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TWL1109PBSR Datasheet

  • TWL1109PBSR

  • PCM CODEC|SINGLE|TQFP|32PIN|PLASTIC

  • 27頁

  • ETC

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TWL1109
VOICE-BAND AUDIO PROCESSOR (VBAP鈩?
SLWS095 鈥?MARCH 2000
D
D
D
D
D
2.7-V Operation
Two Differential Microphone Inputs, One
Differential Earphone Output, and One
Single-Ended Earphone Output
Programmable Gain Amplifiers for
Transmit, Receive, Sidetone, and Volume
Control
Earphone Mute and Microphone Mute
On-chip I
2
C-Bus, Which Provides a Simple,
Standard, Two-Wire Serial Interface With
Digital ICs
D
D
D
D
D
Programmable for 15-Bit Linear Data or
8-Bit Companded (碌-Law or A-Law) Mode
32-Terminal TQFP Package
Designed for Analog and Digital Wireless
Handsets and Telecommunications
Applications
Dual-Tone Multifrequency (DTMF)
Pulse Density Modulated (PDM) Buzzer
Output
description
The voice-band audio processor (VBAP) is designed to perform the transmit encoding analog/digital (A/D)
conversion and receive decoding digital/analog (D/A) conversion, together with transmit and receive filtering,
for voice-band communications systems. The device operates in either the 15-bit linear or 8-bit companded
(碌-law
or A-Law) mode, which is selectable through the I
2
C interface. From a 2.048-MHz master clock input,
the VBAP generates its own internal clocks.
PBS PACKAGE
(TOP VIEW)
24 23 22 21 20 19 18 17
PLLVSS
VSS
MCLK
RESET
PWRUPSEL
BUZZCON
PCMSYN
PCMCLK
PLLV
DD
EARV
SS
EAR1ON
EARV
DD
EAR1OP
EARV
SS
EAR2O
AV
DD
25
26
27
28
29
30
31
32
1
2
3
4 5 6 7
8
16
15
14
13
12
11
10
9
PCMO
PCMI
DV
SS
DV
DD
SCL
SDA
NC
NC
NC 鈥?No internal connection
This device contains circuits to protect its inputs and outputs against damage due to high static voltages or electrostatic fields. These
circuits have been qualified to protect this device against electrostatic discharges (ESD) of up to 2 kV according to MIL-STD-883C,
Method 3015; however, it is advised that precautions be taken to avoid application of any voltage higher than maximum-rated
voltages to these high-impedance circuits. During storage or handling, the device leads should be shorted together or the device
should be placed in conductive foam. In a circuit, unused inputs should always be connected to an appropriated logic voltage level,
preferably either VCC or ground. Specific guidelines for handling devices of this type are contained in the publication
Guidelines for
Handling Electrostatic-Discharge-Sensitive (ESDS) Devices and Assemblies
available from Texas Instruments.
VBAP is a trademark of Texas Instruments Incorporated.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
MBIAS
MIC1P
MIC1N
MIC2P
MIC2N
REXT
NC
AVSS
Copyright
漏
2000, Texas Instruments Incorporated
POST OFFICE BOX 655303
Powered by ICminer.com Electronic-Library Service CopyRight 2003
鈥?/div>
DALLAS, TEXAS 75265
1

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