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參數(shù)資料
| 型號： | WM9703 |
| 廠商： | Wolfson Microelectronics |
| 英文描述： | TVS UNIDIRECT 400W 22V SMA |
| 中文描述： | AC97音頻編解碼器2.1版 |
| 文件頁數(shù)： | 23/30頁 |
| 文件大?。?/td> | 239K |
| 代理商： | WM9703 |
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Production Data
WM9703
WOLFSON MICROELECTRONICS LTD
PD Rev 3.4 January 2001
23
RECORD SELECT CONTROL REGISTER (INDEX 1Ah)
Used to select the record source independently for right and left (see Table 13). The default value is
0000h, which corresponds to Mic in.
SR2 TO 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 TO 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
Table 13 Record Select Register Function
RECORD GAIN REGISTERS (INDEX 1Ch AND 1Eh)
1Ch is for the stereo input and 1Eh is for the optional special purpose correlated audio Mic channel.
Each step corresponds to 1.5dB. 22.5dB corresponds to 0F0Fh and 000Fh respectively. The MSB of
the register is the mute bit. When this bit is set to 1, the level for that channel(s) is set at -
dB.
The default value is 8000h, which corresponds to 0dB gain with mute on.
MUTE
0
0
1
GX3...GX0
1111
0000
xxxxx
FUNCTION
+22.5dB gain
0dB gain
-
∞
dB gain
Table 14 Record Gain Register Function
GENERAL PURPOSE REGISTER (INDEX 20h)
This register is used to control several miscellaneous functions of the WM9703.
Below is a summary of each bit and its function. Only the 3D, MIX, MS and LPBK bits are supported
by the WM9703. The MS bit controls the Mic selector. The LPBK bit enables loopback of the ADC
output to the DAC input without involving the AC-link, allowing for full system performance
measurements. The function default value is 8000h which is all off.
BIT
FUNCTION
WM9703
SUPPORT
Yes, but fixed at 1
No
Yes
No
No
No
Yes
Yes
Yes
POP
ST
3D
LD
LLBK
RLBK
MIX
MS
LPBK
PCM out path and mute, 0 = pre-3D, 1 = post-3D
Simulated stereo enhancement, on/off 1 = on
3D stereo enhancement on/off, 1 = on
Loudness (bass boost) on/off, 1 = on
Local loop back - for modem, line codec
Remote loop back - for modem, line codec
Mono output select 0 = Mix, 1 = Mic
Mic select 0 = Mic1, 1 = Mic2
ADC/DAC/ loopback mode
Table 15 General Purpose Register Function
3D CONTROL REGISTER (INDEX 22h)
This register is used to control the centre and/or depth of the 3D stereo enhancement function built
into of the AC
’
97 component. Only the depth bits, DP0 to 3 have effect in the WM9703.
DP3
…
DP0
0
1
-
8
-
15
DEPTH
0%
Typical value
100%
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| WM9712L | AC97 Audio and Touchpanel CODEC |
| WM9712LEFL | AC97 Audio and Touchpanel CODEC |
| WM9712LEFT | AC97 Audio and Touchpanel CODEC |
| WM9712LEFV | AC97 Audio and Touchpanel CODEC |
| WM9712LSEFL | AC97 Audio and Touchpanel CODEC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| WM9703CFT/V | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:AC97 Revision 2.1 Audio Codec |
| WM9704CFT/V | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:4-Channel Surround Sound Codec |
| WM9704M | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:AMC97 Audio and Modem Codec |
| WM9704Q | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:4-Channel Surround Sound Codec |
| WM9705 | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:Multimedia AC97 CODEC with Integrated Touch Screen Controller |
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