CRD-4525-Q1 Cirrus Logic Inc, CRD-4525-Q1 Datasheet
CRD-4525-Q1
Specifications of CRD-4525-Q1
Related parts for CRD-4525-Q1
CRD-4525-Q1 Summary of contents
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... CRD4525-Q1 easy. The software communicates through the PC’s USB port to configure the control port registers so that all features of the CS4525 can be evaluated. Additionally, control over ba- sic functions is possible via on-board hardware controls without the need to attach the CRD4525- PC. ORDERING INFORMATION CRD4525-Q1 CS4525 PCM ...
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... PERFORMANCE PLOTS ..................................................................................................................... 23 9. THERMAL DE-RATING ........................................................................................................................ 29 10. ELECTROMAGNETIC COMPLIANCE (EMC) PERFORMANCE ...................................................... 30 10.1 EMI Testing Procedures .............................................................................................................. 30 10.2 System Configuration ................................................................................................................... 31 10.3 CRD4525-Q1 Test Results .......................................................................................................... 31 11. REVISION HISTORY .......................................................................................................................... 32 LIST OF FIGURES Figure 1.Speaker Terminal Configuration ................................................................................................... 5 Figure 2.CS4525 Main Controls Tab ........................................................................................................... 7 Figure 3.CS4525 Aux & Filter Controls Tab ................................................................................................ 8 Figure 4 ...
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... Figure 19.Inter-Modulation Distortion of 19 kHz + 20 kHz ........................................................................ 28 Figure 20.Thermal De-Rating Curve for a Typical CRD4525-Q1 .............................................................. 29 Figure 21.Test Facility Setup .................................................................................................................... 30 Figure 22.Vertical Peak Scan Data for the CRD4525-Q1 ......................................................................... 31 Figure 23.Horizontal Peak Scan Data for the CRD4525-Q1 ..................................................................... 31 LIST OF TABLES Table 1. System Connections ................................................................................................................... 14 Table 2. On-Board Tactile Controls ........................................................................................................... 14 Table 3 ...
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... SYSTEM OVERVIEW The CRD4525-Q1 reference design is an excellent means for evaluating the CS4525 30 W digital amplifier with in- tegrated ADC. Analog and digital audio input signal interfaces are provided; an on-board microcontroller and USB PC interface is used for easily configuring the CS4525’s internal registers, and stand-alone mode is supported through on-board tactile controls ...
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... Analog Inputs RCA connectors supply the CS4525 analog inputs through single-ended passive circuits with one pole of input filtering. A resistive attenuation network is implemented to allow 2 V the CRD4525-Q1. Refer to the CS4525 data sheet for the maximum input signal level at the analog input pins. 1.7 Speaker Outputs The CS4525 power outputs are configured for stereo full-bridge operation ...
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... CRD4525-Q1 upon start-up. 1.10 External Power Stage Interface A keyed connector (J4) is included to interface with the CRD4412A. The CRD4525-Q1 can be used with or without a CRD4412A attached. Without the CRD4412A attached, the CRD4525-Q1 configures itself for 2-channel stereo full-bridge opera- tion ...
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... Connect an input source to the S/PDIF or analog input connectors. 5. Plug the input to the included +18 V power supply into an available power outlet. 6. Plug the output of the included +18 V power supply into the power input connector on the CRD4525-Q1. 7. Launch the FlexGUI software. The GUI will load and be displayed. ...
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... Bass Manager crossover frequency, and the bass/treble shelving filters available in the CS4525. This utility creates a script file which can be loaded into the CS4525 utilizing the FlexGUI interface. Please refer to Cirrus Logic application note AN303 for more information regarding this valuable tool. 8 Figure 3. CS4525 Aux & Filter Controls Tab CRD4525-Q1 DS804RD4 ...
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... S/PDIF Input Controls Tab When the CRD4525-Q1 is configured to make use of the CS8416 S/PDIF receiver, the devices must be configured for proper operation. The S/PDIF Input Controls tab provides a high-level, intuitive interface to the most common configuration options of the CS8416. DS804RD4 Figure 4. S/PDIF Input Controls Tab ...
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... Within the Register Maps tab, the CS4525 tab is used to access the CS4525’s internal registers, and the CS8416 tab is used to access the CS8416’s internal registers. 10 Figure 5. Register Maps Tab CRD4525-Q1 DS804RD4 ...
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... Using the pre-configured script file named “Analog In.fgs”, an analog input signal applied to the analog inputs of the CRD4525-Q1 will be used as the CS4525’s input source. The device will be powered up with no internal processing active and the master volume control set to -20 dB. ...
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... STAND-ALONE MODE CONTROL The CRD4525-Q1 is capable of operation without being connected to a computer by operating in stand-alone mode. When in this mode, the board is controlled by on-board hardware controls detailed in volume control on the edge of the board controls the volume. Tapping the mute button mutes/un-mutes the PWM outputs of the CS4525 ...
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... This allows the speaker outputs decou- pled to the chassis just before they exit the chassis from the speaker connector. • Make use of source termination resistors on all digital signals whose traces are longer than about 25 mm. DS804RD4 4.1, effective power supply decoupling of high-frequency currents and mini- CRD4525-Q1 13 ...
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... When shunts are placed across column 1 and 2, the CS4525 serial audio input data is sourced by the CS8416 To use external serial audio input data, connect the PCM source cable across column 2 and 3 Auxiliary serial audio data from the CS4525 Connection to CRD4412A daughter card Table 3. System Headers CRD4525-Q1 Connector Function Header Function ...
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... CRD SCHEMATICS Figure 6. CS4525 - Schematic Page 1 ...
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Figure 7. USB Microcontroller & Tactile Control - Schematic Page 2 ...
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Figure 8. Power & I/O Connections - Schematic Page 3 ...
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... CRD LAYOUT 2.9'' 4.5'' Figure 9. Component Map ...
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Figure 10. Top-Side Copper Layer ...
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Figure 11. Inner Copper Layer 1 ...
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Figure 12. Inner Copper Layer 2 ...
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Figure 13. Bottom-Side Copper Layer ...
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PERFORMANCE PLOTS Unless otherwise stated, all measurements taken utilizing digital optical input at 1 kHz. Both channels were driven into 8 Ω resistive loads, and an AES- kHz filter was enabled during testing. +3 +2.5 ...
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Channel 3/4 Channel 1/2 500m Figure 15. THD+N vs. Power ...
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W 0 0.1 0. 0.02 0.01 0.005 0.002 0.001 20 50 100 200 500 Figure 16. THD+N vs. Frequency 5k 10k 20k ...
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B - -80 -90 -100 -110 -120 -130 -140 20 50 100 Channel 1/2 Channel 3/4 200 500 Figure 17. FFT at -60 dB Input 5k 10k ...
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B - -80 -90 -100 Channel 3/4 -110 -120 -130 Channel 1/2 -140 20 50 100 200 500 Figure 18. FFT Input 5k 10k ...
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B - -80 -90 -100 Channel 3/4 -110 -120 -130 Channel 1/2 -140 20 50 100 Figure 19. Inter-Modulation Distortion of 19 kHz + 20 kHz 200 500 1k 2k ...
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... PCB acts as a heat sink for the CS4525, the maximum sustained output power of the CRD4525-Q1. The CS4525 will generate heat that will flow into the PCB and then out to the ambient air surrounding the CRD4525-Q1; the more output power the CS4525 is delivering, the more heat it will produce. This transfer of heat is less effective at greater ambient temperatures ...
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... For optimal EMI performance, all printed circuit boards (PCB’s) implementing the CS4525 device should be de- signed to match the PCB layout of the CRD4525-Q1 as closely as possible. In particular, the designer should take care to make the VP power input and PWM output filter section of the design, including component placement and trace routing, identical to that of the CRD4525-Q1 board ...
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... In this mode of operation, the 1 kHz test tone is supplied through an optical S/PDIF signal applied to J7. It should be noted that an open frame PCB, such as the CRD4525-Q1, represents the worst case scenario for EMC testing. Systems which include a shielded chassis and an earth ground will produce lower levels of EMI, given the same schematic and layout configuration as that of the CRD4525-Q1 ...
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... Cirrus Logic, Cirrus, and the Cirrus Logic logo designs are trademarks of Cirrus Logic, Inc. All other brand and product names in this document may be trademarks or service marks of their respective owners. Windows and Microsoft are registered trademarks of Microsoft Corporation. 32 Changes 30. www.cirrus.com. CRD4525-Q1 DS804RD4 ...