- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄382553 > ST7597 (意法半導(dǎo)體) AC97 Audio Codec(AC97 音頻編解碼器) PDF資料下載
參數(shù)資料
| 型號(hào)： | ST7597 |
| 廠商： | 意法半導(dǎo)體 |
| 元件分類： | Codec |
| 英文描述： | AC97 Audio Codec(AC97 音頻編解碼器) |
| 中文描述： | AC97音頻編解碼器（AC97音頻編解碼器） |
| 文件頁數(shù)： | 14/20頁 |
| 文件大?。?/td> | 208K |
| 代理商： | ST7597 |
3.3.4 - PC Beep Register
(index 0Ah)
This controls the level for the PC BEEP input. Each
step corresponds to approximatively 3dB of attenu-
ation. The MSB of the register is the mute bit. When
this bit is set to 1 the level for that channel is set to
<-80dB.
The default value is 8000h, which corresponds to
0dB attenuation with mute on.
Mute
0
0
0
PV3..PV0
0000
1111
xxxx
Function
0dB gain
45dB gain
<-80dBdB gain
3.3.5 - Analog Mixer Input Gain Registers
(index 0Ch - 18h)
This controls the gain/attenuation for each of the
analog inputs. Each step corresponds to approxi-
matively 1.5dB. The MSB of the register is the mute
bit. When this bit is set to 1 the level for that channel
is set to <-80dB.
Register 0Eh (Mic volume register) has an extra bit
that is for a 20dB boost. When bit 6 is set to 1 the
20dB boost is on. The default value is 8008h,
which corresponds with 0dB gain with mute on.
The default value for the mono registers is 8008h,
which corresponds to 0dB gain with mute on. The
default value for stereo registers is 8808h, which
corresponds to 0dB gain with mute on.
Mute
0
0
0
1
Gx4..Gx0
00000
01000
11111
xxxxx
Function
+12dB gain
0dB gain
-34.5dB gain
<-80dB gain
3.3.6 - Record Select Control Register
(index 1Ah)
Used to select the record source independently for
right and left. See table for legend. The default
value is 0000h, which corresponds to mic in.
SR2..SR0
0
1
2
3
4
5
6
7
Right Record Source
Mic
CD in (R)
Video in (R)
Aux in (R)
Line in (R)
Stereo mix (R)
Mono mix
Phone
SL2..SL0
0
1
2
3
4
5
6
7
Left Record Source
Mic
CD in (L)
Video in (L)
Aux in (L)
Line in (L)
Stereo mix (L)
Mono mix
Phone
3.3.7 - Record Gain Register
(index 1Ch)
1Ch is for the stereo input. Each step corresponds
to 1.5dB, +22.5dB corresponds to 0F0Fh. The MSB
of the register is the mute bit. When this bit is set
to 1 the level for that channels is set < -80dB.
The default value is 8000h, which corresponds to
0dB gain with mute on.
Mute
0
0
1
Gx3..Gx0
00000
1111
xxxx
Function
0dB gain
+22.5dBgain
<-80dB gain
3.3.8 - General Purpose Register
(index 20h)
This register is used to control several miscellane-
ous functions of the ST7597 component. Below is
a summary of each bit and its function. The POP
bit controls the PCM out 3D bypass path (the pre
and post 3D PCM out paths are mutually exclu-
sive). The MS bit controls the mic selector.
This register should be read before writing to gen-
erate a mask for only the bit(s) that need to be
changed. The function default value is 0000h which
is all off. The LPB bit enables loopback of the ADC
output to the DAC input without involving the AC-
link, allowing for full system performance measure-
ments.
Bit
MIX
MS
LPB
Function
mono output select, 0 = mix, 1 = mic
mic select, 0 = mic1, 1 = mic2
ADC/DAC loopback mode
3.3.9 - 3D Control Register
(index 22h)
This register is not used by the 3D enhancement
implemented in this version of ST7597. A write to
this register has no effect and a read of this register
will give a 0800h.
FUNCTIONAL DESCRIPTION
(continued)
ST7597
14/20
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ST75C185 | LOW POWER MULTIPLE RS-232 DRIVERS AND RECEIVERS |
| ST75C185BD | LOW POWER MULTIPLE RS-232 DRIVERS AND RECEIVERS |
| ST75C185BDR | MOSFET, P, SOIC; Current, Id cont:9.8A; Case style:SOIC; Base number:4463; Charge, gate p channel:37nC; Pins, No. of:8; Resistance, Rds on @ Vgs = 10V:0.011R; Resistance, Rds on @ Vgs = 2.5V:0.02R; Resistance, Rds on @ Vgs = RoHS Compliant: Yes |
| ST75C185BN | LOW POWER MULTIPLE RS-232 DRIVERS AND RECEIVERS |
| ST75C185BTR | LOW POWER MULTIPLE RS-232 DRIVERS AND RECEIVERS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ST75C176 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:LOW POWER RS-485/RS-422 TRANSCEIVER |
| ST75C176_06 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:LOW POWER RS-485/RS-422 TRANSCEIVER |
| ST75C176B | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:LOW POWER RS784/RS422 TRANSCEIVER |
| ST75C176BD | 功能描述:緩沖器和線路驅(qū)動(dòng)器 Low Power Transcvr RoHS:否 制造商:Micrel 輸入線路數(shù)量:1 輸出線路數(shù)量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel |
| ST75C176BDR | 功能描述:緩沖器和線路驅(qū)動(dòng)器 Low Power Transcvr RoHS:否 制造商:Micrel 輸入線路數(shù)量:1 輸出線路數(shù)量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。