參數(shù)資料
型號: MAX9888EWY+T
廠商: Maxim Integrated Products
文件頁數(shù): 97/115頁
文件大?。?/td> 0K
描述: IC CODEC AUDIO FLEXSOUND 63WLP
產(chǎn)品培訓(xùn)模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝: 2,500
系列: DirectDrive®, FLEXSOUND™
類型: D 類
輸出類型: 3 通道,帶立體聲耳機
在某負(fù)載時最大輸出功率 x 通道數(shù)量: 1.37W x 2 @ 8 歐姆; 40mW x 2 @ 16 歐姆
電源電壓: 2.8 V ~ 5.5 V
特點: 消除爆音,差分輸入,I²S,麥克風(fēng),靜音,關(guān)機
安裝類型: 表面貼裝
供應(yīng)商設(shè)備封裝: 63-WLP
封裝/外殼: 63-WFBGA,WLCSP
包裝: 帶卷 (TR)
配用: MAX9888EVKIT+-ND - KIT EVALUATION FOR MAX9888
Stereo Audio CODEC
with FlexSound Technology
MAX9888
82
Table 15. Automatic Level Control Registers
Parametric Equalizer
The parametric EQ contains five independent biquad
filters with programmable gain, center frequency, and
bandwidth. Each biquad filter has a gain range of Q12dB
and a center frequency range from 20Hz to 20kHz. Use a
filter Q less than that shown in Figure 21 to achieve ideal
frequency responses. Setting a higher Q results in non-
ideal frequency response. The biquad filters are series
connected, allowing a total gain of Q60dB.
Figure 21. Maximum Recommended Filter Q vs. Frequency
REGISTER
BIT
NAME
DESCRIPTION
0x41
7
ALCEN
ALC Enable
Enables ALC on both the DAI1 and DAI2 playback paths.
0 = Disabled
1 = Enabled
6
ALCRLS
ALC and Excursion Limiter Release Time
Sets the release time for both the ALC and Excursion Limiter. See the Excursion
Limiter section for Excursion Limiter release times. ALC release time is defined as the
time required to adjust the gain from 12dB to 0dB.
VALUE
ALC RELEASE TIME (s)
5
000
8
001
4
010
2
011
1
4
100
0.5
101
0.25
110
Reserved
111
Reserved
3
ALCMB
Multiband Enable
Enables dual-band processing with a 5kHz center frequency. SR1 and SR2 must be
configured properly to achieve the correct center frequency for each playback path.
0 = Single-band ALC
1 = Dual-band ALC
2
ALCTH
Low Signal Threshold
Selects the minimum signal level to be boosted by the ALC.
000 = -JdB (low-signal threshold disabled)
001 = -12dB
010 = -18dB
011 = -24dB
100 = -30dB
101 = -36dB
110 = -42dB
111 = -48dB
1
0
CENTER FREQUENCY (Hz)
MAXIMUM
RECOMMENDED
FILTER
Q
10,000
1000
1
10
100
1000
0.1
100
100,000
fs = 8kHz
fs = 48kHz
fs = 96kHz
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