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参数资料
| 型号： | TSC2301IZQZR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 消费家电 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PBGA120 |
| 封装： | GREEN, PLASTIC, VFBGA-120 |
| 文件页数： | 63/95页 |
| 文件大小： | 1322K |
| 代理商： | TSC2301IZQZR |
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AUDIO CODEC
TSC2301
SLAS371D – SEPTEMBER 2002 – REVISED AUGUST 2004
Audio Analog I/O
The TSC2301 has one pair of stereo inputs, LLINEIN and RLINEIN, and one mono audio input, MICIN. The part
also has one pair of stereo line outputs capable of driving a 10-k
load, VOUTL and VOUTR, as well as a stereo
headphone output amplifier capable of driving a 16-
load at up to 30 mW/channel, HPL and HPR. Finally, the
part includes a differential mono output capable of driving a 10-k
load per side, MONO+ and MONO-.
A special circuit has also been included for inserting a keyclick sound into the analog output signal path based on
register control. This functionality is intended for generating keyclick sounds for user feedback. This function is
controlled by Reg 04h, Pg 2, and is available when either of the DAC or analog bypass paths are enabled.
The common-mode voltage, VCM, used by the audio section can be powered up independently by the AVPD bit
(Bit 14, Reg 05h, Pg 2). Because the audio outputs are biased to this voltage, this voltage is slowly ramped up
when powered on, and there is an internally programmed delay of approximately 500 ms between powering up
this voltage and unmuting the analog audio signals of the TSC2301, in order to avoid pops and clicks on the
outputs. It is recommended to keep VCM powered up if the 500-ms delay is not tolerable.
Audio Digital I/O
Digital audio data samples can be transmitted between the TSC2301 and the CPU via the I2S bus (BCLK,
LRCLK, I2SDIN, I2SDOUT). However, all registers, including those pertaining to audio functionality, are only
accessible via the SPI bus. The I2S bus operates only in slave mode, meaning the BCLK and LRCLK must be
provided as inputs to the part. Four programmable modes for this serial bus are supported and can be set
through the I2SFM bits (Bits[1:0], Reg 00h, Pg 2) .
PCM Audio Interface
The 4-wire digital audio interface for TSC2301 is comprised of BCLK (pin 24), LRCLK (pin 25), I2SDIN (pin 26),
and I2SDOUT (pin 27). For the TSC2301, these formats are selected through the I2SFM bits in Reg 00h, Pg 2.
The following figures illustrate audio data input/output formats and timing.
The TSC2301 can accept 32-, 48-, or 64-bit clocks (BCKIN) in one clock of LRCIN. Only 16-bit data formats can
be selected when 32-bit clocks/LRCIN are applied.
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相关代理商/技术参数 |
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| TSC2302IRGZ | 功能描述:触摸屏转换器和控制器 Prog 4-Wire w/20-Bit Stereo Audio Codec RoHS:否 制造商:Microchip Technology 类型:Resistive Touch Controllers 输入类型:3 Key 数据速率:140 SPS 分辨率:10 bit 接口类型:4-Wire, 5-Wire, 8-Wire, I2C, SPI 电源电压:2.5 V to 5.25 V 电源电流:17 mA 工作温度:- 40 C to + 85 C 封装 / 箱体:SSOP-20 |
| TSC2302IRGZG4 | 功能描述:触摸屏转换器和控制器 Prog 4-Wire w/20-Bit Stereo Audio Codec RoHS:否 制造商:Microchip Technology 类型:Resistive Touch Controllers 输入类型:3 Key 数据速率:140 SPS 分辨率:10 bit 接口类型:4-Wire, 5-Wire, 8-Wire, I2C, SPI 电源电压:2.5 V to 5.25 V 电源电流:17 mA 工作温度:- 40 C to + 85 C 封装 / 箱体:SSOP-20 |
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