100 LS SPC02SYAN Sullins
Procedure
59 4 Hex Nut, 4-40, Zinc/Steel HNZ440 Building Fasteners
60 4 4-40 Screw, Steel 0.250 in PMS 440 0025 PH Building Fasteners
61 4 Standoff, 4-40, 0.5 in, 3/16 in dia Alum RND F-F 2027 Keystone
NOT USED
62 4 C1, C3, C7, C11 Capacitor, SMD ELECT 10ufd 16V 20% VS-B ROHS EEE1CA100SR Panasonic
16 PCM510xEVM-U SBAU190A–May 2011–Revised June 2011
Submit Documentation Feedback
Copyright ©2011, Texas Instruments Incorporated

www.ti.com Revision History
Revision History
Changes from Original (May, 2011) to A Revision .......................................................................................................... Page
•Updated schematics .................................................................................................................... 16
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
17
SBAU190A–May 2011–Revised June 2011 Revision History
Submit Documentation Feedback Copyright ©2011, Texas Instruments Incorporated

:DAELNGISED :#EGDE
:ETAD
:EMANELIF
:VERHCS
:VERBCP
:FO:TEEHS
:YBNWARD
VERHCS
VERBCP
TEEHS
YBNWARD
FOETAD
EMANELIF
:OFNIEGAP
DAELNGISED #EGDE
1
2
3
1W
4OIPG
5OIPG
CM
ISOM
3OIPG
6OIPG
KCS
2OIPG
1EDOM
2W
3
2
1
WPXX15MCP
1U
82
72
62
52
42
32
22
12
02
91
81
71
61
4151
31
21
11
01
9
8
7
6
5
4
3
2
1
9C
V52/dfu2.2 5080
8C
V52/dfu2.2 5080
2C
V001/dfu1.0
5080 01C
V001/dfu1.0
5080
11C
PND
V61/dfu01 B-SV
+
4C
V001/dfu1.0
5080
1C
PND
V61/dfu01 B-SV
+
3C
PND
B-SV V61/dfu01
+
5080
V001/dfu1.0
6C
B-SV V61/dfu01
PND
7C
+
61PT
etihW
71PT
etihW
OSIM
CRS_KCRL
CRS_NID
CRS_KCB
TMSX
3W
0392
8272
6252
4232
2212
0291
8171
6151
4131
2111
019
87
65
43
21
ADS
LCS
2EDOM
AV3.3+
AV3.3+
AV3.3+
etihW
1PT
etihW
2PT
etihW
3PT
etihW
4PT
etihW
5PT
6PT
etihW
etihW
7PT
etihW
8PT
etihW
9PT
etihW
01PT
etihW
11PT
etihW
21PT
etihW
31PT
etihW
41PT
etihW
51PT
DNGA
DNGA
DNGA
DNGA
DNGA
DNGA
DNGA
1J
DER F-ARACR
langiS
2
1
Shield
2J
etihW F-ARACR
langiS
2
1
Shield
1R
074
3060
2R
074
3060
21C
V05/dfp0022 3060
31C
V05/dfp0022 3060
0R
K01
3060
NIPON
NIPON
NIPON
NIPON
NIPON
NIPON
NIPON
NIPON
2215MCP2/1/0015MCP
)SNOITPOTUD(XX15MCP
U-MVEXX15MCP
XX15MCP
TS OIGGELEVE
0102,60TCO
A
A
51
LS
AVER_MVE_BSU_XX15MCPA/N
TMSX
TMF/1RDA/OSIM
KCRL
NID
KCB
KCS
TLF/6OIPG/6OIPG
2EDOM/2EDOM/SM
1EDOM
TUOD/2RDA/2OIPG
SNGA/3OIPG/3OIPG
TSAM/4OIPG/4OIPG
0TTA/5OIPG/5OIPG
1TTA/LCS/CM
2TTA/ADS/ISOM
:ETON
.)TUD(TSETREDNUSECIVEDELPITLUMSTROPPUSDRAOBSIHT
.DESUNUEBLLIWSDAPNIPEMOS,SNIPREWEFHTIWSECIVEDHTIWDESUNEHW
.NOITACOLREPORPNI1#NIPHTIWSECIVEDLLANGILA
DDVD
DNGD
OODL
TMSX
TMF
KCRL
NID
KCB
KCS
TLF
DDVPC
PPAC
DNGPC
MPAC
GENV
LTUO
RTUO
DDVA
DNGA
11
21
31
41
51
61
71
81
01
9
8
7
6
5
4
3
1
2
02
91
11
21
31
41
81
71
61
4OIPG51
5OIPG
CM
ISOM
3OIPG
2OIPG
1EDOM
SM
DDVD
DNGD
OODL
TMSX
OSIM
KCRL
NID
KCB
KCS
6OIPG
DDVPC
PPAC
DNGPC
MPAC
GENV
LTUO
RTUO
DDVA
DNGA
91
02
12
22
32
42
52
62
01
9
8
7
6
5
4
3
1
2
82
7272
82
2
1
3
4
5
6
7
8
9
01
62
52
42
32
22
12
02
91
DNGA
DDVA
RTUO
LTUO
GENV
MPAC
DNGPC
PPAC
DDVPC
6OIPG
KCS
KCB
NID
KCRL
1RDA
TMSX
OODL
DNGD
DDVD
2EDOM
1EDOM
2RDA
3OIPG
ADS
LCS
5O
IPG
4OIPG51
61
71
81
41
31
21
11
2215MCP
72
82
2
1
3
4
5
6
7
8
9
01
62
52
42
32
22
12
02
91
DNGA
DDVA
RTUO
LTUO
GENV
MPAC
DNGPC
PPAC
DDVPC
TLF
KCS
KCB
NID
KCRL
TMF
TMSX
OODL
DNGD
DDVD
2EDOM
1EDOM
TUOD
SNGA
2TTA
1TTA
0TTA
TSAM51
61
71
81
41
31
21
11
2215MCP
EDOMWHEDOMC2IEDOMIPS
15MCP
NWOHSSEDOM)WH/C2I/IPS(
DEMP DEMP DEMP DEMP

DESIGN LEAD: EDGE #:
DATE:
FILENAME:
SCH REV:
PCB REV:
SHEET: OF:
DRAWN BY:
SCH REV
PCB REV
SHEET
DRAWN BY
OFDATE
FILENAME
TI
PAGE INFO:
DESIGN LEAD EDGE #
SCH REV
PCB REV
SHEET
DRAWN BY
OFDATE
FILENAME
TI
PAGE INFO:
DESIGN LEAD EDGE #
TQFP48-PFB
2220191817151413
31
30
29
27
26
25
2423
32
34
35
36
373839
40
21
8
4
28
16
33
42 41
12
11
10
9
7
6
5
434445
2
1
48
3
4647
R11
1.50K
0603
C26
47pfd/50v
0603
C27
47pfd/50v
0603
R14
100K
0603
D1
Yellow
0805
Y1
1
23
4
mfg: SiTIME
p/n: SIT8002AI-13-33E-6.00000T
6MHz/3.3V
SMT-8002
Vcc
OUT
OE
GND
C32
0.1ufd/50V
0603
R16
10K
0603
R15
649
0603
R12
27.4
0603
R13
27.4
0603
R8
2.7K/5%
0603 R9
2.7K/5%
0603
J3
1
2
3
4
5
6
7
8
9
10
11
mfg: HIROSE
p/n: H2959CT
USB MINIB
Data-
5v
ID_NC
GND
Data+
Case
Case
Case
Case
NC
NC
mfg: MICROCHIP
p/n: 24FC512-I/SM
U5
1
2
3
4 5
6
7
8
512K
SOIC8-SM
MC
MOSI
MODE1
C33
0.1ufd/50V
0603
R17
10K
0603
MODE2
MISO
/RESET
C29
1.0ufd/16V
0603
EVQ-5PN04K
SW2
21
EVQ-5PN04K
SW1
21
C30
0.1ufd/50V
0603
C28
0.1ufd/50V
0603
C25
0.1ufd/50V
0603 C31
0.1ufd/50V
0603
C24
1000pfd/50V
0603
C23
100pfd/50V
0805
R10
3.09K
0603
+5V
GND GNDGNDGND
C18
0.1ufd/50V
0603
C19
10ufd/16V
0805
C17
10ufd/16V
0805
GNDGNDGND
C15
0.1ufd/50V
0603
C14
10ufd/16V
0805
+1.8V
GND
C16
10ufd/16V
0805
+5V
+5V
+5V +3.3V
R3
10K
0603
+5V
R4
10K
0603
1
2
3 4
5
U2
TPS73618DBVT
1.8V/400mA
SOT230DBV5
1
2
3 4
5
TPS73633DBVT
U3
3.3V/400mA
SOT230DBV5
TP21
Black
TP22
Black
TP24
Black
TP25
Black
TP26
Black
TP23
Black
0.5in
HW1
0.5in
0.5in
HW2
0.5in
0.5in
HW3
0.5in
0.5in
HW4
0.5in
+3.3V
+3.3V
+3.3V
+3.3V
+3.3V
+3.3V
+3.3V
+3.3V
+3.3V
+3.3V
+3.3V
GND GND GND GND GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
TP18
RED
TP19
RED
C22
0.1ufd/50V
0603
GPIO4
GPIO5
GPIO3
GPIO6
GPIO2
XSMT
TPS2553DBVR
U4
6
5
43
2
1
SOT23-DBV6
+3.3VA
GND
R5
10K
0603
GND
GND
R6
100K
0603
+3.3V
C20
0.1ufd/50V
0603
TP20
RED
AGND
1 2
3 4
W4
C21
100ufd/50V
KZ
+
R7
0.0
1206
AGND
+3.3V USB INPUT
+3.3VA OUTPUT
+5.0V USB INPUT
+3.3V OUTPUT
STANDOFFS
POWER
+5.0V USB INPUT
+1.8V OUTPUT
USB CONTROLER
TAS1020B
GPLED0
EEPROM
USB INPUT
GPIO0
TAS1020BPFB
RESET
N/A
PCM51XXEVM-U
POWER & USB CONTROLLER
STEVE LEGGIO
OCT 06, 2010
A
A
2 5
SL
PCM51XX_USB_EVM_REVA
(/SS for TAS-AIC)
(SPI_SELECT for TAS-AIC)
(SCKL for TAS-AIC)
DUT CURRENT
MEASUREMENT
GROUND

DESIGN LEAD: EDGE #:
DATE:
FILENAME:
SCH REV:
PCB REV:
SHEET: OF:
DRAWN BY:
SCH REV
PCB REV
SHEET
DRAWN BY
OFDATE
FILENAME
TIPAGE INFO:
DESIGN LEAD EDGE #
SCH REV
PCB REV
SHEET
DRAWN BY
OFDATE
FILENAME
TIPAGE INFO:
DESIGN LEAD EDGE #
13
1
2
3
4
5
6
7
8
9
10
11
12
14 15 16 17 18 19 20 21 22 23 24
25
26
27
28
29
30
33
34
35
36
37 38 39 40 41 42 43 44 45 46 47 48
U12
TQFP48-PFB
SRC4392IPFBR 31
32
C48
0.1ufd/50V
0603
1
2
3
J4
TORX147PL(F,T)
SHIELD
GND
Vcc
OUT
C35
0.1ufd/50V
0603
C44
0.1ufd/50V
0603
C47
0.1ufd/50V
0603
D3
Green
0805
R34
4.7K
0603
R18
10,1/4W
1206 C34
10ufd/6.3V
0603
R31
10,1/4W
1206 C45
10ufd/6.3V
0603
R32
22.1
0603
SCL
SDA
/RESET
C36
0.1ufd/50V
0603
C37
0.1ufd/50V
0603
R19
RES,SMT,0603
75
BCLK
WCLK
J5
Orange
RCA RA-F
Signal
2
1
Shield
DIN_SRC
LRCK_SRC
BCK_SRC
D2
Green
0805
C49
0.1ufd/50V
0603
C46
0.1ufd/50V
0603
DIN
R33
22.1
0603
C39
0.01ufd/25V
0603
4
32
1
Y3
SM77H
SM7745HSV-24.576M
Vcc
OUT
OE
GND
4
32
1
Y2
SM77H
SM7745HSV-22.5792M
Vcc
OUT
OE
GND
J6
R24
RES,SMT,0603
75
C38
22ufd/6.3V
0805
R23
10,1/4W
1206
R30
10,1/4W
1206
C42
22ufd/6.3V
0805
C43
0.1ufd/50V
0603
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND GND GND GND GND
GND
GND
+1.8V +3.3V
+3.3V
+3.3V
+3.3V
+3.3V
+3.3V
+3.3V
+3.3V
+3.3V
+3.3V
TP27
White
TP28
White
TP29
White
TP31
White
TP30
White
TP32
White
R29
RES,SMT,0603
33ohms
R28
RES,SMT,0603
33ohms
1
2
3 4
5
U11
SOT23-DBV5
SN74LVC1G125DBVR
1 6
3 4
2 5
U10
IC,SMT,SOT23-6
SN74LVC2G04DBV
1
2
3
4
5
6
7
8 9
10
11
12
13
14
15
16
U7
IC,SMT,TSSOP-16
SN74LVC138APW
GND
GND
GND
R25
10,1/4W
1206
C40
22ufd/6.3V
0805
C41
0.1ufd/50V
0603
+3.3V
GND
GND
MCLK
8
7
6
54
3
2
1
SW3
TDA04H0SB1
GND
R22
10K
0603
R21
10K
0603
R20
10K
0603
+3.3V
R26
RES,SMT,0603
33ohms
R27
RES,SMT,0603
33ohms
U8
5
43
2
1
SOT23-DBV5
SN74LVC1G125DBVR
U9
5
43
2
1
SOT23-DBV5
SN74LVC1G125DBVR 1
2
3
W5
2-3
SCK SELECTION
W5
1-2SRC MCLK
SRC RXCKO
FOR MCLK SOURCES OTHER THAN FROM SRC4392 (U12).
SCK
TO
PCM51XX
I2S TO
PCM51XX
I2S FROM TAS1020B
I2S
RESET
DIGITAL I/O & SRC
N/A
PCM51XXEVM-U
STEVE LEGGIO
OCT 06, 2010
A
A
3 5
SL
PCM51XX_USB_EVM_REVA
RX LOCK
SAMPLE RATE CONVERTER
SRC READY
75 ohms
RX INPUT
I2C
SPDIF INPUTS
MCLK#1
ONBOARD MCLK
FROM TAS1020B
MCLK#2
EXTERNAL MCLK
+3.3VD BNC INPUT
MCLK#3
22.5792MHz MCLK
FROM OSC Y2
MCLK#4
24.576MHz MCLK
FROM OSC Y2
ALTERNATE MCLK SELECTION
MCLK#4
A
MCLK#3
C
OPEN
B
LMCLK#2
MCLK#1
B
C
A
LLL
H
H
LH
L
LL
H
L = SWITCH OFF
H = SWITCH ON
MCLK SELECTION
U7 PINS 1,2,&3