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EMC2113 データシート(PDF) 55 Page - Microchip Technology |
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EMC2113 データシート(HTML) 55 Page - Microchip Technology |
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55 / 88 page  RPM-Based Fan Controller with Multiple Temperature Zones & Hardware Thermal Shutdown Datasheet 2013 Microchip Technology Inc. DS20005251A-page 55 Bit 7 - PWM_INT_EN - Allows the PWM input to assert the ALERT pin. ‘0’ (default) - The ALERT pin will not be asserted if the PWM input duty cycle meets or exceeds its high limit. ‘1’ - The ALERT pin will be asserted if the PWM input duty cycle meets or exceeds its high limit. Bit 3 - EXT3_INT_EN - Allows the External Diode 3 to assert the ALERT pin. ‘0’ (default) - The ALERT pin will not be asserted for any error condition associated with External Diode 3 channel. ‘1’ - The ALERT pin will be asserted for an error condition associated with External Diode 3 channel. Bit 2 - EXT2_INT_EN - Allows the External Diode 2 to assert the ALERT pin. ‘0’ (default) - The ALERT pin will not be asserted for any error condition associated with External Diode 2 channel. ‘1’ - The ALERT pin will be asserted for an error condition associated with External Diode 2 channel. Bit 1 - EXT1_INT_EN - Allows the External Diode 1 to assert the ALERT pin. ‘0’ (default) - The ALERT pin will not be asserted for any error condition associated with External Diode 1 channel. ‘1’ - The ALERT pin will be asserted for an error condition associated with External Diode 1 channel. Bit 0 - INT_INT_EN - Allows the Internal Diode to assert the ALERT pin. ‘0’ (default) - The ALERT pin will not be asserted for any error condition associated with the Internal Diode. ‘1’ - The ALERT pin will be asserted for an error condition associated with the Internal Diode. 7.17 Fan Interrupt Enable Register The Fan Interrupt Enable Register controls the masking for errors generated by the Fan Driver. When a channel is masked, it will not cause the ALERT pin to be asserted when an error condition is detected. Bit 1 - SPIN_INT_EN - Allows the FAN_SPIN bit to assert the ALERT pin. ‘0’ (default) - the FAN_SPIN bit will not assert the ALERT pin though it will still update the Status Register normally. ‘1’ - the FAN_SPIN bit will assert the ALERT pin. Bit 0 - STALL_INT_EN - Allows the FAN_STALL bit or DRIVE_FAIL bit to assert the ALERT pin. ‘0’ (default) - the FAN_STALL bit or DRIVE_FAIL bit will not assert the ALERT pin though will still update the Status Register normally. ‘1’ - the FAN_STALL bit will assert the ALERT pin. Table 7.24 Fan Interrupt Enable Register ADDR R/W REGISTER B7 B6 B5 B4 B3 B2 B1 B0 DEFAULT 29h R/W Fan Interrupt Enable -- - - - - SPIN_ INT_EN STALL_ INT_EN 00h |
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