參數(shù)資料
型號(hào)： TAS3002
廠商： TEXAS INSTRUMENTS INC
元件分類： 消費(fèi)家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PQFP48
封裝： QFP-48
文件頁(yè)數(shù)： 29/54頁(yè)
文件大?。?/td> 266K
代理商： TAS3002
71
7 Microcontroller Operation
The TAS3002 device contains an internal microcontroller programmed by Texas Instruments to perform
housekeeping and interface functions. Additionally, it handles I2C communication and general purpose input
functions.
7.1
General Description
The microcontroller uses a 256fS system clock and can access up to 8K bytes of memory. It interfaces with the digital
audio interface I2C master/slave for downloading data and coefficients. It also interfaces with two internal DSPs for
transferring coefficients and other information.
The TAS3002 coefficients are loaded through I2C in the master or slave mode. Standard audio processing functions
(volume, bass, and treble) can be controlled/activated through external switches connected to the six GPI terminals.
Upon reset, the internal microcontroller sets all coefficients and audio parameters to the default values. See
Section 7.2.2 for default values.
If the TAS3002 address is 68h (ADDR_SEL=0), it becomes the bus master device and attempts to load parameters
and coefficients from the external EEPROM. If no EEPROM is present, the TAS3002 device remains in its default
condition. If addresses other than 68h/69h are set, the TAS3002 device only operates as an I2C slave device.
If the microcontroller determines the TAS3002 device has an I2C address of 68h/69h and the EEPROM is present,
the microcontroller downloads coefficients from the EEPROM. Once the download is complete, it enables the serial
audio in the mode defined by an I2C write to the MCR to transfer data into and out of the device. Before reading the
EEPROM, the serial audio port defaults to I2S mode.
The TAS3002 device allows the user to update volume, bass, and treble dynamically by an I2C slave command or
by a simple GPI input. The GPI can select volume up and down, bass/treble up and down, or digital equalizations.
Up to five different equalizations (that is, flat, jazz, rock, voice, etc.) can be stored in the external EEPROM. Also,
DRCE, MCR1, MCR2, and loudness contour are enabled and disabled by I2C.
When the TAS3002 device operates in the I2C master mode, it echoes changes to all of its functions to other I2C
addresses that are defined in its external EEPROM. If no addresses are defined, it does not echo.
7.2
Power-Up/Power-Down Reset
7.2.1
Power-Up Sequence
An active low on terminal 6 (RESET) while MCLK is running resets the internal microcontroller and DSPs. RESET
synchronizes internally and can be asserted asynchronously or with the simple RC circuit in Figure 71. On reset,
SCL and SDA go to a high-impedance state. If the I2C address is set to 68h, approximately 400
s after RESET
returns to a 1, the device sends a one-byte query via I2C to look for an EEPROM. If an EEPROM is found, the TAS3002
becomes an I2C master; otherwise, it becomes an I2C slave. When using address 68h in the slave mode, an external
master must wait until after the EEPROM query or else bus contention and improper operation occur.
I2C address x6Ah does not query the bus for an EEPROM. The address for the EEPROM is A0h.
7.2.2
Reset
The TAS3002 device has an asynchronous reset terminal (RESET). This reset is synchronized with various clocks
used in this device to generate a synchronous internal reset. Upon reset, the TAS3002 device goes through the
following process:
Clears all the RAM memory content
相關(guān)PDF資料
PDF描述
TAS3004PFB SPECIALTY CONSUMER CIRCUIT, PQFP48
TAS3004PFBR SPECIALTY CONSUMER CIRCUIT, PQFP48
TAS3004PFBG4 SPECIALTY CONSUMER CIRCUIT, PQFP48
TAS3004PFBRG4 SPECIALTY CONSUMER CIRCUIT, PQFP48
TAS3103DBT SPECIALTY CONSUMER CIRCUIT, PDSO38
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TAS3002PFB 功能描述:音頻 DSP Digital Audio Processor w/ Codec RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風(fēng)格: 封裝 / 箱體: 封裝:Tube
TAS3002PFBG4 功能描述:音頻 DSP Digital Audio Processor w/ Codec RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風(fēng)格: 封裝 / 箱體: 封裝:Tube
TAS3002PFBR 功能描述:音頻 DSP Digital Audio Processor w/ Codec RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風(fēng)格: 封裝 / 箱體: 封裝:Tube
TAS3002PFBRG4 功能描述:音頻 DSP Digital Audio Processor w/ Codec RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風(fēng)格: 封裝 / 箱體: 封裝:Tube
TAS3004 制造商:TI 制造商全稱:Texas Instruments 功能描述:Digital Audio Processor With Codec
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*