70
DS726PP2
CS4525
9.1.4
HP_Detect/Mute Pin Active Logic Level (HP/MutePol)
Default = 0
Function:
This bit determines the active logic level for the HP_DETECT/MUTE input signal.
9.1.5
HP_Detect/Mute Pin Mode (HP/Mute)
Default = 0
Function:
Configures the function of HP_DETECT/MUTE input pin. See
“Headphone Detection & Hardware Mute
for more information.
9.1.6
Modulator Phase Shifting (PhaseShift)
Default = 0
Function:
When enabled, forces the output of the PWM modulator to output differential signals which are the inverse
of each other and have been phase shifted by 180 degrees. This causes, for instance, the differential sig-
nal pair to be exactly in phase with one another during a mute condition, thereby reducing the amount of
switching current through the load.
9.1.7
AM Frequency Shifting (FreqShift)
Default = 0
Function:
Controls the state of the PWM AM frequency shift feature. See
“PWM AM Frequency Shift” on page 51
for more information.
HP/MutePol Setting
Headphone Detect/Mute Input Polarity
0 .......................................... Active low.
1 .......................................... Active high.
HP/Mute Setting
HP_DETECT/MUTE Pin Function
0 .......................................... Mute input signal.
1 .......................................... Headphone detect input signal.
PhaseShift Setting
Modulator Phase Shift State
0 .......................................... 180º phase shift disabled.
1 .......................................... 180º phase shift enabled.
FreqShift Setting
AM Frequency Shift State
0 .......................................... Frequency shift disabled.
1 .......................................... Frequency shift enabled.
