STA369BWS datasheet(71/92 Pages) STMICROELECTRONICS

Part #	STA369BWS

Description	2.1-channel 40-watt high-efficiency digital audio system Sound Terminal®

PDF	92 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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71 / 92 page

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STA369BWS

Figure 21. EQDRC scheme

Extended postscale range

Postscale is an attenuation by default. When PS48DB is set to 1, a 48-dB offset is applied to

the configured word, so postscale can act as a gain too.

Extended attack rate

The attack rate shown in Table 66 can be extended to provide up to 8 dB/ms attack rate on

both limiters.

Extended biquad selector

De-emphasis filter as well as 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 77. Bit PS48DB description

PS48DB

Mode

Postscale value is applied as defined in coefficient RAM

Postscale value is applied with +48-dB offset with respect to the coefficient

RAM value

Table 78. Bit XAR1 description

XAR1

Mode

Limiter1 attack rate is configured using Table 66

Limiter1 attack rate is 8 dB/ms

Table 79. Bit XAR2 description

XAR2

Mode

Limiter2 attack rate is configured using Table 66

Limiter2 attack rate is 8 dB/ms

STA369BWS Datasheet(PDF) 71 Page - STMicroelectronics