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| 型號(hào)： | TSC2100IDA |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PDSO32 |
| 封裝： | GREEN, PLASTIC, TSSOP-32 |
| 文件頁(yè)數(shù)： | 17/77頁(yè) |
| 文件大小： | 1079K |
| 代理商： | TSC2100IDA |
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TSC2100
SLAS378 NOVEMBER 2003
www.ti.com
24
Battery measurement can only be done in host controlled mode.
See the section Conversion Time Calculation for the TSC2100 and subsection Non Touch Measurement Operation in this
data sheet for timing diagrams and conversion time calculations.
Auxiliary Measurement
The auxiliary voltage input (AUX) can be measured in much the same way as the battery inputs. Applications might include
external temperature sensing, ambient light monitoring for controlling the back-light, or sensing the current drawn from the
battery. The auxiliary input can also be monitored continuously in scan mode.
Auxiliary measurement can only be done in host controlled mode.
See the section Conversion Time Calculation for the TSC2100 and subsection Non Touch Measurement Operation in this
data sheet for timing diagrams and conversion time calculations.
Port Scan
If making measurements of BAT1, BAT2, and AUX is desired on a periodic basis, the port scan mode can be used. This
mode causes the TSC2100 to sample and convert both battery inputs and the auxiliary input. At the end of this cycle, the
battery and auxiliary result registers contain the updated values. Thus, with one write to the TSC2100, the host can cause
three different measurements to be made.
Port scan can only be done in hostcontrolled mode.
See the section Conversion Time Calculation for the TSC2100 and subsection Port Scan Operation in this data sheet for
timing diagrams and conversion time calculations.
Hardware Reset
The device requires hardware reset (active low) pulse after power up for correct operation. A hardware reset pulse initializes
all the internal registers, counters and logic.
Hardware Power Down
By default the PWD/ADWS pin is configured as a hardware power down (active low) signal. The device powers down all
the internal circuitry to save power. All the register contents are maintained. Some counters maintain their value. The user
can optionally use this pin as ADWS (ADC word select) by register programming. Putting the TSC2100 into hardware
power-down mode also disables the pen-touch detect circuit.
OPERATIONAUDIO CODEC
Audio Analog I/O
The TSC2100 has one mono audio input (MICIN) typically used for microphone recording, and an auxiliary input (AUX)
that can be used as a second microphone or line input. The dual audio output drivers have programmable power level and
can be configured to drive up to 325 mW into an 8- speaker, or to drive 16- stereo headphones at over 30-mW per
channel, or to provide a stereo line-level output. The power level of the output drivers is controlled using BITD12 in control
register REG05H/Page2. The TSC2100 also has a virtual ground (VGND) output driver, which can optionally be used to
connect the return terminal of headphones, to eliminate the ac-coupling capacitors needed at the headphone output. The
VGND amplifier is controlled by BIT-D8 of REG05H/Page2. A special circuit has also been included in the TSC2100 to
insert a short keyclick sound into the stereo audio output, even when the audio DAC is powered down. The keyclick sound
is used to provide feedback to the user when a particular button is pressed or item is selected. The specific sound of the
keyclick can be adjusted by varying several register bits that control its frequency, duration, and amplitude.
Audio Digital Interface
Digital audio data samples are transmitted between the TSC2100 and the CPU via the serial bus (BCLK, ADWS, DOUT,
LRCK, DIN) that can be configured to transfer digital data in four different formats: right justified, left justified, I2S, and DSP.
The four modes are MSB-first and operate with variable word length of 16, 20, 24, or 32 bits. The digital audio serial bus
of the TSC2100 can operate in master or slave mode, depending on its register settings. The word-select signals (ADWS,
LRCK) and bit clock signal (BCLK) are configured as outputs when the bus is in master mode. They are configured as inputs
when the bus is in slave mode. The ADWS is representative of the sampling rate of the audio ADC and is synchronized
with DOUT. The LRCK is representative of the audio DAC sampling rate and is synchronized with DIN. Although the DOUT
signal can contain two channels of information (a left and right channel), the TSC2100 sends the same ADC data in both
channels.
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| TSC2100IRHBG4 | SPECIALTY CONSUMER CIRCUIT, PQCC32 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TSC2100IDAG4 | 功能描述:觸摸屏轉(zhuǎn)換器和控制器 Prog 4-Wire w/Ster Codec & Hdph/Spk Amp RoHS:否 制造商:Microchip Technology 類型:Resistive Touch Controllers 輸入類型:3 Key 數(shù)據(jù)速率:140 SPS 分辨率:10 bit 接口類型:4-Wire, 5-Wire, 8-Wire, I2C, SPI 電源電壓:2.5 V to 5.25 V 電源電流:17 mA 工作溫度:- 40 C to + 85 C 封裝 / 箱體:SSOP-20 |
| TSC2100IDAR | 功能描述:觸摸屏轉(zhuǎn)換器和控制器 Prog 4-Wire w/Ster Codec & Hdph/Spk Amp RoHS:否 制造商:Microchip Technology 類型:Resistive Touch Controllers 輸入類型:3 Key 數(shù)據(jù)速率:140 SPS 分辨率:10 bit 接口類型:4-Wire, 5-Wire, 8-Wire, I2C, SPI 電源電壓:2.5 V to 5.25 V 電源電流:17 mA 工作溫度:- 40 C to + 85 C 封裝 / 箱體:SSOP-20 |
| TSC2100IDARG4 | 功能描述:觸摸屏轉(zhuǎn)換器和控制器 Prog 4-Wire w/Ster Codec & Hdph/Spk Amp RoHS:否 制造商:Microchip Technology 類型:Resistive Touch Controllers 輸入類型:3 Key 數(shù)據(jù)速率:140 SPS 分辨率:10 bit 接口類型:4-Wire, 5-Wire, 8-Wire, I2C, SPI 電源電壓:2.5 V to 5.25 V 電源電流:17 mA 工作溫度:- 40 C to + 85 C 封裝 / 箱體:SSOP-20 |
| TSC2100IRHB | 功能描述:觸摸屏轉(zhuǎn)換器和控制器 Prog 4-Wire w/Ster Codec & Hdph/Spk Amp RoHS:否 制造商:Microchip Technology 類型:Resistive Touch Controllers 輸入類型:3 Key 數(shù)據(jù)速率:140 SPS 分辨率:10 bit 接口類型:4-Wire, 5-Wire, 8-Wire, I2C, SPI 電源電壓:2.5 V to 5.25 V 電源電流:17 mA 工作溫度:- 40 C to + 85 C 封裝 / 箱體:SSOP-20 |
| TSC2100IRHBG4 | 功能描述:觸摸屏轉(zhuǎn)換器和控制器 Prog 4-Wire w/Ster Codec & Hdph/Spk Amp RoHS:否 制造商:Microchip Technology 類型:Resistive Touch Controllers 輸入類型:3 Key 數(shù)據(jù)速率:140 SPS 分辨率:10 bit 接口類型:4-Wire, 5-Wire, 8-Wire, I2C, SPI 電源電壓:2.5 V to 5.25 V 電源電流:17 mA 工作溫度:- 40 C to + 85 C 封裝 / 箱體:SSOP-20 |
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