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Summary of Contents for Texas Instruments TAS5121
- Page 1 TAS5508−5121K8EVM Evaluation Module for the TAS5508B 8-Channel Digital Audio PWM Processor and the TAS5121 Digital Amplifier Power Output Stage User’s Guide...
- Page 2 TI product or service and is an unfair and deceptive business practice. TI is not responsible or liable for any such statements. Following are URLs where you can obtain information on other Texas Instruments products and application solutions:...
- Page 3 EVALUATION BOARD/KIT IMPORTANT NOTICE Texas Instruments (TI) provides the enclosed product(s) under the following conditions:. This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION, OR EVALUATION PURPOSES ONLY and is not considered by TI to be a finished end−product fit for general consumer use.
- Page 4 EVM schematic located in the EVM User’s Guide. When placing measurement probes near these devices during operation, please be aware that these devices may be very warm to the touch. Copyright © 2006, Texas Instruments Incorporated Mailing Address: Texas Instruments...
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Page 5: Read This First
About This Manual This manual describes the operation of the TAS5508−5121K8EVM evaluation module from Texas Instruments. How to Use This Manual This document contains the following chapters: Chapter 1 — Overview Chapter 2 — System Interfaces Chapter 3 — Protection Information About Cautions and Warnings This manual may contain cautions and warnings. -
Page 6: Related Documentation From Texas Instruments
Related Documentation From Texas Instruments The following table contains a list of data manuals that have detailed descriptions of the integrated circuits used in the design of the TAS5508−5121K8EVM. The data manuals can be obtained at the URL http://www.ti.com. Part Number... -
Page 7: Table Of Contents
Overview ............... . TAS5508−5121K8EVM Features PCB Key Map . - Page 8 3−2 TAS5121 Warning/Error Signal Decoding ........
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Page 9: Overview
The TAS5508−5121K8EVM PurePath Digital™ customer evaluation amplifier module demonstrates two audio integrated circuits, TAS5508B and TAS5121, from Texas Instruments (TI). The TAS5508BPAG is a high-performance 32-bit (24-bit input) multichannel PurePath Digital pulse width modulator (PWM) based on Equibit™ technology, with a new fully symmetrical AD modulation scheme. It accepts an input sample rate from 32 kHz to 192 kHz. -
Page 10: 1.1 Tas5508−5121K8Evm Features
Analog Input Control Interface PC Interface I2C Bus Optical I2S Bus Coaxial S/PDIF Input Example Texas Instruments Input−PC Board S and I C control connector for TI input board 2 Channel Headphone Output 2 Channel Rec Line Output TAS5508−5121K8EVM Module... -
Page 11: 1.2 Pcb Key Map
1.2 PCB Key Map The physical structure for the TAS5508−5121K8EVM is illustrated in Figure 1−2. Figure 1−2. Physical Structure for TAS5508−5121K8EVM (Rough Outline) J600 J500 Left Line Right Line Output Output (J950) (J951) Speaker Outputs Headphone Output (J900) J800 J700 J400 J300 J200... -
Page 13: System Interfaces
This chapter describes the TAS5508−5121K8EVM board in regards to power supplies and system interfaces. Topic Power Supply (PSU) Interface (J70, J71, and J73) Loudspeaker Connectors (J100 . . . J800) Line Out Connectors (J950 and J951) Headphone Connector (J900) ........Line Output Select (J50) . -
Page 14: Power Supply (Psu) Interface (J70, J71, And J73)
8-channel amplifier design. The recommended TAS5121 power-up sequence is shown in Figure 2−1. For proper TAS5121 operation, the RESET signal should be kept low during power up. RESET is pulled low during power up for 200 ms by the onboard reset generator (U73). -
Page 15: Psu Control Interface (J72)
Table 2−2. J71 Pin Description Pin No. Net-Name at Schematics V-HBRIDGE − Table 2−3. J70 Pin Description (Optional − Use to decrease of impedance to reach better performance) Pin No. Net-Name at Schematics V-HBRIDGE V-HBRIDGE Figure 2−3. J73 Pin Numbers Table 2−4. -
Page 16: Loudspeaker Connectors (J100
Loudspeaker Connectors (J100 . . . J800) Table 2−5. J72 Pin Description Pin No. Net-Name at Schematics — V-HBRIDGE RESET PSVC 2.2 Loudspeaker Connectors (J100 . . . J800) Both positive and negative speaker outputs are floating and may not be connected to ground (e.g., through an oscilloscope). Figure 2−5. -
Page 17: Headphone Connector (J900)
2.4 Headphone Connector (J900) Figure 2−7. J900 Pin Numbers Table 2−8. J900 Pin Description Pin No. Net-Name at Schematics OUT−L — OUT−R 2.5 Line Output Select (J50) Figure 2−8. J50 Pin Numbers Table 2−9. J50 Pin Description Pin No. Description 1−2 Line outputs enabled 2−3... -
Page 18: Control Interface (J30)
TAS5121 has high current or high temperature. See Chapter 3. Shutdown error reporting for rear left, rear right, surround left, surround right, and subwoofer channels. Activated if TAS5121 has high current or high temperature. See Chapter 3. Temperature warning. Activated if one or more TAS5121 has reached the temperature warning level. -
Page 19: Digital Audio Interface (J40)
2.8 Digital Audio Interface (J40) The digital audio interface contains digital audio signal data (I See the TAS5508B Data Manual (SLES162) for signal timing and details not explained in this document. Table 2−12.J40 Pin Description Net-Name at Schematics Description Ground MCLK Master clock input. -
Page 21: Protection
This chapter describes the short-circuit protection and fault-reporting circuitry of the TAS5121 device. Topic Short-Circuit Protection and Fault-Reporting Circuitry Device Fault Reporting ........ -
Page 22: 3.1 Short-Circuit Protection And Fault-Reporting Circuitry
Short-Circuit Protection and Fault-Reporting Circuitry 3.1 Short-Circuit Protection and Fault-Reporting Circuitry The TAS5121 is a self-protecting device that provides device fault reporting (including high-temperature protection and short-circuit protection). The TAS5121 is configured in back-end auto-recovery mode and, therefore, resets automatically after all errors (M1, M2, and M3 is set low). This means that the device restarts itself after an error occasion and reports shortly through SD1 and SD2 error signals. -
Page 23: 3.2 Device Fault Reporting
3.2 Device Fault Reporting The OTW and SD outputs from the TAS5121 indicate fault conditions. See the TAS5121 data sheet (SLES086) for a description of these pins. The temperature warning signals at the TAS5508−5121K8EVM board are wired-OR to one temperature warning signal [OTW – pin 22 in control interface connector (J30)].
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