CS42L51(2005) 查看數據表（PDF） - Cirrus Logic

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CS42L51
(Rev.:2005)

Low Power, Stereo CODEC with Headphone Amp

Cirrus Logic 

CS42L51

6.20 Limiter Threshold SZC Disable (Address 19h)

7

MAX2

6

MAX1

5

MAX0

4

CUSH2

3

CUSH1

2

CUSH0

1

0

LIM_SRDIS LIM_ZCDIS

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

MAX[2:0]

000

001

010

011

101

101

110

111

Threshold

Setting

(dB)

0

-3

-6

-9

-12

-18

-24

-30

Function:

Sets the maximum level, below fullscale, 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

CUSH[2:0] Threshold

Setting

(dB)

000

0

001

-3

010

-6

011

-9

101

-12

101

-18

110

-24

111

-30

Function:

Sets a cushion level below fullscale. 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.

DS679A2

65

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