sta381bw STMicroelectronics, sta381bw Datasheet - Page 86

• Manufacturer Part Number: sta381bw
• Description: Sound Terminal 2.1-channel High-efficiency Digital Audio System
• Manufacturer: STMicroelectronics

Register description: New Map
6.26.3
Note:
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Table 77.
Extended BIQUAD selector
Bass and treble controls can be configured as user-defined filters when equalization
coefficients link is activated (BQL = 1) and the corresponding BQx bit is set to 1.
Table 78.
Table 79.
Table 80.
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 in
The BQx bits are ignored if BQL = 0 or if DEMP = 1 (relevant for BQ5) or CxTCB = 1
(relevant for BQ6 and BQ7).
XAR2
BQ5
BQ6
BQ7
0
1
0
1
0
1
0
1
Extended attack rate, limiter 2
Extended biquad selector, biquad 5
Extended biquad selector, biquad 6
Extended biquad selector, biquad 7
Table
74.
Limiter2 attack rate is configured using
Limiter2 attack rate is 8 dB/ms
Reserved
User-defined biquad 5 coefficients are selected
Pre-set bass filter selected as per
User-defined biquad 6 coefficients are selected
Pre-set treble filter selected as per
User-defined biquad 7 coefficients are selected
Doc ID 018835 Rev 2
Mode
Mode
Mode
Mode
Table 67
Table 67
Table 68
STA381BW