參數(shù)資料
型號(hào)： STA304A
廠(chǎng)商： 意法半導(dǎo)體
英文描述： 20 POS IMAGE SENSOR SOCKT
中文描述： 數(shù)字音頻處理器多通道的DDX⑩
文件頁(yè)數(shù)： 22/30頁(yè)
文件大?。?/td> 338K
代理商： STA304A
STA304A
22/30
12.5Extended Audio ID Register (add. 28h)
The Extended Audio ID is a read only register that identifies which extended audio features are supported (See
AC'97 revision 2.1 specification, section A.2.1). The extended features supported are Variable Rate PCM Audio
(VRA), Double- Rate PCM Audio (DRA), PCM Center (CDAC), PCM Surround (SDAC) and PCM LFE (LDAC).
Codec_ID0 report the status of SA pin. Codec_ID1 always report 0. Hence, the configurations are primary (00)
if SA pin is 0 or Secondary (01) if SA pin is 1.
12.6Extended Audio Status and Control Register (add. 2Ah)
VRA= 1 enables Variable Rate Audio mode (sample rate control registers and SLOTREQ signaling)
DRA= 1 enables Double- Rate Audio mode
Bits D9- D6 are read only status of the extended audio feature readiness. When a write request is issued the
actual data written into the RAM register is 'xxxxxx0111xxxxxx'.
For more details refer to AC’97 rev 2.1, section A.2.2
12.7Audio Sample Rate Control Registers (add. 2Ch - 34h)
In VRA mode, two frequencies are supported 48000(BB80h) Hz and 44100(AC44h) Hz. If one of these value
written to the 2Ch register, that value will be echoed back when read, otherwise the closest (higher in case of a
tie) sample rate supported is returned. The content of 2Eh and 30h registers is copied from the 2Ch register.
If the Double Rate Audio (DRA) mode is active, the sample rate programmed will be multiplied by 2x. For ex-
ample: When running at 88.2 kHz, the DRA bit will be programmed to 1, and the sample rate programmed would
be 44.100.
The default value after cold or warm register reset for these registers (BB80h) is 48 kHz.
The content of the ADC sample rate registers (32h and 34h) stays always BB80h.
12.86-Channel Volume Control Register (add. 36h - 38h)
These read/write registers control the output volume of the optional four PCM channels, and values written to
the fields behave the same as the Play Master Volume Register (Index 02h), which offers attenuation but no
gain. There is an independent mute (1= on) for each channel.
The default value after reset for this registers (8080h) corresponds to 0 dB attenuation with mute on.
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
0
ID0
0
0
0
0
0
1
1
1
0
0
0
0
1
1
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
0
1
1
1
DRA
VRA
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
SR15
SR14
SR13
SR12
SR11
SR10
SR9
SR8
SR7
SR6
SR5
SR4
SR3
SR2
SR1
SR0
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
Mute
LFE6
LFE5
LFE4
LFE3
LFE2
LFE1
LFE0
Mute
CNT6
CNT5
CNT4
CNT3 CNT2 CNT1
CNT0
Mute
LSR6
LSR5
LSR4
LSR3
LSR2
LSR1
LSR0
Mute
RSR6
RSR5
RSR4
RSR3
RSR2
RSR1
RSR0
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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STA305A 制造商:SANKEN 制造商全稱(chēng):Sanken electric 功能描述:PNP Darlington 3-phase motor drive
STA306 功能描述:多媒體雜項(xiàng) AUDIO SYSTEMS RoHS:否 制造商:Texas Instruments 類(lèi)型: 通道數(shù)量: 轉(zhuǎn)換速率:540 Mbps 分辨率: 封裝 / 箱體:SOIC-16 封裝:Tube
STA30613TR 功能描述:多媒體雜項(xiàng) AUDIO SYSTEMS RoHS:否 制造商:Texas Instruments 類(lèi)型: 通道數(shù)量: 轉(zhuǎn)換速率:540 Mbps 分辨率: 封裝 / 箱體:SOIC-16 封裝:Tube
STA308 功能描述:音頻 DSP Digital Audio Procsr RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風(fēng)格: 封裝 / 箱體: 封裝:Tube
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