PurePathTM Console Motherboard - Mouser Electronics · Micro USB 24VDCPSU Optical/Coax SPDIF IN ANALOG IN ANALOG OUT EXT I2S PurePath Console Motherboard Setup and Software Installation
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User's GuideSLOU366A–June 2013–Revised July 2013
PurePathTM Console Motherboard
This manual describes the operation of the PurePath™ Console Motherboard (PPCMB), revision D. ThePPCMB connects to device under test (DUT) boards. These can be evaluation modules (EVM) orreference boards (REF). The PurePath Console graphical user interface (PPC) is used to initialize andoperate the PPCMB and the DUT. The main contents of this document are:
13 PurePath Console Motherboard, Revision D, Top Composite Assembly .......................................... 12PurePath is a trademark of Texas Instruments.Windows is a registered trademark of Microsoft Corporation.I2C is a trademark of NXP.
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The PPCMB provides control signals and audio signals to the DUT. The PPC sends the control signals tothe TAS1020B via USB human-interface device (HID) protocol. The TAS1020B converts to I2C™ andsends to the appropriate I2C address. The audio signals are provided through USB audio, SPDIF, oranalog signals. The aforementioned signals are converted to I2S – see Figure 2.
Figure 1. PurePath Console Motherboard
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• Interface with PurePath Smart Amp and audio devices designed for use in TV, mini-component, AVRapplication
1.2 PurePath Console Motherboard Functions
The PPCMB is organized into two sections: control data and audio data. Control data is routed via I2C busand audio data is routed via I2S bus. There is also an analog signal that can be routed directly to and fromthe DUT.
The control data is sent from the PPC via TAS1020B USB to I2C commands. The MPS430 can also beused independent of the PC host. The MSP430 is used for stand-alone demonstrations; therefore, it isconfigured for each application.
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The digital audio data input is selectable from USB audio, optical SPDIF, coaxial SPDIF, and analog ADC.When a digital audio data input is selected, the PPC will automatically send appropriate scripts to thedevice in-use.
When direct audio analog input is required, the PPCMB will provide this signal via line-in connector.
• TLV320AIC3262 (mini-DSP) provides programmable algorithms and audio post-processing for manyapplications
• PWM modulator with dual ASRC and post-processing capability can be used in mini-component orAVR systems. The PWM output is connected directly to TI's high-power (300 W) amplifier TAS5624AEVM.
• I2S audio from the DUT can be captured via USB link or optical SPDIF for signal analysis
The following information can be used as a debugging guide.
Upon power-on, the PPCMB uses optical SPDIF input (default). The I2S signals can be seen with anoscilloscope probe at the pin headers LRCLK, SCLK, SDIN, and MCLK.
EEPROM 1 (EP1) is flashed with firmware that runs the TAS1020B for USB audio (USB-miniEVM), HID,and USB Composite Device. See the Device Manager, Figure 3.
Figure 3. Device Manager
When the PPCMB is plugged in to a PC, the Device Manager should show all of the USB devices shownin Figure 3. If one of the devices does not show up, the PPCMB will not work correctly.
When the PPC is executed, the PPC uses the USB audio as the default I2S input. The PCM9211 acts asthe multiplexor that selects among the following I2S signal sources: optical SPDIF, coaxial SPDIF, andUSB audio. The output of the PCM9211 is routed to the TLV320AIC3262. The signal from theTLV320AIC3262 is then routed to the TAS5548 and the output connector (J1). The TLV320AIC3262 canbe bypassed by switching the MUX3 select control signal to high and the MUX4, MUX5, and MUX6 selectcontrol signals to low by using the PPC; and adding jumpers between pins 1 and 2 of the header LRCLK,SCLK, SDIN, and MCLK pins.
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PurePath Console Motherboard Setup and Software Installation www.ti.com
The I2S header pins are used for three purposes: probing I2S signals coming out of PCM9211, bypassingI2S signals from TLV320AIC3262 and using the PCM9211 I2S signals, and bypassing I2S signals fromthe TLV320AIC3262 and using an external I2S source.
The TAS5548 is used for PWM input devices such as the TAS5624. The TAS5548 is TI's latest 8-channelPWM modulator and has dual ASRC with audio post processing. Please go to www.ti.com for moreinformation.
The PCM3168A takes analog inputs (AIN1 and AIN2) and routes them to the TLV320AIC3262. AIN1 isconverted to I2S and routed to TAS5548 and J1. There is also an analog switch (MUX2) that can routeanalog input directly to DUT via J1.
The GPIO extender (TCA6424A – U8) is used for initialization of the multiplexors and discrete signals. It iscontrolled from the PPC via I2C.
The MSP430 is populated but is not programmed. It is used in place of a PC for specifically-designeddemonstrations using a combination of TI devices on the PPCMB and a DUT evaluation board orreference boards.
2 PurePath Console Motherboard Setup and Software Installation
This section describes the PPCMB setup and software installation. Since the PPCMB connects to one ofthe DUT EVMs, it is necessary to show the connection in this section. The TAS5760xEVM is used for thispurpose.
2.1 PurePath Console Motherboard Setup
Figure 4 illustrates the PPCMB connection.
Figure 4. PurePath Console Motherboard Connection
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www.ti.com PurePath Console Motherboard Setup and Software Installation
Hardware requirements:
• Desktop or laptop PC running either Windows® XP or Windows 7
• DUT EVM such as TAS5760xEVM; It is used here as an example
• Power supply 24 VDC
• Speakers and cables
• A USB micro type B cable
• Audio source: this can be a DVD player with appropriate SPDIF cable or Windows Media Player fromWindows XP or Windows 7
Hardware setup:
• Plug in the USB cable from the PC to the PPCMB; the USB Lock LED (blue) is illuminated
• Connect the PPCMB to the DUT EVM, in this case the TAS5760xEVM
• Connect the PSU to DUT EVM and turn on the power. 5-V and 3.3-V LEDs are illuminated
• If an optical SPDIF source is used, the blue SPDIF clock-locked LED is illuminated
• Disregard the orange LED indicating the energy threshold (ET) level is exceeded. The ET value mustbe cleared for the orange LED to be extinguished.
2.2 Software Installation
Download the PPC from the TI Web site. The TI Web site has the latest release of the GUI.
Execute the GUI installation program, Setup_PurePathConsole_Main_vxx_revxx.exe. Once the program isinstalled, the program group and shortcut icon is created in Start → Program → Texas Instruments Inc →PurePath Console → Choose Target. The Target Selection window is displayed; select TAS5760 asshown in Figure 5.
Figure 5. Target Selection List
If the device is not listed in the Target Selection list, click the Add Target button. Windows explorerdisplays. Navigate to the folder that contains the target zip files (plugins) and choose the DUT.
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Figure 6. Add Target List
Figure 7. PurePath Console Motherboard and TAS5760xEVM
Click on the Connect button. The green LED on the bottom left corner of the PurePath Console windowindicates the initialization of TAS5760 is valid.
The PPCMB is initialized with the selected USB audio (USB-miniEVM). Streaming audio from the USBhost is routed to the DUT (TAS5760).
If optical SPIDF is used, simply click on the SPDIF/OPT symbol on the PPC, the I2S is routed with theoptical SPDIF signal. Likewise, if analog input signal (line-in) is selected, the ADC (PCM3168A) is thesource of I2S data.
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www.ti.com Using the PurePath Console Software with the PurePath Console Motherboard
3 Using the PurePath Console Software with the PurePath Console Motherboard
The TAS5760xEVM is initialized upon PPC startup. Audio is streaming to the speakers if the WindowsMedia Player (or similar program) is playing and mini-USB EVM is selected in the sound playbackproperties. The following indicators show both the PPC and TAS5760xEVM are operating correctly:
• On the PPCMB, the USB blue LED is on, the green LEDs for 3.3 V and 5 V are on
• On the PPC, the green LED on the bottom left corner is on
NOTE: For PPCMB, yellow LED indicator on for ET is normal. This indicates the energy threshold isabove the default limit in the TAS5548. The VALID blue LED is on if the TAS5548 is correctlyinitialized.
3.1 Device Main Tab
The DUT tab is displayed when the PPC starts up. Click on the TAS5760 icon and it directs you to thedevice block diagram, see Figure 8.
3.2 Device Block Diagram Tab
This tab shows the device major blocks. The boxes with black background are selectable. When one isselected, it shows pop-up settings for the particular setting.
Figure 8. DUT Block Diagram (TAS5760)
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Using the PurePath Console Software with the PurePath Console Motherboard www.ti.com
3.3 Pop-up Windows
For the TAS5760, there are several settings that are done via I2C and the GUI facilitates these settingsseamlessly using the pop-up windows shown in Figure 9 and Figure 10.
Figure 9. Digital Gain Pop-Up
Figure 10. Analog Gain Pop-Up
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www.ti.com Using the PurePath Console Software with the PurePath Console Motherboard
3.4 Direct I2C Access Tab
I2C registers read and write can be performed on this tab (Figure 11). Type in the device I2C address andclick the Set button. On the Direct I2C Read/Write box, type in a valid I2C register for read and type in bothvalid register and data for write.
Figure 11. Direct I2C Access
3.5 Device Registers Tab
The device registers tab (Figure 12) shows the current I2C registers values (hexadecimal and decimal) inthe TAS5760.
Figure 12. Device Registers Tab
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DELETED AND SHORTED ACROSS R149 TO R152,DELETED NAND1, R127, R131, R145, R146, R423, R424, R425.RENAMED LED7-LED15 TO LED6-LED14.RENAMED AND6 TO AND2.RENAMED AND7 TO AND3.RENAMED EEPROM1 TO EP1.CHANGED EP1 TO 24LC512.RENAMED EEPROM2 TO EP2.CHANGED EP2 TO 24LC512.CHANGE U7-26 TO 3.3V PULLUP.MOVE C200, C207, C214 AND C221 TO OUTPUT SIDE OF AIN1 AND AIN2.CHANGED EPROM1/2 TO 512K.ADD AND GATE(AND4) TO SYSTEM RESET.NETS = PB-RESET AND USB-RESET.ADDED RESET NET TO U8-28.ADDED TESTPOINT TO MUX4/5/6 A/B CONTROL PINS.ADDED TESTPOINTS TO PWM OUTPUTS.DELETE S6, R501 AND NET TO MCU-15.ADDED TESTPOINTS TO PWM I2S OUTS MCLK, SCLKO, LRCLKO, SDOUT.ADDED 10K PULLDOWN (R278) TO MUX2-IN1/2.ADDED ZERO OHM RESISTOR MUX3-6.ADDED DNP PULLDOWN RESISTOR TO MUX4/5/6 INA/B CONTROL.ADDED VALID LED AND DRIVER.ADDED I2C ADDRESSES.
1.2.3.4.5.6.7.8.9.
10.11.12.13.
CHANGED J1 FROM RIGHT ANGLE TO VERTICLE MOUNT. (QSS-050-01-F-D-A)CHANGED ALL LEDS TO 0402 EXCEPT LEDS 1-5.CHANGE R5 VALUE TO 61.9K OHMS.ADDED 3.3V TO J1-58,60, 62,64.ADDED RESET TO J1-66.DELETED LED6 AND R513.DELETED R245.POPULATED R426, VALUE = 0402-47 OHMS.CONNECTED R426 TO U4-39.ADDED R513 (0402-10K) TO 3.3V AND MCU-19.CONNECTED U8-32 TO MCU-19.ADD CR2 BETWEEN C7 AND C8.ADDED THUMBNUT PADS FOR J1.
B AUGUST 20, 2012 TL
REVISION HISTORY 10
TLJULY 11, 2012RELEASEA
APPROVALDATEDESCRIPTIONREVISION
REVISION HISTORY
TLDECEMBER 11, 2012C
D MAY 29, 2013 TL
DELETED 1.8V LED, R10, FB10, FB12.CONVERTED PSIA 2 PIN HEADER TO 3 PIN I2S BYPASS HEADERS.CONNECTED I2S-3262 TO PIN 1 OF BYPASS HEADERS.GROUNDED U3-27.CHANGED OPTO-IN PART TO PLR135/T10.CHANGED R133/R134 TO 0402/2.00K OHMS.REPLACED Q3 WITH NPN TRANSISTOR AND REMAPPED LED DRIVER.ON PCB: RECONNECTED ISOLATED 3.3V POWER PLANE ON LAYER 3.
1.2.3.4.5.6.7.8.
TM
PurePath Console MotherBoard (RevD)
Board Layouts, Bill of Materials, and Schematic www.ti.com
Figure 26. PurePath Console Motherboard Schematic (10 of 11)
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www.ti.com Board Layouts, Bill of Materials, and Schematic
Figure 27. PurePath Console Motherboard Schematic (11 of 11)
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As noted in the EVM User’s Guide and/or EVM itself, this EVM and/or accompanying hardware may or may not be subject to the FederalCommunications Commission (FCC) and Industry Canada (IC) rules.
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【【Important Notice for Users of EVMs for RF Products in Japan】】This development kit is NOT certified as Confirming to Technical Regulations of Radio Law of Japan
If you use this product in Japan, you are required by Radio Law of Japan to follow the instructions below with respect to this product:
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TI assumes no liability for applications assistance or the design of Buyers’ products. Buyers are responsible for their products andapplications using TI components. To minimize the risks associated with Buyers’ products and applications, Buyers should provideadequate design and operating safeguards.
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In some cases, TI components may be promoted specifically to facilitate safety-related applications. With such components, TI’s goal is tohelp enable customers to design and create their own end-product solutions that meet applicable functional safety standards andrequirements. Nonetheless, such components are subject to these terms.
No TI components are authorized for use in FDA Class III (or similar life-critical medical equipment) unless authorized officers of the partieshave executed a special agreement specifically governing such use.
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TI has specifically designated certain components as meeting ISO/TS16949 requirements, mainly for automotive use. In any case of use ofnon-designated products, TI will not be responsible for any failure to meet ISO/TS16949.
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