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STA382BW 数据表(PDF) 87 Page - STMicroelectronics

部件名 STA382BW
功能描述  Sound Terminal® 2.1-channel high-efficiency digital audio system
PDF  172 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

STA382BW 数据表(HTML) 87 Page - STMicroelectronics

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STA382BW
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Doc ID 022783 Rev 1
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Table 77.
Extended attack rate, limiter 2
6.26.3
Extended biquad selector
Bass and treble controls can be configured as user-defined filters when the equalization
coefficients link is activated (BQL = 1) and the corresponding BQx bit is set to 1.
Table 78.
Extended biquad selector, biquad 5
Table 79.
Extended biquad selector, biquad 6
Table 80.
Extended biquad selector, biquad 7
When filters from the 5th to 7th are configured as user-programmable, the corresponding
coefficients are stored respectively in addresses 0x20-0x24 (BQ5), 0x25-0x29 (BQ6), 0x2A-
0x2E (BQ7) as given in Table 74.
Note:
The BQx bits are ignored if BQL = 0 or if DEMP = 1 (relevant for BQ5) or CxTCB = 1
(relevant for BQ6 and BQ7).
XAR2
Mode
0
Limiter2 attack rate is configured using Table 68
1
Limiter2 attack rate is 8 dB/ms
BQ5
Mode
0
Reserved
1
User-defined biquad 5 coefficients are selected
BQ6
Mode
0
Pre-set bass filter selected as per Table 67
1
User-defined biquad 6 coefficients are selected
BQ7
Mode
0
Pre-set treble filter selected as per Table 67
1
User-defined biquad 7 coefficients are selected



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