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參數資料
| 型號： | TSC2101IRGZR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQCC48 |
| 封裝： | GREEN, PLASTIC, VQFN-48 |
| 文件頁數： | 22/95頁 |
| 文件大小： | 1217K |
| 代理商： | TSC2101IRGZR |
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TSC2101
SLAS392D JUNE 2003 REVISED MAY 2005
www.ti.com
29
For the cap interface, this feature can be disabled by setting bit D0 of control register 20H/page 2. In the case
of the cap-less interface, VGND short circuit protection must also be disabled, which can be achieved by setting
bit D4 of control register 21H/page 2.
The TSC2101 implements a pop reduction scheme to reduce audible artifacts during powerup and powerdown
of headphone drivers. The scheme can be controlled by programming bits D5 and D4 of control register
25H/page 2. By default, the driver pop reduction scheme is enabled and can be disabled by programming bit
D5 of control register 25H/page 2 to 1. When this scheme is enabled and the virtual ground connection is not
used (VGND amplifier is powered down), the audio output driver slowly charges up any external ac-coupling
capacitors to reduce audible artifacts. Bit D4 of control register 25H/page 2 provides control of the charging time
for the ac-coupling capacitor as either 0.8 sec or 4 sec. When the virtual ground amplifier is powered up and
used, the external ac-coupling capacitor is eliminated, and the powerup time becomes 1 ms. This scheme takes
effect whenever any of the headphone drivers are powered up.
D Speaker Driver
The TSC2101 has an integrated speaker driver (OUT8POUT8N) capable of driving an 8 differential load.
The speaker driver, powered directly from the battery supply (3.5 V to 4.2 V) on the BVDD pin can deliver 400
mW at 3.9 V supply. It allows connecting one or both DAC channel to speaker driver. The TSC2101 also has a
short circuit protection feature for the speaker driver which can be enabled by setting bit D5 of control register
21H/page 2.
D Receiver Driver
The TSC2101 includes a receiver driver (SPK1OUT32N), which can drive a 32 differential load. It is
capable of delivering 82 mW into a 32 load. The TSC2101 does not allow both the receiver driver and
headphone drivers to be turned on at the same time. Also, when the receiver driver is being used, the
headphone driver load must be disconnected.
Headset Interface
The TSC2101 supports all standard headset interfaces. It is capable of interfacing with 3-wire stereo headset,
3-wire cellular headset and 4-wire stereo-cellular headsets. It supports both capacitor-coupled (cap) and
capacitor-less (capless) interface for headset through software programming.
D Capless Interface
Figure 22 shows the connection diagram to the TSC2101 for capless interface. VGND acts as a ground of
headset jack. Voltage at VGND is 1.5 V and MICBIAS_HED voltage is programmed to 3.3 V. With this, the
voltage across microphone is configured to be 1.8 V. In order to minimize the effect of routing resistance on
VGND inside the device and on the printed circuit board (PCB), SPKFC should be shorted to VGND at the
jack. This reduces crosstalk from speaker to microphone because of common ground as VGND.
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相關代理商/技術參數 |
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| TSC2101IRGZRG4 | 功能描述:觸摸屏轉換器和控制器 Prog 4-Wire w/6 Audio Inputs RoHS:否 制造商:Microchip Technology 類型:Resistive Touch Controllers 輸入類型:3 Key 數據速率: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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| TSC2102 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:PROGRAMMABLE TOUCH SCREEN CONTROLLER WITH INTEGRATED STEREO AUDIO DAC AND HEADPHONE AMPLIFIER |
| TSC21020F | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Rad. Hard 32/40-bit IEEE Floating Point DSP |
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