Cirrus-logic CS43L21 Manuale Utente Scaricare il pdf (Pagina 51)

DS723F1 51

CS43L21

6.14 Limiter Threshold SZC Disable (Address 19h)

Note: The DATA_SEL[1:0] bits in reg09h must be set to ‘01’b to enable function control in this register.

Maximum Threshold (MAX[2:0])

Default: 000

Function:

Sets the maximum level, below full scale, at which to limit and attenuate the output signal at the attack rate.

Bass, Treble and digital gain settings that boost the signal beyond the maximum threshold may trigger an

attack.

Cushion Threshold (CUSH[2:0])

Default: 000

Function:

Sets a cushion level below full scale. This setting is usually set slightly below the maximum (MAX[2:0])

threshold. The Limiter uses this cushion as a hysteresis point for the input signal as it maintains the signal

below the maximum as well as below the cushion setting. This provides a more natural sound as the limiter

attacks and releases.

76543210

MAX2 MAX1 MAX0 CUSH2 CUSH1 CUSH0 LIM_SRDIS LIM_ZCDIS

MAX[2:0] Threshold

Setting

(dB)

000 0

001 -3

010 -6

011 -9

101 -12

101 -18

110 -24

111 -30

CUSH[2:0] Threshold