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参数资料
| 型号： | TAS3103IDBT |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 消费家电 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PDSO38 |
| 封装： | GREEN, PLASTIC, TSSOP-38 |
| 文件页数： | 102/148页 |
| 文件大小： | 1247K |
| 代理商： | TAS3103IDBT |
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samples must be logic 0 before a logic 0 is read. A read logic 0 on a given GPIO port is interpreted as a command
to increase or decrease volume. If a logic 0 is read, and the signal level into the GPIO port remains at logic 0 for another
GPIO_samp_int consecutive samples, a second logic 0 value is read.
For each logic 0 read, the volume is increased or decreased 0.5 dB. After two consecutive logic 0 readings, each logic
0 reading that follows results in the volume level increasing or decreasing 5 dB instead of 0.5 dB. Figure 222 shows
an example of activating a volume switch. For the example in Figure 222, GPIOFSCOUNT is set to 3 and
GPIO_samp_int is set to 2. It is also noted in Figure 222 that the parameter GPIO_samp_int only comes into play
on logic 0 valued samples. As soon as the GPIO sample goes to logic 1, the audio updating ceases.
2.8.2
GPIO Functionality—I2C Slave Mode
In the I2C slave mode, the GPIO ports can be used as true general-purpose ports. Each port can be individually
programmed, via the I2C bus, to be either an input or an output port. The default assignment for all GPIO ports, in
the I2C slave mode, is an input port.
When a given GPIO port is programmed as an output port, by setting the appropriate bit in the bit field GPIODIR
(19:16) of subaddress 0xEF to logic 1, the logic level output is set by the logic level programmed into the appropriate
bit in bit field GPIO_in_out (3:0) of subaddress 0xEE. The I2C bus then controls the logic output level for those GPIO
ports assigned as output ports.
When a given GPIO port is programmed as an input port by setting the appropriate bit in bit field GPIODIR (19:16)
of subaddress 0xEF to logic 0, the logic input level into the GPIO port is written to the appropriate bit in bit field
GPIO_in_out (3:0) of subaddress 0xEE. The I2C bus can then be used to read bit field GPIO_in_out to determine
the logic levels at the input GPIO ports. Whether a given bit in the bit field GPIO_in_out is a bit to be read via the I2C
bus or a bit to be written to via the I2C bus is strictly determined by the corresponding bit setting in bit field GPIODIR.
In the I2C slave mode, the GPIO input ports are read every GPIOFSCOUNT LRCLKs, as was the case in the I2C
master mode. However, parameter GPIO_samp_int does not have a role in the I2C slave mode. If a GPIO port is
assigned as an output port, a logic 0 bit value is supplied by the TAS3103 for this GPIO port in response to a read
transaction at subaddress 0xEE.
If the GPIO ports are left in their power turnon state default state, they are input ports with a weak pullup on the input
to VDSS.
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| TAS3103IDBTR | SPECIALTY CONSUMER CIRCUIT, PDSO38 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TAS3103IDBTR | 功能描述:音频 DSP Digital Audio 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 |
| TAS3103IDBTRG4 | 功能描述:音频 DSP Digital Audio 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 |
| TAS3108 | 制造商:TI 制造商全称:Texas Instruments 功能描述:AUDIO DIGITAL SIGNAL PROCESSORS |
| TAS3108DCP | 功能描述:音频 DSP 8-Channel Audio DSP 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 |
| TAS3108DCPG4 | 功能描述:音频 DSP 8-Channel Audio DSP 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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