參數(shù)資料
型號(hào): TWL1102PBSR
廠商: TEXAS INSTRUMENTS INC
元件分類: 消費(fèi)家電
英文描述: SPECIALTY CONSUMER CIRCUIT, PQFP32
封裝: PLASTIC, TQFP-32
文件頁(yè)數(shù): 25/29頁(yè)
文件大?。?/td> 387K
代理商: TWL1102PBSR
TWL1102
VOICE-BAND AUDIO PROCESSOR (VBAP
)
SLVS264 – NOVEMBER 1999
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Terminal Functions
TERMINAL
NAME
NO.
I/O
DESCRIPTION
NAME
PFB
I/O
DESCRIPTION
AVDD
32
I
Analog positive power supply
AVSS
8
I
Analog negative power supply
BUZZCON
19
O
Buzzer output, a pulse-density modulated signal to apply to external buzzer driver
DVDD
13
I
Digital positive power supply
DVSS
14
I
Digital negative power supply
EAR1ON
27
O
Earphone 1 amplifier output (–)
EAR1OP
29
O
Earphone 1 amplifier output (+)
EAR2O
31
O
Earphone 2 amplifier output
EARVDD
28
I
Analog positive power supply for the earphone amplifiers
EARVSS
30, 26
I
Analog negative power supply for the earphone amplifiers
MBIAS
1
O
Microphone bias supply output, no decoupling capacitors. If MBIAS is turned off the MBIAS terminal becomes a
digital output signal for an external MIC_OFF function. When used as a digital output, logic high indicates XMIT
disable, logic low XMIT inable.
MCLK
22
I
Master system clock input (2.048 MHz) (digital)
MIC1P
2
I
MIC1 input (+)
MIC1N
3
I
MIC1 input (–)
MIC2P
4
I
MIC2 input (+)
MIC2N
5
I
MIC2 input (–)
PCMI
15
I
Receive PCM input
PCMO
16
O
Transmit PCM output
PCMSYN
18
I
PCM frame sync
PCMCLK
17
I
PCM data clock
PLLVSS
24
I
PLL negative power supply
PLLVDD
25
I
PLL digital power supply
PWRUPSEL
20
I
Selects the power-up default mode
REXT
6
I/O
Internal reference current setting terminal – use precision 100
-k
resistor and no filtering capacitors
RESET
21
I
Active low reset
SCL
12
I
I2C-bus serial clock – this input is used to synchronize the data transfer from and to the VBAP
SDA
11
I/O
I2C-bus serial address/data input/output – this is a bidirectional terminal used to transfer register control
addresses and data into and out of the CODEC. It is an open
-drain terminal and therefore requires a pull-up
resistor to VDD (typical 10 k for 100 kHz)
VSS
23
I
Ground return for bandgap internal reference
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