Errata: CS4270 Rev C0 Silicon Reference CS4270 Data Sheet DS686PP1 Measured DAC THD+N (0 dB) with VA = 5 V or 3.3 V (nominal voltage) could be -81 dB and does not meet the -83 dB maximum specification in the Data Sheet. Measured DAC THD+N (0 dB) with VA = 3.0 V (3.3 V min.) is -79 dB and does not meet the -83 dB maximum specification in the Data Sheet. The digital portions of the part (both ADC and DAC) will not function when MCLK divide by 1.5 is selected and VD = 3.3 V. The following start-up sequences will correct the problem. In Control Port Mode: - - - - - - Power-up the part Hold MCLK Static Hard reset the part Set PDN Set the Ratio Select bits in Reg. 03h Release PDN In Stand-Alone Mode: - - - - Power-up the part Hold the part in reset Set the MDIV1,2 pin logic levels Release reset Contacting Cirrus Logic Support For all product questions and inquiries, contact a Cirrus Logic Sales Representative. To find the one nearest you, go to http://www.cirrus.com http://www.cirrus.com Copyright (c) Cirrus Logic, Inc. 2006 (All Rights Reserved) AUGUST '06 ER686B2