參數(shù)資料
型號: PCM2902EG4
元件分類: Codec
英文描述: STEREO AUDIO CODEC WITH USB INTERFACE, SINGLE ENDED ANALOG INPUT/OUTPUT AND S/PDIF
中文描述: 立體聲音頻編解碼器帶USB接口,單端模擬輸入/輸出和S / PDIF
文件頁數(shù): 21/33頁
文件大?。?/td> 380K
代理商: PCM2902EG4
SLES035C MARCH 2002 REVISED MARCH 2007
www.ti.com
21
Analog Out
Analog In
Default
End-Point
End-Point #2
(IF #1)
Audio Streaming
Interface
End-Point #0
End-Point #4
(IF #2)
Audio Streaming
Interface
End-Point #5
(IF #3)
HID Interface
IT
TID1
FU
UID3
OT
TID5
OT
TID2
IT
TID4
Standard Audio Control Interface (IF #0)
PCM2900/2902
Figure 31. USB Audio Function Topology
Interface #0
Interface #0 is defined as the control interface. Alternative setting #0 is the only possible setting for interface
#0. Alternative setting #0 describes the standard audio control interface. A terminal constructs the audio control
interface. The PCM2900/2902 has five terminals as follows:
Input terminal (IT #1) for isochronous-out stream
Output terminal (OT #2) for audio analog output
Feature unit (FU #3) for DAC digital attenuator
Input terminal (IT #4) for audio analog input
Output terminal (OT #5) for isochronous-in stream
Input terminal #1 is defined as USB stream (terminal type 0x0101). Input terminal #1 can accept 2-channel audio
streams constructed by left and right channels. Output terminal #2 is defined as a speaker (terminal type
0x0301). Input terminal #4 is defined as a microphone (terminal type 0x0201). Output terminal #5 is defined
as a USB stream (terminal type 0x0101). Output terminal #5 can generate 2-channel audio streams constructed
by left and right channels. Feature unit #3 supports the following sound control features.
Volume control
Mute control
The built-in digital volume controller can be manipulated by an audio class specific request from 0 dB to –64 dB
in 1-dB steps. Changes are made by incrementing or decrementing by one step (1 dB) for every 1/f
S
time interval
until the volume level has reached the requested value. Each channel can be set for different values. The master
相關(guān)PDF資料
PDF描述
PCM3002EG 16/20-BIT SINGLE-ENDED ANALOG INPUT/OUTPUT STEREO AUDIO CODECS
PCM3002EG4 16/20-BIT SINGLE-ENDED ANALOG INPUT/OUTPUT STEREO AUDIO CODECS
PCM3002EGE6 16/20-BIT SINGLE-ENDED ANALOG INPUT/OUTPUT STEREO AUDIO CODECS
PCM3003EG4 16/20-BIT SINGLE-ENDED ANALOG INPUT/OUTPUT STEREO AUDIO CODECS
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PCM2903 制造商:TI 制造商全稱:Texas Instruments 功能描述:STEREO AUDIO CODEC WITH USB INTERFACE SINGLE ENDED ANALOG INPUT/OUTPUT AND S/P DIF
PCM2903B 制造商:TI 制造商全稱:Texas Instruments 功能描述:STEREO AUDIO CODEC WITH USB INTERFACE, SINGLE-ENDED ANALOG INPUT/OUTPUT, AND S/PDIF
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PCM2903BDBRMULT1 制造商:Texas Instruments 功能描述: