Instruction/ maintenance manual of the product TAS5121 Texas Instruments
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T AS5508−5121K8EVM Evaluation Module for the T AS5508B 8 -Channel Digital Audio PWM Pr ocessor and the T AS5121 Digital Amplifier Power Output S tage User ’ s G uide.
IMPORT ANT NOTICE T exas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice.
EV ALUA TION BOARD/KIT IMPORT ANT NOTICE T exas Instruments (TI) provides the enclosed product(s) under the following conditions:. This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT , DEMONSTRA TION, OR EV ALUA TION PURPOSES ONL Y and is not considered by TI to be a finished end − product fit for general consumer use.
EVM W ARNINGS AND RESTRICTIONS It is important to operate this EVM within the input voltage range of 0–29.5 V and the output voltage range of 15–20 V for the system supply . Exceeding the specified input range may cause unexpected operation and/or irreversible damage to the EVM.
iii Read This First Preface Read This First About This Manual This manual describes the operation of the T AS5508 − 5121K8EVM evaluation module from T exas Instruments.
iv Related Documentation From T exas Instruments The following table contains a list of data manuals that have detailed descriptions of the integrated circuits used in the design of the T AS5508 − 5121K8EVM. The data manuals can be obtained at the URL http://www .
v Contents Contents 1 Overview 1-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.1 T AS5508 − 5121K8EVM Features 1-2 . . . . . . . . . . . . . . . . .
vi Figures 1 − 1 Integrated PurePath Digital t Amplifier System 1-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 − 2 Physical Structure for the T AS5508 − 5121K8EVM (Rough Outline) 1-3 . . . . . . . . . . . . . . . . .
1-1 Overview Overview The T AS5508 − 5121K8EVM PurePath Digital ™ customer evaluation amplifier module demonstrates two audio integrated circuits, T AS5508B and T AS5121, from T exas Instruments (TI).
T AS5508 − 5121K8EVM Features 1-2 1.1 T AS5508 − 5121K8EVM Features - 8-channel PurePath Digital evaluation module - Stereo channel line output - Stereo headphone output - Self-contained protectio.
PCB Key Map 1-3 Overview 1.2 PCB Key Map The physical structure for the T AS5508 − 5121K8EVM is illustrated in Figure 1 − 2. Figure 1 − 2. Physical Structure for T AS5508 − 5121K8EVM (Rough Outline) Speaker Outputs Speaker Outputs T AS5508B 3.
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2-1 System Interfaces This chapter describes the T AS5508 − 5121K8EVM board in regards to power supplies and system interfaces. T opic Page 2.1 Power Supply (PSU) Interface (J70, J71, and J73) 2-2 . .
Power Supply (PSU) Interface (J70, J71, and J73) 2-2 2.1 Power Supply (PSU) Interface (J70, J71, and J73) The T AS5508 − 5121K8EVM module must be powered from external power supplies. High-end audio performance requires a stabilized power supply with low ripple voltage and low output impedance.
Power Supply (PSU) Interface (J70, J71, and J73) 2-3 System Interfaces T able 2 − 2. J71 Pin Description Pin No. Net-Name at Schematics Description 1 V -HBRIDGE Output-stage power supply 2 − System power supply 3 GND Ground 4 GND Ground T able 2 − 3.
Loudspeaker Connectors (J100 . . . J800) 2-4 T able 2 − 5. J72 Pin Description Pin No. Net-Name at Schematics Description 1 — Reserved for future use 2 V -HBRIDGE Sense of output power supply 3 GND Ground 4 RESET System reset (bidirectional) 5 PSVC Power-supply volume control signal 2.
Headphone Connector (J900) 2-5 System Interfaces 2.4 Headphone Connector (J900) Figure 2 − 7. J900 Pin Numbers (PCB connector top view) 2 3 4 1 T able 2 − 8. J900 Pin Description Pin No. Net-Name at Schematics Description 1 OUT − L Left headphone output 2 GND Ground 3 — For future use 4 OUT − R Right headphone output 2.
Control Interface (J30) 2-6 2.7 Control Interface (J30) This interface connects the T AS5508 − 5121K8EVM board to a TI input board. T able 2 − 1 1. J30 Pin Description Pin No. Net-Name at Schematics Description 1 GND Ground 2 PSVC − MCPU Power supply volume control from (mC) input board 3 GND Ground 4 RESET System reset (bidirectional).
Digital Audio Interface (J40) 2-7 System Interfaces 2.8 Digital Audio Interface (J40) The digital audio interface contains digital audio signal data (I 2 S), clocks, etc. See the T AS5508B Data Manual (SLES162) for signal timing and details not explained in this document.
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3-1 Protection Protection This chapter describes the short-circuit protection and fault-reporting circuitry of the T AS5121 device. T opic Page 3.1 Short-Circuit Protection and Fault-Reporting Circuitry 3-2 . . . . . . . . . . . 3.2 Device Fault Reporting 3-3 .
Short-Circuit Protection and Fault-Reporting Circuitry 3-2 3.1 Short-Circuit Protection and Fault-Reporting Circuitry The T AS5121 is a self-protecting device that provides device fault reporting (including high-temperature protection and short-circuit protection).
Device Fault Reporting 3-3 Protection 3.2 Device Fault Reporting Th e OTW and SD outputs from the T AS5121 indicate fault conditions. See the T AS5121 data sheet (SLES086) for a description of these pins.
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An important point after buying a device Texas Instruments TAS5121 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Texas Instruments TAS5121 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Texas Instruments TAS5121 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Texas Instruments TAS5121 you will learn all the available features of the product, as well as information on its operation. The information that you get Texas Instruments TAS5121 will certainly help you make a decision on the purchase.
If you already are a holder of Texas Instruments TAS5121, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Texas Instruments TAS5121.
However, one of the most important roles played by the user manual is to help in solving problems with Texas Instruments TAS5121. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Texas Instruments TAS5121 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
