CS4525-CNZR Cirrus Logic Inc, CS4525-CNZR Datasheet - Page 89

• Manufacturer Part Number: CS4525-CNZR
• Description: IC PWM Controller+power Stage
• Manufacturer: Cirrus Logic Inc
• Series: Popguard®r
• Type: Class Dr

Specifications of CS4525-CNZR

• Output Type: 2-Channel (Stereo) or 4-Channel (Quad)
• Max Output Power X Channels @ Load: 30W x 1 @ 4 Ohm; 15W x 2 @ 8 Ohm
• Voltage - Supply: 8 V ~ 18 V
• Features: ADC, Depop, I²C, I²S, Mute, PWM, Short-Circuit and Thermal Protection, Volume Control
• Mounting Type: Surface Mount
• Package / Case: 48-QFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 598-1586 - REFERENCE BOARD FOR CS4525 PWM
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

DS726PP3
9.19.5 Power Down PWM Power Output X (PDnOutX)
9.19.6 Power Down (PDnAll)
9.20
Bits [7:4] in this register are read only. A ‘1’b in these bit positions indicates that the associated condition has oc-
curred at least once since the register was last read. A ‘0’b indicates that the associated condition has not occurred
since the last reading of the register. Reading the register resets bits to [7:4] ‘0’b. These bits are considered “edge-
triggered” events. The operation of these 4 bits is not affected by the interrupt mask bits and the condition of each
bit can be polled instead of generating an interrupt as required.
SRCLock
7
Interrupt (Address 60h)
Default = 1
Function:
When set, the specific PWM power output will enter a power-down state. Only the output power stage is
powered down. The PWM modulator is not affected, nor is the setup or delay register values. When set
to normal operation, the specific output will power up according to the state of the RmpSpd[1:0] bits and
the channel output configuration selected. When transitioning from normal operation to power down, the
specific output will power down according to the state of the RmpSpd[1:0] bits and the channel output con-
figuration selected.
The entire divide will enter a low-power state when this function is enabled:
Default = 1
Function:
The CS4525 will enter a power-down state when this function is enabled:
1. The power PWM outputs will be held in a high-impedance state.
2. The logic-level PWM outputs will continuously drive a logic ‘0’ if the HiZPSig bit is set and will be held
3. AUX_SDOUT, the auxiliary serial data output, will be driven to a digital-low. AUX_LRCK and
4. DLY_SDOUT, the delay serial data output, will output the unprocessed audio data from SDATA if
The contents of the control registers are retained in this state. Once the PDnAll bit is disabled, the pow-
ered and logic-level PWM outputs will first perform a click-free start-up function and then resume normal
operation.
The PDnAll bit defaults to ‘enabled’ on power-up and must be disabled before normal operation can occur.
PDnChX Setting
PDnAll Setting
0 ..........................................Normal power output X operation.
1 ..........................................Power output X power-down enabled.
0 ..........................................Normal device operation.
1 ..........................................Device power-down enabled.
in a high-impedance state if the HiZPSig bit is clear.
AUX_SCLK, the auxiliary serial output’s clocks, will continue to operate if the EnAuxPort bit is set,
ADC/SP is cleared, and the serial audio input receives a valid SCLK and LRCK; otherwise they will
also be driven to a digital-low voltage.
EnAuxPort is set, DlyPortCfg[1:0] is configured for serial output delay interface, ADC/SP is cleared,
and the serial audio input port receives a valid SCLK, LRCK, and SDATA. Otherwise, it will drive a
low voltage.
ADCOvfl
6
Power Output X Power-Down State
Device Power-Down State
ChOvfl
5
AmpErr
4
SRCStateM
3
ADCOvflM
2
ChOvflM
1
CS4525
AmpErrM
0
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