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| 型号： | TAS5518CPAG |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 消费家电 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP64 |
| 封装： | GREEN, PLASTIC, TQFP-64 |
| 文件页数： | 14/103页 |
| 文件大小： | 2007K |
| 代理商： | TAS5518CPAG |
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2.2.3
I
2C Serial-Control Interface
2.2.4
Device Control
2.2.5
Digital Audio Processor (DAP)
2.2.5.1 TAS5518C Audio-Processing Configurations
TAS5518C
8-Channel Digital Audio PWM Processor
SLES238A – SEPTEMBER 2008 – REVISED JULY 2009
www.ti.com
Table 2-1. Serial Data Formats
RECEIVE SERIAL DATA FORMAT
WORD LENGTH
Right-justified
16
Right-justified
20
Right-justified
24
I2S
16
I2S
20
I2S
24
Left-justified
16
Left-justified
20
Left-justified
24
Serial data is input on SDIN1, SDIN2, SDIN3, and SDIN4. The TAS5518C accepts 16-, 20-, or 24-bit
serial data at 32, 38, 44.1, 48, 88.2, 96, 176.4, or 192 kHz in left-justified, I2S, or right-justified format.
Data is input using a 64-fS SCLK clock and an MCLK rate of 128, 192, 256, 384, 512, or 768 fS, up to a
maximum of 50 MHz. The clock speed and serial data format are I2C configurable.
The TAS5518C has an I2C serial-control slave interface (write address = 0x36 and read address = 0x37)
to receive commands from a system controller. The serial-control interface supports both normal-speed
(100-kHz) and high-speed (400-kHz) operations without wait states. Because the TAS5518C has a crystal
time base, this interface operates even when MCLK is absent.
The serial control interface supports both single-byte and multiple-byte read/write operations for status
registers and the general control registers associated with the PWM. However, for the DAP
data-processing registers, the serial control interface also supports multiple-byte (4-byte) write operations.
The I2C supports a special mode which permits I2C write operations to be broken up into multiple
data-write operations that are multiples of 4 data bytes. These are 6-byte, 10-byte, 14-byte, 18-byte, etc.,
write operations that are composed of a device address, read/write bit, subaddress, and any multiple of 4
bytes of data. This permits the system to incrementally write large register values without blocking other
I2C transactions. In order to use this feature, the first block of data is written to the target I2C address, and
each subsequent block of data is written to a special append register (0xFE) until all the data is written
and a stop bit is sent. An incremental read operation is not supported.
The TAS5518C control section provides the control and sequencing for the TAS5518C. The device control
provides both high- and low-level control for the serial control interface, clock and serial data interfaces,
digital audio processor, and pulse-width modulator sections.
The DAP arithmetic unit is used to implement all audio-processing functions: soft volume, loudness
compensation, bass and treble processing, dynamic range control, channel filtering, and input and output
mixing. Figure 2-1 shows the TAS5518C DAP architecture.
The DAP accepts 24-bit data from the serial data interface and outputs 32-bit data to the PWM section.
The DAP supports two configurations, one for 32-kHz to 96-kHz data and one for 176.4-kHz to 192-kHz
data.
The 32-kHz to 96-kHz configuration supports eight channels of data processing that can be configured
either as eight channels, or as six channels with two channels for separate stereo line outputs.
The 176.4-kHz to 192-kHz configuration supports three channels of signal processing with five channels
passed through (or derived from the three processed channels).
Description
18
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相关代理商/技术参数 |
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| TAS5518CPAGR | 功能描述:音频 DSP 8Ch Dig Audio PWM Proc RoHS:否 制造商:Texas Instruments 工作电源电压: 电源电流: 工作温度范围: 安装风格: 封装 / 箱体: 封装:Tube |
| TAS5518PAG | 功能描述:音频 DSP 8 Ch Digital Audio PWM Processor RoHS:否 制造商:Texas Instruments 工作电源电压: 电源电流: 工作温度范围: 安装风格: 封装 / 箱体: 封装:Tube |
| TAS5518PAG | 制造商:Texas Instruments 功能描述:Pulse Width Modulation (PWM) Controller |
| TAS5518PAGG4 | 功能描述:音频 DSP 8 Ch Digital Audio PWM Processor RoHS:否 制造商:Texas Instruments 工作电源电压: 电源电流: 工作温度范围: 安装风格: 封装 / 箱体: 封装:Tube |
| TAS5518PAGR | 功能描述:音频 DSP 8 Ch Digital Audio PWM Processor RoHS:否 制造商:Texas Instruments 工作电源电压: 电源电流: 工作温度范围: 安装风格: 封装 / 箱体: 封装:Tube |
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