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STA321 Scheda tecnica(PDF) 63 Page - STMicroelectronics |
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STA321 Scheda tecnica(HTML) 63 Page - STMicroelectronics |
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63 / 157 page ![]() STA321 Fault detection and recovery Doc ID 15351 Rev 3 63/157 9 Fault detection and recovery 9.1 External amplifier When Fault is reported on pin EAFTN and bit EA_TSFT_ON of register FFXCFG2 on page 83 is active, then pin EATSN is reset to 0 and the embedded bridge outputs are put in the high-impedance state. When the fault signal disappears (that is, goes to 1) the embedded bridge is kept in 3-state for a time defined in register EATTF0-1 on page 86, after which time the outputs recover. 9.2 CMOS bridge When Fault is reported to the digital core and CB_TSFT_ON of register FFXCFG2 on page 83 is active then the tristate is activated thus putting the STA321 OUTn outputs in the high-impedance state. When the fault signal disappears, the CMOS bridge is kept in 3-state status for a time defined in register CBTTF0-1 on page 88, after which time the outputs recover. |
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