CDB5460AU
CDB5460AU Evaluation Board and Software
Features
General Description
The CDB5460AU is an inexpensive tool designed to evaluate
the functionality and performance of the CS5460A. The evaluation board includes an LT1019 voltage reference, a
C8051F320 microcontroller with a USB interface, and firmware. The microcontroller controls the serial communication
between the evaluation board and the PC via the firmware, enabling quick and easy access to all of the CS5460A's registers
and functions.
Voltage and Current Interface
USB Communication with PC
On-board C8051F320 Microcontroller
On-board Voltage Reference
LabWindows®/CVI® GUI Software
The CDB5460AU includes software for data capture, time domain analysis, histogram analysis, and frequency domain
analysis.
– Register Setup & Chip Control
– FFT Analysis
Schematics in PADS™ PowerLogic™ format are available for
download at www.cirrus.com/IndustrialSoftware.
– Time Domain Analysis
– Noise Histogram Analysis
"Auto-boot" Demo with Serial EEPROM
ORDERING INFORMATION
Evaluation Board
CDB5460AU
+5V
GND
VD+_EXT
+2.5V
reference
USB
Vu+_EXT
SERIAL
EERPOM
REF
IN
OUT
VREF
CS
C8051F320
SDI
VIN+
SDO
SCLK
VIN-
CS5460A
INT
RESET
E1
EOUT
IIN+
EDIR
IIN-
E2
Reset
Circuirty
RESET
BUTTON
MODE
MODE
4.096MHz
Crystal
www.cirrus.com
Copyright © Cirrus Logic, Inc. 2009
(All Rights Reserved)
JAN ‘09
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CDB5460AU
TABLE OF CONTENTS
1. HARDWARE ............................................................................................................................. 3
1.1 Introduction ........................................................................................................................ 3
1.2 Evaluation Board Overview ................................................................................................ 3
1.3 Analog Section ................................................................................................................... 4
1.4 Digital Section .................................................................................................................... 5
1.5 Power Supply Section ........................................................................................................ 5
1.6 Auto-boot Mode ................................................................................................................. 6
2. SOFTWARE .............................................................................................................................. 8
2.1 Installation .......................................................................................................................... 8
2.2 Using the Software ............................................................................................................. 8
2.3 Start-up Window ................................................................................................................ 8
2.4 Setup Window .................................................................................................................. 12
2.5 Calibration Windows ........................................................................................................ 14
2.6 Conversion Window ......................................................................................................... 16
2.7 Pulse Rate Window .......................................................................................................... 17
2.8 Data Collection Window ................................................................................................... 18
2.9 EEPROM Window ............................................................................................................ 25
2.10 Debug Panel .................................................................................................................. 26
Appendix A. Bill Of Materials ................................................................................................... 27
Appendix B. Schematics .......................................................................................................... 29
Appendix C. Layer Plots ........................................................................................................... 33
FIGURE 26. REVISION HISTORY .............................................................................................. 37
LIST OF FIGURES
Figure 1. CDB5460AU Assembly Drawing...................................................................................... 3
Figure 2. GUI Start-up Window ....................................................................................................... 8
Figure 3. Setup Menu Showing Successful USB Connection ......................................................... 9
Figure 4. USB Error Message ......................................................................................................... 9
Figure 5. Data from Disc File Selection Window ........................................................................... 10
Figure 6. Menu Pull-down Options ................................................................................................ 10
Figure 7. Quit Dialog ..................................................................................................................... 11
Figure 8. Setup Window ................................................................................................................ 12
Figure 9. Calibration Window ....................................................................................................... 14
Figure 10. Conversion Window ..................................................................................................... 16
Figure 11. Pulse Rate Output Window .......................................................................................... 17
Figure 12. Data Collection Window ............................................................................................... 18
Figure 13. Configuration Window .................................................................................................. 19
Figure 14. Histogram Analysis ...................................................................................................... 21
Figure 15. FFT Analysis ................................................................................................................ 23
Figure 16. Time Domain Analysis ................................................................................................. 24
Figure 17. EEPROM Window........................................................................................................ 25
Figure 18. Debug Panel ................................................................................................................ 26
Figure 19. Schematic - Analog Inputs ........................................................................................... 29
Figure 20. Schematic - CS5460A & Socket .................................................................................. 30
Figure 21. Schematic - Microcontroller & USB Interface............................................................... 31
Figure 22. Schematic - Power Supplies ........................................................................................ 32
Figure 23. Top Silkscreen ............................................................................................................. 33
Figure 24. Top Routing.................................................................................................................. 34
Figure 25. Bottom Routing ............................................................................................................ 35
Figure 26. Bottom Silkscreen ........................................................................................................ 36
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1. HARDWARE
1.1
Introduction
The CDB5460AU evaluation board provides a quick means of evaluating the CS5460A power measurement IC. The CDB5460AU evaluation board operates from a single +5 V power supply. The evaluation
board interfaces the CS5460A to a PC via an USB interface. To accomplish this, the board comes
equipped with a C8051F320 microcontroller and a USB interface. Additionally, CDB5460AU GUI software
provides easy access to the internal registers of the CS5460A, and provides a means to display the performance in the time domain or the frequency domain.
1.2
Evaluation Board Overview
The board is partitioned into two main sections: analog and digital. The analog section consists of the
CS5460A and a precision voltage reference. The digital section consists of the C8051F320 microcontroller, EEPROM, the hardware test switches, the reset circuitry, and the USB interface. The board also has
a user friendly power supply connection.
+5V
GND
J3
VD+_EXT
J4
Vu+_EXT
J5
JTAG
USB
J6
J1
J2
U1
D1
EVENT
TP26
JP1
TP27 ERROR
8051_REGIN
Vu+_EXT
+5V
VD+
J9
JP2
VD+
VD+_EXT
+5V
+3.3V
GND
VD+
J8
U4
TP25
TP23
TP22 TP24
TP21
U3
TP20
8051
GND
TP1
GND
RESET
GND
J14
J12
J27
GND
IIN+
IINGND
GND
VREF
IIN+
IINVREF
JP6GND
E2
LED_EN
E3
J15
1 LED_EN
Y1
MODE
J16
U5
1
CPUCLK
TP10
J18
5460A
U6
TP11
VINJ22
J24
IIN+
AUTO-BOOT
ENABLE
U9
U11
U10
U2
JP5
TP30
PFMON
GND
U8
J25
VREF
GND
VIN+
TP9
TP12
VA+GND
VREFIN
VIN-
LED_EN
22
XU6
J17
VIN+
1
TP8
4.096MHz
GND
VREF
VIN+
VINVREF
GND
E1
2
J13
TP7
J23
LED_EN
J40
J10
XOUT XIN
CDB5460AU
GND
GND
1
1
CDB5460A_61A_63
LT1019
REF+
REF+
1
E1
E2
E3
INT
RESET
MODE
EECS
CS
SCLK
MISO
MOSI
21
S1
TP2
VREFOUT
JP3
JP4
GND
GNDVD+
TP13
IINJ26
GND
Figure 1. CDB5460AU Assembly Drawing
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1.3
Analog Section
The CDB5460AU evaluation board provides screw-type terminals (J23, J27) to connect input signals to the voltage
and current channels. The screw terminals are labels as VIN+, VIN-, IIN+, and IIN-. A simple RC network at each
channel input provides a simple anti-alias filter.
The evaluation board provides three voltage reference options for VREFIN to the CS5460A. The three voltage reference options include: VREFOUT from the CS5460A, the on-board +2.5V reference, and external REF+ (screw
terminal J14). Table 1 and Table 2 illustrate the options available for VREFIN. With a jumper on J25 in the position
labeled VREFOUT, the reference is supplied by the on-chip voltage reference. With a jumper on J25 in the position
labeled VREF, the reference is supplied by an off-chip voltage reference.
Reference
Description
J25
VREFOUT
Selects On-chip
Reference (30 ppm/°C)
VREF O
VREFIN O
VREFOUT
(Default)
VREF
Selects External or
LT1019 Reference(J12)
VREF O
VREFIN O
VREFOUT
Table 1. Internal Voltage Reference Selection for VREF
Table 2 illustrates the options available for VREF. With a jumper on J12 in position LT1019, the LT1019 provides a
+2.5V reference (the LT1019 was chosen for its low drift — typically 20ppm/°C). By setting the jumper on J12 to
position REF+, an external voltage reference is supplied via screw terminal J14's REF+ input.
Reference
Description
J12
LT1019
Selects On-board
LT1019 Reference
(20 ppm/°C)
LT1019
REF+
O
O
O
VREF
VREF
REF+
Selects External
Reference Source
(J14)
LT1019
REF+
O
O
O
VREF
VREF
(Default)
Table 2. External Voltage Reference Selection for VREF
The three input signal options for the voltage (VIN±) and current (IIN±) channel input include: an external signal
(screw terminals J23 and J27), GND, or VREF. Table3 illustrates the options available. By installing jumpers on J17
to position VIN+, J22 to position VIN-, J24 to position IIN+, and J26 to position IIN-, the input voltage signal is supplied from the screw terminals J23 and J27. With a jumper on J17, J22, J24, and J26 in the GND position, the inputs
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are connected to analog ground (AGND). With a jumper on J17, J22, J24, and J26 in position VREF, the inputs are
connected to the reference voltage selected on J12.
INPUT
Description
VIN± or IIN±
Selects External
Signal
J17
GND
VREF
VIN+
O
O
O
O
O
J22
VIN+
VIN+
VIN+
VINVREF
GND
(Default)
O
O
O
O
O
J24
VINVINVIN-
GND
VREF
IIN+
(Default)
O
O
O
O
O
J26
IIN+
IIN+
IIN+
(Default)
IINVREF O
GND O
O
O
O
IINIINIIN-
(Default)
VIN± or IIN±
Selects External
Signal
GND
VREF
VIN+
O
O
O
O
O
VIN+
VIN+
VIN+
VINVREF
GND
O
O
O
O
O
VINVINVIN-
GND
VREF
IIN+
O
O
O
O
O
IIN+
IIN+
IIN+
IINVREF O
GND O
O
O
O
IINIINIIN-
GND
Selects Grounding
the Input
GND
VREF
VIN+
O
O
O
O
O
VIN+
VIN+
VIN+
VINVREF
GND
O
O
O
O
O
VINVINVIN-
GND
VREF
IIN+
O
O
O
O
O
IIN+
IIN+
IIN+
IINVREF O
GND O
O
O
O
IINIINIIN-
VREFIN
Selects Reference
Source
GND
VREF
VIN+
O
O
O
O
O
VIN+
VIN+
VIN+
VINVREF
GND
O
O
O
O
O
VINVINVIN-
GND
VREF
IIN+
O
O
O
O
O
IIN+
IIN+
IIN+
IINVREF O
GND O
O
O
O
IINIINIIN-
Table 3. Voltage and Current Channel Input Signal Selection
1.4
Digital Section
The digital section contains the microcontroller, USB interface, JTAG header, reset circuitry, and an external interface header (J40). The microcontroller interfaces the SPI™ of CS5460A with the USB connection to the PC, enabling GUI software to access all the CS5460A registers and functions. Interface header,
J40, is provided to allow the CDB5460AU to be connected to an external energy registration device or an
external microcontroller. To connect the CS5460A to an external microcontroller, R57, R58, R59, R60,
R61, and R62 must be removed from the board. The energy output pins EOUT, EDIR are routed to LEDs
(E1, E2) which provide a simple visual check of the energy output pulses. Mode pin is also routed to a
LED to indicate whether the CS5460A is at auto-boot mode. Jumpers J10, J13, J15, and J16 are equipped
at the factory with jumpers to enable the LEDs.
1.5
Power Supply Section
Table 4 illustrates the power supply connections to the evaluation board. The +5V binding post (J3) supplies the positive analog (VA+) for the CS5460A and the on-board +2.5V reference. The VD+_EXT binding post (J5) supplies the digital section of the CS5460A (VD+) and level shifters. Jumper J8 allows the
VD+ supply to be sourced from the VD+_EXT binding post (J5), the +5V binding post (J3), or the regulated
3.3V supply derived from the microcontroller. The Vu+_EXT (J6) binding post supplies the positive supply
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for the 8051 microcontroller (8051_REGIN). Jumper J9 allows the 8051_REGIN supply to be sourced
from either the Vu+_EXT binding post (J6), +5V binding post (J3) or VD+_EXT binding post (J5).
Power Supplies
Power Post Connections
Analog (VA+) Digital (VD+) 8051 (Vu+)
+5V
GND
VD+EXT VU+EXT
NC
+5
+5
+5
0
8051-REGIN
J8
J9
VD+_EXT
+5 O
+3.3 O
O
O
O
VD+
VD+
VD+
Vu+_EXT
+5
VD+
(Default)
NC
+5
VD+
O
O
O
O
O
8051
8051
8051
(Default)
+5
VD+_EXT
+5 O
+3.3 O
O VD+
O VD+
O VD+
Vu+_EXT
+5
VD+
O
O
O 8051
O 8051
O 8051
NC
VD+_EXT
+5 O
+3.3 O
O VD+
O VD+
O VD+
Vu+_EXT
+5
VD+
O
O
O 8051
O 8051
O 8051
VD+_EXT
+5 O
+3.3 O
O VD+
O VD+
O VD+
Vu+_EXT
+5
VD+
O
O
O
O
O
8051
8051
8051
VD+_EXT
+5 O
+3.3 O
O VD+
O VD+
O VD+
Vu+_EXT
+5
VD+
O
O
O
O
O
8051
8051
8051
NC
VD+_EXT
+5 O
+3.3 O
O VD+
O VD+
O VD+
Vu+_EXT
+5
VD+
O
O
O 8051
O 8051
O 8051
+5
VD+_EXT
+5 O
+3.3 O
O VD+
O VD+
O VD+
Vu+_EXT
+5
VD+
O
O
O 8051
O 8051
O 8051
NC
VD+_EXT
+5 O
+3.3 O
O VD+
O VD+
O VD+
Vu+_EXT
+5
VD+
O
O
O 8051
O 8051
O 8051
+5
VD+_EXT
+5 O
+3.3 O
O VD+
O VD+
O VD+
Vu+_EXT
+5
VD+
O
O
O 8051
O 8051
O 8051
+5
+5
NC
NC
+5
+3.3
+5
+5
0
+3.3
Table 4. Power Supply Connections
1.6
Auto-boot Mode
With a jumper connection on J18 (AUTO-BOOT ENABLE), the CS5460A operates in auto-boot mode and
the CDB5460AU board operates as a stand-alone system without attaching it to a PC. When in auto-boot
mode, a hardware reset (press on S1) will cause the CS5460A to boot up using the serial data from the
serial EEPROM on the board (U10). When the CS5460A is in auto-boot mode, the SPI™ connections between the microcontroller and the CS5460A are removed and the GUI software can not access the
CS5460A registers and functions.
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The EEPROM must be programmed prior to the auto-boot sequence. When the CDB5460AU Evaluation
Board is sent from the factory, the EEPROM is programmed with the following CS5460A command/data
sequence:
1. Set Configuration Register, turn high-pass filters on, set K = 1:
0x40 0x00 0x00 0x61
2. Set Pulse_Rate Register to 1000 Hz:
0x4C 0x00 0x7D 0x00
3. Set (Unmask) bit 2 (LSD) in the Mask Register:
0x74 0x00 0x00 0x04
4. Start continuous conversion:
0xE8
5. Write STOP bit in Control register, to terminate auto-boot sequence:
0x78 0x00 0x01 0x00
This sequence programs the CS5460A for continuous conversion mode. If voltage and current signals are
applied to the inputs, the CS5460A will issue pulses on the EOUT pin. See the CS5460A data sheet for
more details on auto-boot.
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CDB5460AU
2. SOFTWARE
The evaluation board comes with software and an USB cable to link the evaluation board to the PC. The
evaluation software was developed with LabWindows®/CVI®, a software development package from national Instruments. The evaluation software is available for download on the Cirrus Logic web site at
http://www.cirrus.com/industrialsoftware and was designed to run under Windows® 2000 or
Windows XP®.
2.1
Installation
To install the software, go to the Cirrus Logic web site at http://www.cirrus.com/industrialsoftware and refer to application note AN278.
2.2
Using the Software
Before launching the software, check all jumper settings on the CDB5460AU evaluation board as described in Section 1, and connect the board to an open USB port on the PC using the provided cable.
Once the board is powered on, the software program can be launched.
2.3
Start-up Window
When the software is launched, the start-up window will appear. This window contains information concerning the software's title, revision number, copyright date, etc. See Figure 2.
Figure 2. GUI Start-up Window
At the top of the screen is a menu bar which displays user options. The menu bar has three items: Menu,
Setup, and Quit. Initially Menu is disabled. After establishing a link to a data source, the Menu item will
become available.
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2.3.1
Setup Menu
Setup allows user to establish a USB communication connection with CDB5460AU board or select a previously saved data file for further analysis.
If the USB item in the Setup menu is selected, the evaluation software will poll the CDB5460AU, verifying
the serial communication link is ready. At this point, the USB menu item is checked indicating that the PC
has successfully communicated with CDB5460AU evaluation board, and device and micro-code version
information are read from the board and displayed on the screen. See Figure 3. Due to improvements to
the software or new features being added, the version displayed may be different than the image shown
here.
Figure 3. Setup Menu Showing Successful USB Connection
If the evaluation software is unable to establish a communication link with the CDB5460AU board, a message will appear, indicating that the initial communication has failed. See Figure 4.
Figure 4. USB Error Message
Check to verify that the USB cable is connected properly and the power supply is on and connected properly to the CDB5460AU. Reset the board (press the RESET button on the board) and try to setup the USB
connection again.
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If the Data from Disk item in the Setup menu is selected, a file selection window will appear as shown in
Figure 5. User can select a pre-saved data file for further analysis using time domain, FFT, and histogram
plots in Data Collection Window of the software.
Figure 5. Data from Disc File Selection Window
2.3.2
Menu Pull-down
Excluding the Start-Up window, the Menu pull-down provides 7 options: Setup Window, Calibration Window, Conversion Window, Pulse Rate Window, Data Collection Window, EEPROM Window, and Debug
Window. Each window provides a means to evaluate the different functions and performance of the
CS5460A. Each option has an associated function key (<F1>, <F2>, etc.). See Figure 6.
Figure 6. Menu Pull-down Options
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2.3.3
Quit Menu
The Quit menu allows the user to exit the evaluation software. Upon selecting Quit, a message window
appears and queries if exiting the evaluation software is desired. See Figure 7.
Figure 7. Quit Dialog
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2.4
Setup Window
The evaluation software provides access to the CS5460A's internal registers through the Setup window.
See Figure 8. The user can enter the Setup window by pulling down the Menu menu and selecting Setup
Window, or by pressing <F2> on the keyboard.
In the Setup window, all of the CS5460A's registers are displayed in hexadecimal notation and are decoded to provide easier readability. Refer to the CS5460A data sheet for information on register functionality
and definitions. See Figure 8.
Figure 8. Setup Window
2.4.1
Refresh Screen Button
The Refresh Screen button will update the contents of the screen by reading all the register values from
the CS5460A. It is a good idea to press the Refresh Screen button when entering the Setup window, or
after modifying any registers, to reflect the current status of the CS5460A.
2.4.2
Reset DUT Button
The Reset DUT button will hardware reset the CS5460A. The CS5460A will perform a reset as discussed
in the CS5460A data sheet. After the hardware reset to the CS5460A device, the screen contents will be
automatically refreshed with the updated status of the CS5460A.
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2.4.3
CS5460A Crystal Frequency
The CS5460A accepts a wide range of crystal input frequencies, and can therefore run at many different
sample rates. The crystal frequency being used on the CS5460A should be entered in this box to provide
accurate frequency calculation in the FFT window. This will also help the software decide which functions
the evaluation system can perform reliably.
2.4.4
Configuration Register
In the Configuration Register box, the contents of the Config register can be modified by typing a hexadecimal value in the HEX: field, or by changing any of the values below the HEX: field to the desired settings. Although the CDB5460AU software allows the user to modify any of the bits in the Config register,
changing certain bits may cause the software and board to behave erratically. For the evaluation system
to function properly, the Interrupt Output field should be set to the default Active Low. This applies only to
the CDB5460AU evaluation system, and not to the CS5460A chip itself.
2.4.5
Mask Register / Status Register
The Mask Register / Status Register box displays the values for these registers in hexadecimal and decodes them to indicate each bit's function. The Mask register can be modified by typing a value in the
HEX: field, or by checking the appropriate check boxes for the bits that are to be masked. The Status register cannot be directly modified. It can only be reset by pressing the Clear Status Register button. The
HEX: field for this register and the lamps are indicators only. A lamp which is on means that the corresponding bit in the Status register is set (except the Invalid Command bit, which is inverted). The value
present in the Mask register may be changed by the software during certain operations to provide correct
functionality of the CDB5460AU board.
2.4.6
Cycle Count / PulseRate / Time Base Registers
These fields display the values of corresponding register in both hexadecimal and decimal format. Each
register can be modified by typing a value in the corresponding Value: or HEX: field.
2.4.7
Control Register
The Control Register box is used to make changes to and display the contents of the Ctrl register. The
Ctrl register contains various bits used to activate or terminate various features of the CS5460A. Refer to
the CS5460A data sheet for descriptions of the bits. The user is able to turn each bit on or off individually.
The value of the Ctrl register is displayed in hexadecimal format. Most of the Ctrl register bits are reserved
or unused. Only the usable bits are displayed in the Setup Window.
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2.5
Calibration Window
The Calibration window is used to display and write to the CS5460A offset and gain calibration registers.
The user is also able to initiate the CS5460A's calibration sequences that are used to set the calibration
values. Both AC and DC calibrations can be run for offset and gain, for either the voltage channel or the
current channel, or both simultaneously. The user should refer to the CS5460A data sheet for more details
on calibration.
The Refresh Screen button will update the contents of the screen by reading all the register values from
the part. It is a good idea to press the Refresh Screen button when entering the Calibration window, or
after modifying any registers to reflect the current status of the CS5460A.
Figure 9. Calibration Window
2.5.1
Offset / Gain Register
In the Offset and Gain boxes, the offset and gain registers for all channels are displayed in hexadecimal
and decimal. These registers can be modified directly by typing the desired value in the hexadecimal display boxes. There are two types of offset registers: DC offset and AC offset. The AC offset registers only
affect the RMS register values. The power offset registers only affect the active power register values.
The offset register is a two's complement number whose value ranges from -1 to +1. The gain register
value ranges from 0 to 4.
2.5.2
Performing Calibrations
Offset and gain calibrations can be performed on both the voltage and current channels of the CS5460A.
Because the initial values in the calibration registers will affect the results of the calibrations, it is generally
a good idea to software reset the CS5460A before running calibrations. A software reset will reset these
registers back to the default values of zero offset and unity gain. Offset calibration should be performed
before gain calibration to ensure accurate results.
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2.5.2.1
Offset Calibrations
1. Ground the channel(s) you want to calibrate directly at the channel header(s), J17 and J22 for the voltage
channel, J24 and J26 for current channel. The channel(s) could also be grounded directly at the screw-type
terminals.
2. Press the corresponding AC or DC offset calibrate button (Cal V, Cal I, or Cal Both) beside or below the
offset register fields.
3. The calibration value(s) will automatically update when the calibration is completed.
2.5.2.2
Gain Calibrations
1. Attach an AC or DC calibration signal to the screw-type terminals, and make sure the corresponding channel headers (J17, J22, J24, and J26) are set to the input position.
2. Press the corresponding AC or DC gain calibrate button (Cal V, Cal I, or Cal Both) beside or below the gain
register fields.
3. The calibration value(s) will automatically update when the calibration is completed.
The Calibration window also contains the Power Offset Register display and adjustment. The user can
read and write the values in the Power Offset register (Poff).
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2.6
Conversion Window
The Conversion window allows the user to see the results of single and continuous conversions, perform
data averaging, and utilize the power-saving modes of the CS5460A. See Figure 10. The Conversion window can be accessed from the Menu pull-down and selecting Conversion Window, or by pressing <F4>.
Figure 10. Conversion Window
2.6.1
Single Conversion Button
Pressing this button will cause a single conversion to be performed. After a single conversion is complete,
the Result column will be updated with the values present in each data register.
2.6.2
Continuous Conversion Button
Pressing this button will cause continuous conversions to be performed until the user presses the Stop
button. After each conversion is complete, the Result column will be updated with the values present in
each data register. The Mean and Standard Deviation columns will be updated every N cycles, where N
is the number in the Samples to Average field. If the Samples to Average is set to a large number, it may
take many collection cycles after pressing the Stop button before the data actually stops being collected.
2.6.3
Standby / Sleep Mode Buttons
When these buttons are pressed, the CS5460A will enter either standby or sleep power saving mode. To
return to normal mode, press the Power Up button.
16
DS487DBU1
CDB5460AU
2.6.4
Power Up Button
This button is used to send the Power Up/Halt command to the CS5460A. The part will return to normal
operating mode and halt any conversions that are being done at this time.
2.6.5
Write Data to File
This box provides a means to write the conversion result data to a .txt text file for later analysis or print
out. The file path and name will be shown in Filename field. The Open File button is used to open a new
or existing .txt text file for data writing. Each time the Write Data button is pressed, the result data is written
into the file and the Number of Lines Written field value will be increased by 1.
2.7
Pulse Rate Output Window
The CS5460A features a pulse-rate energy output. The CDB5460AU has the capability to demonstrate
the functionality of this output in the Pulse Rate Output window. See Figure 11. The Pulse Rate Output
window can be accessed by pressing <F5>, or by pulling down the Menu menu, and selecting the Pulse
Rate Window item.
Figure 11. Pulse Rate Output Window
2.7.1
Integration Seconds
This field allows the user to select the length of time over which pulses will be collected.
2.7.2
Periods To Average
This field allows the user to average a number of integration periods.
2.7.3
Start Button
When the Start button is pressed, the CDB5460AU will capture pulse rate data according to the values in
the Integration Seconds and Periods to Average fields. After each integration period, the Pulse Count,
Frequency columns will be updated. The Average Frequency and Standard Deviation columns will only
be updated after all the integrations have been collected. The software stops collecting data when the
user presses the Stop button, or when the data collection is finished. Due to speed limitations of the onboard microcontroller, some higher pulse rates cannot be accurately collected.
DS487DBU1
17
CDB5460AU
2.8
Data Collection Window
The Data Collection window (Figure 12) allows the user to collect sample sets of data from the CS5460A
and analyze them using time domain, FFT, and histogram plots. The Data collection window can be accessed by pulling down the Menu menu, and selecting the Data Collection window item, or by pressing
<F6>.
Figure 12. Data Collection Window
2.8.1
Time Domain / FFT/ Histogram Selector
This menu selects the type of data processing to perform on the collected data and display in the plot area.
Refer to the Analyzing Data section for more information.
2.8.2
Config Button
This button will bring up the Configuration window, in which the user can modify the data collection specifications. Refer to the Configuration Window section in this document for more information.
2.8.3
Collect Button
This button will collect data from the part, to be analyzed in the plot area. See the Collecting Data Sets
section for more information.
18
DS487DBU1
CDB5460AU
2.8.4
Output Button
This button will bring up a window in which the user can output the collected data to a file for later use,
print out a plot, or print out the entire screen. When saving data, only the data channel being displayed
on the plot will be saved to a file.
2.8.5
Zoom Button
This button allows the user to zoom in on the plot by selecting two points in the plot area. Press the Restore button to return to the normal data plot, or press the Zoom button again to zoom in even further.
2.8.6
Channel Select Button
After data collection, the two buttons labeled as “No Data” will be replaced with Current and Voltage buttons, allowing the user to choose the appropriate channel for display. In the time domain mode, an additional Overlay button will be present which allows the user to display all the channels on the same plot.
2.8.7
Configuration Window
The Configuration window allows the user to set up the data collection and analysis parameters.
Figure 13. Configuration Window
2.8.7.1
Number of Samples
This field allows the user to select the number of samples to collect, between 16 and 32768.
2.8.7.2
Average
When performing FFT analyses, this field determines the number of FFTs to average. FFTs will be collected and averaged when the Collect button is pressed.
DS487DBU1
19
CDB5460AU
2.8.7.3
FFT Window
This field allows the user to select the type of windowing algorithm for FFT processing. Windowing algorithms include the Blackman, Blackman-Harris, Hanning, 5-term Hodie, and 7-term Hodie. The 5-term
Hodie and 7-term Hodie are windowing algorithms developed at Crystal Semiconductor.
2.8.7.4
Histogram Bin Width
This field determines the "bin width" when plotting histograms of the collected data. Each vertical bar in
the histogram plot will contain the number of output codes within a bin range. Decreasing this number may
allow the user to view histograms in more detail.
2.8.7.5
Data to Collect
These three check boxes allow the user to select the data types that will be collected and returned to the
PC for processing.
2.8.7.6
Cycle Count
The value in the Cycle Count field will be written to the Cycle Count register in the CS5460A. The Cycle
Count register determines the length of one computation cycle. The Cycle Count value should be selected
appropriately according to the Data to Collect setting. For example, if the Data to Collect is instantaneous
current, voltage, or power it is better to set Cycle Count to 1.
2.8.7.7
Accept Button
When this button is pressed, the current settings will be saved, and the user will return to the Data Collection window.
2.8.8
Collecting Data Sets
To collect a sample data set:
1. In the Data Collection window, press the Config button to bring up the Configuration window and view the
current settings.
2. Select the appropriate settings from the available options (see the Configuration Window section) and press
the Accept button.
3. The Data Collection window should still be visible. Press the Collect button to begin collecting data.
4. Once the data has been collected, it can be analyzed, printed, or saved to disk.
2.8.9
Retrieving Saved Data From a File
The CDB5460AU software allows the user to save data to a file, and retrieve it later when needed. To load
a previously saved file:
1. Pull down the Setup menu and select the Disk menu item. A file menu will appear.
2. Find the data file in the list and select it. Press the Select button to return.
3. Go to the Data Collection window, and press the Collect button.
4. The data from the file should appear on the screen. The data will be ready for different types of analysis.
5. To select a different file, repeat the procedure.
20
DS487DBU1
CDB5460AU
2.8.10 Analyzing Data
The evaluation software provides three types of analysis tests: Time Domain, Frequency Domain, and
Histogram. The time domain analysis processes acquired conversions to produce a plot of magnitude versus conversion sample number. The frequency domain analysis processes acquired conversions to produce a plot of magnitude versus frequency using the Fast-Fourier transform (results up to Fs/2 are
calculated and plotted). The histogram analysis processes acquired conversions to produce a histogram
plot. Statistical noise calculations are also calculated and displayed.
2.8.11
Histogram Information
The following is a description of the indicators associated with histogram analysis. Histograms can be plotted in the Data Collection window by setting the analysis type pull-down menu to Histogram.
Figure 14. Histogram Analysis
2.8.11.1 BIN
Displays the x-axis value of the cursor on the histogram.
2.8.11.2 MAGNITUDE
Displays the y-axis value of the cursor on the histogram.
DS487DBU1
21
CDB5460AU
2.8.11.3 MEAN
Indicates the mean of the data sample set. The mean is calculated using the following formula:
n–1
∑ Xi
i=0
Mean = ---------------n
2.8.11.4 STD_DEV
Indicates the standard deviation of the collected data set. The standard deviation is calculated using the
following formula:
n–1
∑ ( Xi – MEAN )
STDDEV =
2
i=0
-----------------------------------------------n
2.8.11.5 VARIANCE
Indicates for the variance of the current data set. The variance is calculated using the following formula:
n–1
∑ ( Xi – MEAN )
2
i=0
VARIANCE = -----------------------------------------------n
2.8.11.6 MAXIMUM
Indicates the maximum value of the collected data set.
2.8.11.7 MINIMUM
Indicates the minimum value of the collected data set.
22
DS487DBU1
CDB5460AU
2.8.12 Frequency Domain Information
The following describe the indicators associated with FFT (Fast Fourier Transform) analysis. FFT data
can be plotted in the Data Collection window by setting the analysis type selector to FFT.
Figure 15. FFT Analysis
2.8.12.1 FREQUENCY
Displays the x-axis value of the cursor on the FFT display.
2.8.12.2 MAGNITUDE
Displays the y-axis value of the cursor on the FFT display.
2.8.12.3 S/PN
Indicates the signal-to-peak noise ratio (decibels).
2.8.12.4 SINAD
Indicates for the signal-plus-noise-plus-distortion to noise-plus-distortion ratio (decibels).
2.8.12.5 S/D
Indicates for the signal-to-distortion ratio, 4 harmonics are used in the calculations (decibels).
DS487DBU1
23
CDB5460AU
2.8.12.6 SNR
Indicates for the signal-to-noise ratio, first 4 harmonics are not included (decibels).
2.8.12.7 FS-Pdb
Indicates for the full-scale to signal Ratio (decibels).
2.8.12.8 Time Domain Information
The following controls and indicators are associated with time domain analysis. Time domain data can be
plotted in the Data Collection window by setting the analysis type selector to Time Domain.
Figure 16. Time Domain Analysis
2.8.12.9 COUNT
Displays current x-position of the cursor on the time domain display.
2.8.12.10 MAGNITUDE
Displays current y-position of the cursor on the time domain display.
2.8.12.11 MAXIMUM
Indicates for the maximum value of the collected data set.
2.8.12.12 MINIMUM
Indicates for the minimum value of the collected data set.
24
DS487DBU1
CDB5460AU
2.9
EEPROM Window
CDB5460AU has an "Auto-Boot" demo feature that uses the on-board serial EEPROM, so that the
CDB5460AU can operate independently without being connected to a PC. CDB5460AU GUI software
also provides an EEPROM window for reading & writing the serial EEPROM.
Figure 17. EEPROM Window
2.9.1
Bytes to Read/Write
The Bytes to Read/Write field allows the user to define the number of bytes to read or write.
2.9.2
Read EEPROM
First input the number of bytes to read in the Bytes to Read/Write field. After pressing the Read button,
that number of bytes starting from the address 0x00 will be read from EEPROM and displayed in the EEPROM table in hexadecimal format.
2.9.3
Write EEPROM
Input the number of bytes to write in the Bytes to Read/Write field and input the hexadecimal byte values
in the EEPROM table starting from address 0x00. After pressing the Write button, the bytes in the EEPROM table will be written to the EEPROM.
DS487DBU1
25
CDB5460AU
2.10
Debug Panel
The Debug panel provides the user a way to access CS5460A registers and send commands to CS5460A
directly. See Figure 18. Refer to section 4.1 in the CS5460A data sheet for more detailed information
about the commands and registers.
Figure 18. Debug Panel
26
DS487DBU1
DS487DBU1
Cirrus P/N
001-06872-Z1
001-02779-Z1
001-02189-Z1
012-00010-Z1
001-04344-Z1
001-03266-Z1
001-06685-Z1
012-00012-Z1
001-07078-Z1
070-00055-Z1
165-00004-Z1
115-00003-Z1
110-00041-Z1
110-00010-Z1
110-00008-Z1
115-00016-Z1
115-00014-Z1
115-00013-Z1
110-00056-Z1
110-00055-Z1
115-00009-Z1
115-00031-Z1
080-00004-Z1
304-00001-Z1
020-01848-Z1
020-01588-Z1
020-01816-Z1
020-01930-Z1
035-00005-Z1
020-01667-Z1
020-01905-Z1
021-00759-Z1
Item
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
CIRRUS LOGIC
CDB5460AU_Rev_B.bom
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
Rev
A
A
A
A
A
A
A
A
A
A
A
A
A
A
RES 10 OHM 1/8W ±1% NPb 0805 FILM
RES 1k OHM 1/8W ±1% NPb 0805 FILM
RES 10k OHM 1/8W ±1% NPb 0805 FILM
RES POT 5k ±10% 25TURN TRIM NPb TH
RES 49.9 OHM 1/8W ±1% NPb 0805 FILM
RES 6.04k OHM 1/8W ±1% NPb 0805 FLM
RES 1k OHM 1/3W ±5% NPb 1210 FILM
RES 2k OHM 1/8W ±1% NPb 0805 FILM
SPCR STANDOFF 4-40 THR .875L AL NPb
HDR 3x1 ML .1" 062 ST GLD NPb TH
HDR 11x2 ML .1"CTR 062 S GLD NPb
WIRE JUMPER 2P 0.1" BRASS NPb TH
CON TERM BLCK 4 POS 5mm NPb BLU TH
HDR 3x2 ML .1"CTR 062 S GLD NPb
HDR 2x1 ML .1" 062BD ST GLD NPb TH
HDR 2x2 ML .1"CTR .062BD S GLD NPb
CON TERM BLOCK 2POS 5mm NPb BLU TH
CON BPOST 2" SILV NYLON INS BLK NPb
Description
CAP 0.1uF ±10% 50V NPb X7R 1206
CAP 22pF ±5% 50V C0G NPb 0805
CAP 0.1uF ±10% 16V X7R NPb 0603
CAP 47uF ±20% 16V NPb ELEC CASE C
CAP 0.1uF ±5% 50V X7R NPb 0805
CAP 220pF ±10% 50V X7R NPb 0805
CAP 0.018uF ±10% 50V X7R NPb 1206
CAP 10uF ±20% 16V ELEC NPb CASE A
CAP 1uF ±10% 25V X7R NPb 1206
DIODE ARRAY 5V (TVS) ESD NPb SOT143
LED SUP RED 1.7V 1mA 1.6MCD NPb SMD
HDR 5x2 ML .1"CTR S GLD NPb
CON RA USB BLK NPb TH
CON BPOST 2" SILV NYLON INS RED NPb
1
5
0
0
1
0
4
12
4
1
1
6
2
6
5
1
1
1
Qty
6
1
5
4
7
4
2
3
1
1
6
1
1
3
R4
R5 R11 R12 R13 R18
R19
R20
R21
R22
R23 R24 R26 R28
R2 R3 R6 R7 R8 R14 R15 R16 R17 R29 R36
MH1 MH2 MH3 MH4
J25
J40
JP1 JP2 JP3 JP4 JP5 JP6
J23 J27
J8 J9 J17 J22 J24 J26
J10 J13 J15 J16 J18
J12
J14
J4
Reference Designator
C1 C18 C19 C21 C29 C30
C2
C3 C4 C26 C32 C33
C5 C8 C28 C31
C6 C7 C10 C11 C12 C15 C25
C9 C17 C20 C24
C13 C23
C14 C22 C1000
C16
D1
D2 D3 D4 D5 D6 D7
J1
J2
J3 J5 J6
BILL OF MATERIAL (Page 1 of 2)
DALE
DALE
DALE
BOURNS
DALE
DALE
DALE
DALE
SAMTEC
SAMTEC
SAMTEC
ON-SHORE
TECHNOLOGY
ON-SHORE
TECHNOLOGY
SAMTEC
SAMTEC
COMPONENTS
CORPORATION
KEYSTONE
JOHNSON
COMPONENTS
MFG
KEMET
KEMET
KEMET
PANASONIC
KEMET
KEMET
KEMET
PANASONIC
KEMET
LITTELFUSE
CHICAGO MINIATURE
SAMTEC
AMP
JOHNSON
COMPONENTS
CRCW080510R0FKEA
CRCW08051K00FKEA
CRCW080510K0FKEA
3296W-1-502LF
CRCW080549R9FKEA
CRCW08056K04FKEA
CRCW12101K00JNEA
CRCW08052K00FKEA
1809
TSW-103-07-G-S
TSW-111-07-G-D
TP-101-10
ED 100/4DS
TSW-103-07-G-D
TSW-102-07-G-S
TSW-102-07-G-D
ED 100/2DS
111-0103-001
MFG P/N
C1206C104K5RAC
C0805C220J5GAC
C0603C104K4RAC
EEE1CA470WR
C0805C104J5RAC
C0805C221K5RAC
C1206C183K5RAC
EEE1CS100SR
C1206C105K3RAC
SP0503BAHTG
CMD28-21SRC/TR8/T1
TSW-105-07-G-D
292304-1
111-0102-001
DO NOT POPULATE
DO NOT POPULATE
DO NOT POPULATE
REQUIRES 4-40- PAN HEAD
SCREW
REQUIRES WIRE, 1.5L X 0.25T X
0.25T TYPE E 24/19 BLU SQUIRES
ELEC. INC.
REQUIRES WIRE, 1.5L X 0.25T X
0.25T TYPE E 24/19 BLU SQUIRES
ELEC. INC.
Notes
CDB5460AU
APPENDIX A. BILL OF MATERIALS
27
28
Cirrus P/N
020-03355-Z1
020-03378-Z1
020-03539-Z1
020-02748-Z1
020-01473-Z1
020-02273-Z1
120-00002-Z1
110-00045-Z1
062-00124-Z1
061-00250-Z1
062-00079-Z1
060-00061-Z1
061-00190-Z1
065-00161-Z2
061-00002-Z1
061-00219-Z1
062-00122-Z1
080-00003-Z1
300-00025-Z1
135-00013-01
100-00049-Z1
070-00006-Z1
600-00176-Z2
240-00176-Z1
603-00176-01
110-00013-Z1
422-00037-01
020-01473-Z1
110-00045-Z1
312-00008-01
Item
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
CIRRUS LOGIC
CDB5460AU_Rev_B.bom
A
A
A
A1
A
A
A
A
A
A
B
B
B
D
A
C
A
A
A
A
A
A
A
A
A
Rev
A
A
A
A
A
RES 0 OHM 1/18W ±1% NPb 0805 FILM
CON TEST PT .1"CTR TIN PLAT NPb BLK
INSULATOR .312 x .145 FOR HC49U/US
LBL SUBASSY PRODUCT NUMBER
IC PGM EEPROM 512x8 SPI NPb SOIC8
WIRE BPOST 1.5X.25 24/19 GA BLU NPb
SCREW 4-40X5/16" PH MACH SS NPb
SKT PINCH CONTACT FOR SSOP24
XTL 4.0960MHZ HC49S 50ppm 50pF NPb
DIODE TR 6.8V 600W NPb AXL
SCHEM CDB5460AU-Z NPb
PCB CDB5460A_61A_63 NPb
ASSY DWG PWA CDB5460A_61A_63
CON SHUNT 2P .1"CTR BLK NPb
IC LOG UHS TINY ANA SWT 6P NPb SC70
IC CRUS PWR/ENERGY IC NPb SSOP24
IC LOG INV 5P UHS TINY NPb SOT23
IC LNR PREC V REF 2.5V NPb SO8
IC LOG UHS TINY DUAL BUF NPb SC70-6
IC PGM USB 16kB FLAS MCU NPb LQFP32
IC PGM 128BIT SER EPROM NPb SOT23-5
IC DIG LOW V BUF/LDRV 5V NPb SOIC20
CON TEST PT .1"CTR TIN PLAT NPb BLK
RES 0 OHM 1/4W NPb 1206 FILM
SWT SPST 130G 0/1 5mm TACT ESD NPb
Description
RES 301 OHM 1/3W ±1% NPb 1210 FILM
RES 470 OHM 1/3W ±1% NPb 1210 FILM
RES 12.1k OHM 1/3W ±1% NPb 1210 FLM
RES 15k OHM 1/4W ±1% 1206 NPb FILM
RES 0 OHM 1/18W ±1% NPb 0805 FILM
0
0
1
1
1
4
4
0
1
3
REF
1
REF
12
2
1
1
1
1
1
1
1
16
1
1
Qty
1
4
1
1
12
DALE
ITT INDUSTRIES
MFG
DALE
DALE
DALE
DALE
DALE
R34
TP7 TP8
XY1
DALE
KEYSTONE
ECS
CIRRUS LOGIC
TP1 TP2 TP9 TP10 TP11 TP12 TP13 TP20 TP21 KEYSTONE
TP22 TP23 TP24 TP25 TP26 TP27 TP30
U1
MICROCHIP
U2
FAIRCHILD
SEMICONDUCTOR
U3
SILICON
LABORATORIES INC
U4
LINEAR TECH
U5
FAIRCHILD
SEMICONDUCTOR
U6
CIRRUS LOGIC
U8
FAIRCHILD
SEMICONDUCTOR
U9 U11
FAIRCHILD
SEMICONDUCTOR
U10
ATMEL
XJ3 XJ4 XJ5 XJ6
SQUIRES
XMH1 XMH2 XMH3 XMH4
BUILDING FASTENERS
XU6
ENPLAS
Y1
CAL CRYSTAL
Z1 Z2 Z3
LITTELFUSE
CIRRUS LOGIC
CIRRUS LOGIC
CIRRUS LOGIC
MOLEX
Reference Designator
R25
R30 R31 R32 R33
R35
R37
R51 R52 R53 R54 R55 R56 R57 R58 R59 R60
R61 R62
R64
S1
BILL OF MATERIAL (Page 2 of 2)
CRCW08050000Z0EA
5001
700-9001
422-00037-01
AT25040AN-10SU-2.7
L-1.5X.25TX.25T_TYPE_E_
PMSSS 440 0031 PH
OTS-24(34)-0.65-01
CCL-6S-4.0960C14F-R
P6KE6.8
600-00176-Z2
240-00176-Z1
603-00176-01
15-29-1025
NC7SB3157P6X
CS5460A-BSZ/C
NC7SZ04M5X
LT1019CS8-2.5#PBF
NC7WZ07P6X
C8051F320-GQ
24LC00-I/OT
74LCX760WMX
5001
CRCW12060000Z0EA
PTS645TL50
MFG P/N
CRCW1210301RFKEA
CRCW1210470RFKEA
CRCW121012K1FKEA
CRCW120615K0FKEA
CRCW08050000Z0EA
DO NOT POPULATE
DO NOT POPULATE
INSULATOR FOR Y1
REFER TO ASSEMBLY DRAWING
FOR PLACEMENT LOCATIONS
REFER TO ASSEMBLY DRAWING
FOR PLACEMENT LOCATION
PROGRAM AT TEST
WIRES FOR BINDING POSTS
SCREWS FOR STANDOFFS
DO NOT POPULATE
PROGRAM AT TEST
PROGRAM AT TEST
INSTALL AFTER WASH PROCESS
Notes
CDB5460AU
DS487DBU1
CDB5460AU
Figure 19. Schematic - Analog Inputs
APPENDIX B. SCHEMATICS
DS487DBU1
29
Figure 20. Schematic - CS5460A & Socket
CDB5460AU
30
DS487DBU1
Figure 21. Schematic - Microcontroller & USB Interface
CDB5460AU
DS487DBU1
31
Figure 22. Schematic - Power Supplies
CDB5460AU
32
DS487DBU1
CDB5460AU
Figure 23. Top Silkscreen
APPENDIX C. LAYER PLOTS
DS487DBU1
33
Figure 24. Top Routing
CDB5460AU
34
DS487DBU1
Figure 25. Bottom Routing
CDB5460AU
DS487DBU1
35
Figure 26. Bottom Silkscreen
CDB5460AU
36
DS487DBU1
CDB5460AU
REVISION HISTORY
Revision
Date
DB1
JAN 2009
DS487DBU1
Changes
Initial Release.
37
CDB5460AU
Contacting Cirrus Logic Support
For all product questions and inquiries contact a Cirrus Logic Sales Representative. To find the one nearest to you
go to www.cirrus.com
IMPORTANT NOTICE
Cirrus Logic, Inc. and its subsidiaries ("Cirrus") believe 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" without warranty of any kind (express or implied). Customers are advised to obtain the latest version of relevant
information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale
supplied at the time of order acknowledgment, including those pertaining to warranty, indemnification, and limitation of liability. No responsibility is assumed by Cirrus
for the use of this information, including use of this information as the basis for manufacture or sale of any items, or for infringement of patents or other rights of third
parties. This document is the property of Cirrus and by furnishing this information, Cirrus grants no license, express or implied under any patents, mask work rights,
copyrights, trademarks, trade secrets or other intellectual property rights. Cirrus owns the copyrights associated with the information contained herein and gives
consent for copies to be made of the information only for use within your organization with respect to Cirrus integrated circuits or other products of Cirrus. This consent does not extend to other copying such as copying for general distribution, advertising or promotional purposes, or for creating any work for resale.
CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE ("CRITICAL APPLICATIONS"). CIRRUS PRODUCTS ARE NOT DESIGNED, AUTHORIZED OR WARRANTED FOR
USE IN PRODUCTS SURGICALLY IMPLANTED INTO THE BODY, AUTOMOTIVE SAFETY OR SECURITY DEVICES, LIFE SUPPORT PRODUCTS OR OTHER
CRITICAL APPLICATIONS. INCLUSION OF CIRRUS PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO BE FULLY AT THE CUSTOMER'S RISK
AND CIRRUS DISCLAIMS AND MAKES NO WARRANTY, EXPRESS, STATUTORY OR IMPLIED, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR PARTICULAR PURPOSE, WITH REGARD TO ANY CIRRUS PRODUCT THAT IS USED IN SUCH A MANNER. IF THE CUSTOMER
OR CUSTOMER'S CUSTOMER USES OR PERMITS THE USE OF CIRRUS PRODUCTS IN CRITICAL APPLICATIONS, CUSTOMER AGREES, BY SUCH USE,
TO FULLY INDEMNIFY CIRRUS, ITS OFFICERS, DIRECTORS, EMPLOYEES, DISTRIBUTORS AND OTHER AGENTS FROM ANY AND ALL LIABILITY, INCLUDING ATTORNEYS' FEES AND COSTS, THAT MAY RESULT FROM OR ARISE IN CONNECTION WITH THESE USES.
Cirrus Logic, Cirrus, and the Cirrus Logic logo designs are trademarks of Cirrus Logic, Inc. All other brand and product names in this document may be trademarks
or service marks of their respective owners.
LabWindows and CVI are registered trademarks of National Instruments, Inc.
Windows, Windows 2000, and Windows XP are trademarks or registered trademarks of Microsoft Corporation.
PADS and PowerLogic are trademarks of Mentor Graphics Corporation.
SPI is a trademark of Motorola Semiconductor, Inc.
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