American Audio UCD-200 - REV 8-10 Specifications Page 35
- Page / 100
- Table of contents
- BOOKMARKS
Rated. / 5. Based on customer reviews
SLAS495A− JUNE 2006 − REVISED OCTOBER 2007
www.ti.com
35
Differential Smart Phone Interface
The TSC2111 provides a pin−compatible upgrade to TSC2101. One improvement is the ability to connect
differentially to a cell phone module, which improves noise immunity in the customers system. When configured
as differential input (bit D10, Register 06h, page 2) the CP_INP pin and BUZZ_IN/CP_INN pin function as a
differential input to the CP_INP PGA. In this mode, the gain of the CP_IN PGA is increased by +6 dB over the
default mode, so the PGA gain range is −28.5 dB to +18 dB. Also, in differential input mode. BUZZ_IN must
be disconnected from the BUZZ_IN PGA (bit D8, Register 25h, page 2).
When configured as differential output (bit D9, Register 06h, page 2), the CP_OUTP and VGND/CP_OUTN
pins function as a differential output pair. This differential output will only allow the signal on MICSEL (bits
D7−D5, Register 03h, page 2) to be routed out. When differential mode is used, capless headphone output must
be disabled (bit D3, Register 21h, page 2) and VGND must be powered down (bit D8, Register 05h, page 2).
Analog Mixer
The analog mixer can be used to route the analog input selected for the ADC through an analog volume control
and then mix it with the audio DAC output. The analog mixer feature is available only if the single ended
microphone input or the AUX input is selected as the input to the ADC, not when the ADC input is configured
in fully-differential mode. This feature is available even if the ADC and DAC are powered down. The analog
volume control has a range from +12 dB to –34.5 dB in 0.5 dB steps plus mute and includes soft−stepping logic.
The internal oscillator is used for soft−stepping whenever the ADC and DAC are powered down.
Keyclick
A special circuit has been included for inserting a square−wave signal into the analog output signal path based
on register control. This functionality is intended for generating keyclick sounds for user feedback. Register
04H/Page 2 contains bits that control the amplitude, frequency, and duration of the square−wave signal. The
frequency of the signal can be varied from 62.5 Hz to 8 kHz and its duration can be programmed from 2 periods
to 32 periods. Whenever this register is written, the square wave is generated and coupled into the audio output.
The keyclick enable bit D15 of control register 04H/Page 2 is reset after the duration of a keyclick is played out.
This capability is available even when the ADC and DAC are powered down.
OPERATION—TOUCH SCREEN
A resistive touch screen works by applying a voltage across a resistor network and measuring the change in
resistance at a given point on the matrix where a screen is touched by an input stylus, pen, or finger. The change
in the resistance ratio marks the location on the touch screen.
The TSC2111 supports the resistive 4-wire configurations (see Figure 25). The circuit determines location in
two coordinate pair dimensions, although a third dimension can be added for measuring pressure.
The 4-Wire Touch Screen Coordinate Pair Measurement
A 4-wire touch screen is constructed as shown in Figure 25. It consists of two transparent resistive layers
separated by insulating spacers.
- Serial Interface 1
- PACKAGE/ORDERING INFORMATION 2
- PIN ASSIGNMENTS 2
- Terminal Functions 3
- ABSOLUTE MAXIMUM RATINGS 4
- ELECTRICAL CHARACTERISTICS 5
- FUNCTIONAL BLOCK DIAGRAM 10
- SPI TIMING DIAGRAM 11
- TYPICAL TIMING REQUIREMENTS 11
- Figure 3. I 13
- TYPICAL CHARACTERISTICS 15
- OVERVIEW 19
- OPERATION—AUDIO CODEC 19
- D Word Select Signals 20
- D Bitclock (BCLK) Signal 20
- D 256-S Transfer Mode 20
- D Continuous Transfer Mode 20
- D Right Justified Mode 20
- D Left Justified Mode 21
- D DSP Mode 21
- D When PLL is disabled 22
- D When PLL is enabled 23
- D Set and enable PLL 24
- Automatic Gain Control (AGC) 25
- Table 3. AGC Settings 26
- D Headphone Drivers 29
- D Speaker Driver 31
- D Receiver Driver 31
- D Capless Interface 31
- D Cap Interface 32
- D Auto Detection 33
- D Headset Detection 34
- D Button Detection 34
- OPERATION—TOUCH SCREEN 35
- PLL enabled 39
- PLL disabled 39
- Temperature 44
- R + 50 KW 45
- VREF * Vsar 45
- DIGITAL INTERFACE 47
- PAGE 1 CONTROL REGISTER MAP 51
- REGISTER 01H: Status Register 52
- REGISTER 02H: Buffer Control 54
- REGISTER 04H: Reset Control 55
- REGISTER 0EH: Reserved 58
- PAGE 2 CONTROL REGISTER MAP 59
- REGISTER 04H: Audio Control 2 62
- REGISTER 06H: Audio Control 3 64
- REGISTER IDH: Audio Control 4 68
- REGISTER 20H: Audio Control 5 71
- REGISTER 21H: Audio Control 6 72
- REGISTER 22H: Audio Control 7 73
- REGISTER 23H: GPIO Control 74
- REGISTER 26H: Mic AGC Control 77
- Port Scan Operation 86
- PACKAGE OPTION ADDENDUM 93
- PACKAGE MATERIALS INFORMATION 95
- IMPORTANT NOTICE 100
Related products and manuals for CD players American Audio UCD-200 - REV 8-10
CD players American Audio CDS-1 User Manual
(12 pages)
(12 pages)
CD players American Audio HD88CC5 Specifications
(138 pages)
(138 pages)
CD players American Audio CDS-1 User Manual
(11 pages)
(11 pages)
CD players American Audio HD88CC5 Specifications
(118 pages)
(118 pages)
(28 pages)
(65 pages)
(28 pages)© 2020, manymanuals.com. All rights reserved. | 1.674 s |
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Comments to this Manuals