CS4385(2004) View Datasheet(PDF) - Cirrus Logic

Part Name

Description

MFG CO.

CS4385
(Rev.:2004)

114 dB, 192 kHz 8-Channel D/A Converter

Cirrus Logic 

CS4385

When set to 1 (default), an un-mute will be performed after executing a filter mode change, after a

LRCK/MCLK ratio change or error, and after changing the Functional Mode. This un-mute is effected, sim-

ilar to attenuation changes, by the Soft and Zero Cross bits in the Volume and Mixing Control register.

When set to 0, an immediate un-mute is performed in these instances.

Note: For best results, it is recommended that this feature be used in conjunction with the RMP_DN bit.

5.8.3 SOFT RAMP-DOWN BEFORE FILTER MODE CHANGE (RMP_DN)

Function:

When set to 1 (default), a mute will be performed prior to executing a filter mode change. This mute is

effected, similar to attenuation changes, by the Soft and Zero Cross bits in the Volume and Mixing Control

register.

When set to 0, an immediate mute is performed prior to executing a filter mode change.

Note: For best results, it is recommended that this feature be used in conjunction with the RMP_UP bit.

5.8.4 PCM AUTO-MUTE (PAMUTE)

Function:

When set to 1 (default) the Digital-to-Analog converter output will mute following the reception of 8192

consecutive audio samples of static 0 or -1. A single sample of non-static data will release the mute. De-

tection and muting is done independently for each channel. The quiescent voltage on the output will be

retained and the Mute Control pin will go active during the mute period.

When set to 0 this function is disabled.

5.8.5 DSD AUTO-MUTE (DAMUTE)

Function:

When set to 1 (default) the Digital-to-Analog converter output will mute following the reception of 256 re-

peated 8-bit DSD mute patterns (as defined in the SACD specification).

A single bit not fitting the repeated mute pattern (mentioned above) will release the mute. Detection and

muting is done independently for each channel. The quiescent voltage on the output will be retained and

the Mute Control pin will go active during the mute period.

44

DS671A1

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