參數(shù)資料
型號(hào): LM4935
廠商: National Semiconductor Corporation
元件分類: ADC
英文描述: Audio Sub-System with Dual-Mode Stereo Headphone and Mono High Efficiency Loudspeaker Amplifiers and Multi-Purpose ADC
中文描述: 音頻子系統(tǒng)的雙模單聲道立體聲耳機(jī)和揚(yáng)聲器放大器的高效率和多功能模數(shù)轉(zhuǎn)換器
文件頁數(shù): 35/112頁
文件大?。?/td> 5017K
代理商: LM4935
12.0 Status & Control Registers
(Continued)
12.14 AGC_3 CONFIGURATION REGISTER
This register is used to control the LM4935’s Automatic Gain Control. (Note 18)
TABLE 15. AGC_3 (0x0Ah)
Bits
4:0
Field
Description
AGC_HOLDTIME
Programs the amount of delay before the AGC algorithm begins to adjust the gain of the
microphone preamplifier.
AGC_HOLDTIME
00000
2
00001
2
00010
2
00011
2
00100
2
to 11100
2
11101
2
11110
2
11111
2
Programs the speed at which the AGC will reduce gains if it detects the input level is too large.
AGC_ATTACK
000
2
001
2
010
2
011
2
100
2
101
2
110
2
111
2
No. of speech segments
0
1
2
3
4 to 28
29
30
31
7:5
AGC_ATTACK
Step Time (ms)
32
64
128
256
512
1024
2048
4096
Note 18:
See the
AGC overview
.
L
www.national.com
35
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