參數(shù)資料
型號(hào)： TLV320AIC22PTR
廠商： TEXAS INSTRUMENTS INC
元件分類： 消費(fèi)家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PQFP48
封裝： ROHS COMPLIANT, PLASTIC, LQFP-48
文件頁(yè)數(shù)： 29/55頁(yè)
文件大?。?/td> 782K
代理商： TLV320AIC22PTR
TLV320AIC22
DUAL VOIP CODEC
SLAS281B – JULY 2000 – REVISED JUNE 2002
35
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
I2C-bus conditions (continued)
Master
Drives
ACK and Stop
Slave Drives
the Data
SCL
SDA
Start
A6
A5
A0
R/W ACK
R7
R6
R0
ACK
D7
D6
D0
Stop
Slave Address
Register Address
A6
A0
R/W ACK
ACK
Slave Address
00
10
Repeated
Start
Figure 17. I2C Read From TLV320AIC22 (Protocol A)
A6
A5
A0 R/W ACK
R7
R6
R0 ACK
D7
D0
A6
A0 R/W ACK
ACK
Master
Drives
ACK and Stop
Slave Drives
the Data
10
SCL
SDA
00
A5
Start
Stop Start
Stop
Slave Address
Register Address
Slave Address
NOTE: Slave = TLV320AIC22
Figure 18. I2C Read From TLV320AIC22 (Protocol B)
register functional summary
The following features are register programmable:
D Software reset
D Software power down
D Selection of digital loopback for both channels
D Selection of analog loopback for both channels
D Sample-rate mode selection and selection of I, N, and D (4 bits, 1 to 16) values for both channels
D Analog crosspoint control
Analog input for codec 1, selectable from five possible inputs
Analog input for codec 2, selectable from five possible inputs
Analog output for codec 1, selectable from four possible outputs
Analog output for codec 2, selectable from four possible outputs
D Handset input amplifier gain select (mute, 0/14/23 dB)
D Headset input amplifier gain select (mute, 0/14/23 dB)
D Handset and headset echo gain select (mute, –12 dB to –24 dB in steps of 2 dB)
D Microphone input amplifier gain select (mute, 42 dB, 32 dB, 20 dB, or 0 dB)
D Gain selection for the ADC input PGA (mute, 12 dB to –36 dB, in steps of 1.5 dB) and DAC output PGA
(mute, 12 dB to –36 dB, in steps of 1.5 dB) for both channels
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參數(shù)描述
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