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STAC9704 Datasheet(PDF) 33 Page - Hynix Semiconductor

Part # STAC9704
Description  Multimedia Audio Codec for AC97
PDF  49 Pages
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Manufacturer  HYNIX [Hynix Semiconductor]
Direct Link  http://www.skhynix.com/kor/main.do
Logo HYNIX - Hynix Semiconductor

STAC9704 Datasheet(HTML) 33 Page - Hynix Semiconductor

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SigmaTel, Inc.
STAC9704/7
33
10/02/98
6. TESTABILITY
The STAC9704/7 has two test modes. One is for ATE in-circuit test and the other is restricted for SigmaTel’s
internal use.
STAC9704/7 enters the ATE in circuit test mode if SDATA_OUT is sampled high at the trailing
edge of RESET#.
Once in the ATE test mode, the digital AC-link outputs (BIT_CLK and SDATA_IN) are
driven to a high impedance state. This allows ATE in-circuit testing of the AC’97 controller. This case will
never occur during standard operating conditions. Once either of the two test modes have been entered, the
STAC9704/7 must be issued another rest with all AC-link signals held low to return to the normal operating
mode.



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