CRD4525-Q1 Cirrus Logic Inc, CRD4525-Q1 Datasheet - Page 70

• Manufacturer Part Number: CRD4525-Q1
• Description: REFERENCE BOARD FOR CS4525 PWM
• Manufacturer: Cirrus Logic Inc
• Series: Popguard®r

Specifications of CRD4525-Q1

• Amplifier Type: Class D
• Output Type: 2-Channel (Stereo)
• Max Output Power X Channels @ Load: 15W x 2 @ 8 Ohm
• Voltage - Supply: 12 V ~ 18 V
• Operating Temperature: 0°C ~ 70°C
• Board Type: Fully Populated
• Utilized Ic / Part: CS4525
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 598-1586

70
9.1.4
9.1.5
9.1.6
9.1.7
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.
HP_Detect/Mute Pin Mode (HP/Mute)
Default = 0
Function:
Configures the function of HP_DETECT/MUTE input pin. See
Input” on page 51
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.
AM Frequency Shifting (FreqShift)
Default = 0
Function:
Controls the state of the PWM AM frequency shift feature. See
for more information.
HP/MutePol Setting
HP/Mute Setting
PhaseShift Setting
FreqShift Setting
0 .......................................... Active low.
1 .......................................... Active high.
0 .......................................... Mute input signal.
1 .......................................... Headphone detect input signal.
0 .......................................... 180º phase shift disabled.
1 .......................................... 180º phase shift enabled.
0 .......................................... Frequency shift disabled.
1 .......................................... Frequency shift enabled.
for more information.
Headphone Detect/Mute Input Polarity
HP_DETECT/MUTE Pin Function
Modulator Phase Shift State
AM Frequency Shift State
“Headphone Detection & Hardware Mute
“PWM AM Frequency Shift” on page 51
CS4525
DS726PP3