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SGS Thomson Microelectronics
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Part No. |
AN539
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OCR Text |
...word. the echo canceller can be frozen in data mode by reading _ec_sta and performing a logical or with the value $0002 before writing to _ec_sta (i.e. other bits must not be changed). pwrest (r) residual echo power estimator for determinin... |
Description |
ST75C502-RAM MAPPING
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File Size |
71.58K /
10 Page |
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it Online |
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SGS Thomson Microelectronics
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Part No. |
AN920
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OCR Text |
...nominal frequencies, no twist - frozen gain - new 852hz filter - new thresholds. . . . . . 3 6.3 nominal frequencies, no twist - analog gain time constant low . . . . . . . . . . . . . . . . . . 3 7 measurements with revision 1.4 - nominal ... |
Description |
ST75C520 - A COMPLETE DTMF DETECTION CHECKING FROM REVISION 1.2 TO REVISION 1.4
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File Size |
79.64K /
11 Page |
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it Online |
Download Datasheet
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