TLV320AIC15| Datasheet

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TLV320AIC12, TLV320AIC13 TLV320AIC14, TLV320AIC15, TLV320AIC20 TLV320AIC21, TLV320AIC24, TLV320AIC25
OCTOBER 2003

PRODUCT NOTIFICATION
DEVICE TLV320AIC12 TLV320AIC13 TLV320AIC14 TLV320AIC15 TLV320AIC20 TLV320AIC21 TLV320AIC24 TLV320AIC25 LITERATURE NO. SLWS115 SLWS139 SLWS140 SLWS141 SLAS363 SLAS365 SLAS366 SLAS367

Texas Instruments (TI) has recently identified a problem in the product models listed above related to DLL clock-generation. When a clock-generation mode is used that powers up the delay-locked-loop (DLL), the DLL may not startup properly when initiated, resulting in the audio master clock not functioning. This results in the codec in the products not functioning. This issue does not affect applications that do not enable the product's DLL. Since this issue does not affect operation if the DLL is not enabled, customers are recommended to ensure their system does not enable the product's DLL. The DLL is enabled anytime the P value in control register #4 (pertaining to clock generation) is NOT set equal to 8. The DLL is used whenever the part is in fine sampling mode, as described in Section 3.1 of the data manual, so the recommended mode to use is the coarse sampling mode, which requires P=8. At present, TI does not have a screening procedure in place to detect product with the DLL issue, but the company also
realizes that many customers do not use the DLL in their systems and will be unaffected by this issue. TI is not confident of the operation of the DLL in this product at this time. To ensure customers have been made aware of this issue, orders for these parts will only be filled upon return of a signed waiver until this issue is resolved. The company has initiated an investigation to fully understand the root cause of this problem and determine what appropriate long-term corrective action should be taken. TI recommends that all customers presently using these parts contact the company immediately, so they can receive updates on this investigation and plans for its resolution. We apologize for the inconvenience placed upon customers in ordering this product. However, we wish to ensure that our customers are aware of the device shortcomings from the specification. We are working in earnest to remove this waiver requirement. For further information, please contact Neeraj Magotra WW Strategic Marketing Manager
for Voice/Audio Systems Office: (214) 480-7486 nmagotra@ti.com