CS4364 datasheet(40/50 Pages) CIRRUS

40 / 50 page

DS619A1

CS4364

Function:

Auto mute polarity detect (00)

See Section 3.11 on page 28 for the description.

Active low mute polarity (10)

When RST is low the outputs are high impedance and will need to be biased active. Once reset has been

released and after this bit is set, the MUTEC output pins will be active low polarity.

Active high mute polarity (11)

At reset time the outputs are high impedance and will need to be biased active. Once reset has been re-

leased and after this bit is set, the MUTEC output pins will be active high polarity.

5.9

Mute Control (address 09h)

5.9.1

Mute (MUTE_xx)

Default = 0

0 - Disabled

1 - Enabled

Function:

The Digital-to-Analog converter output will mute when enabled. The quiescent voltage on the output will

be retained. The muting function is affected, similarly to attenuation changes, by the Soft and Zero Cross

bits. The MUTE pins will go active during the mute period according to the MUTEC bits.

5.10

Mixing Control (address 0Ah, 0Dh, 10h, 13h)

5.10.1

De-Emphasis Control (PX_DEM1:0)

Default = 00

00 - Disabled

01 - 44.1 kHz

10 - 48 kHz

11 - 32 kHz

Function:

Selects the appropriate digital filter to maintain the standard 15

µs/50 µs digital de-emphasis filter re-

sponse at 32, 44.1 or 48 kHz sample rates. (Figure 18 on page 25)

De-emphasis is only available in Single-Speed Mode.

543

Reserved

MUTE_B3

MUTE_A3

MUTE_B2

MUTE_A2

MUTE_B1

MUTE_A1

000

543

Reserved

Px_DEM1

Px_DEM0

PxATAPI4

PxATAPI3

PxATAPI2

PxATAPI1

PxATAPI0

001

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