CS4360 datasheet(18/36 Pages) CIRRUS

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CS4360

DS517PP1

4.5.2

CONTROL PORT ENABLE (CPEN)

Default = 0

0 - Disabled

1 - Enabled

Function:

The Control Port will become active and reset to the default settings when this function is enabled.

4.5.3

POWER DOWN (PDN)

Default = 1

0 - Disabled

1 - Enabled

Function:

The entire device will enter a low-power state when this function is enabled, and the contents of the

control registers are retained in this mode. The power-down bit defaults to ‘enabled’ on power-up and

must be disabled before normal operation in Control Port mode can occur.

4.5.4

POPGUARD® TRANSIENT CONTROL (POPG)

Default = 1

0 - Disabled

1 - Enabled

Function:

The PopGuard® Transient Control allows the quiescent voltage to slowly ramp to and from 0 volts to

the quiescent voltage during power-on or power-off when this function is enabled. Please see section

6.4 for implementation details.

4.5.5

FREEZE CONTROLS (FREEZE)

Default = 0

0 - Disabled

1 - Enabled

Function:

This function allows modifications to be made to the registers without the changes taking effect until

the FREEZE is disabled. To make multiple changes in the control port registers take effect simulta-

neously, enable the FREEZE bit, make all register changes, then disable the FREEZE bit.

4.5.6

MASTER CLOCK DIVIDE ENABLE (MCLKDIV)

Default = 0

0 - Disabled

1 - Enabled

Function:

The MCLKDIV bit enables a circuit which divides the externally applied MCLK signal by 2 prior to all

other internal circuitry.

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