cs47028-dqz Cirrus Logic, Inc., cs47028-dqz Datasheet - Page 15

• Manufacturer Part Number: cs47028-dqz
• Description: System-on- A-chip Asoc Processors
• Manufacturer: Cirrus Logic, Inc.

4.4.2 Termination Requirements
4.4.3 Pads
4.5 Application Code Security
DS787PP5
Open-drain pins on the CS470xx must be pulled high for proper operation. Please refer to the
Mode select pins on CS470xx are used to select the boot mode upon the rising edge from reset. A
The CS470xx Digital I/Os operate from the 3.3 V supply and are 5 V tolerant.
The external program code may be encrypted by the programmer to protect any intellectual
CS470xx Hardware User’s Manual to identify which pins are open-drain and what value of pull-up
resistor is required for proper operation.
detailed explanation of termination requirements for each communication mode select pin can be
found in the CS470xx Hardware User’s Manual.
property it may contain. A secret, customer-specific key is used to encrypt the program code that is
to be stored external to the device. Please contact your local Cirrus representative for details.
Copyright 2011 Cirrus Logic
Audio SOC Processor Family
CS470xx Data Sheet
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