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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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EMC2103 датащи(PDF) 53 Page - Microchip Technology |
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EMC2103 датащи(HTML) 53 Page - Microchip Technology |
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53 / 85 page  RPM-Based Fan Controller with Hardware Thermal Shutdown Datasheet 2013 Microchip Technology Inc. DS0005250A-page 53 6.13 Error Status Registers The Error Status Registers report the specific error condition for all measurement channels with limits. If any bit is set in the High, Low, or Diode Fault Status register, the corresponding High, Low, or Fault bit is set in the Interrupt Status Register. Reading the Interrupt Status Register does not clear the Error Status bit. Reading from any Error Status Register that has bits set will clear the register and the corresponding bit in the Interrupt Status Register if the error condition has been removed. If the error condition is persistent, reading the Error Status Registers will have no affect. 6.13.1 Tcrit Status Register The Tcrit Status Register stores the event that caused the SYS_SHDN pin to be asserted. Each of the temperature channels must be associated with the SYS_SHDN pin before they can be set (see Section 6.9). Once the SYS_SHDN pin is asserted, it will be released when the temperature drops below the threshold level however the individual status bit will not be cleared until read. 6.14 Fan Status Register The Fan Status Register contains the status bits associated with each fan driver. Bit 7 - WATCH - This bit is asserted ‘1’ if the host has not programmed the fan driver within four (4) seconds after power up (i.e. the Watchdog Timer has timed out. See Section 5.9. Bit 5 - DRIVE_FAIL - Indicates that the RPM based Fan Speed Control Algorithm cannot drive the Fan to the desired target setting at maximum drive. This bit can be masked from asserting the ALERT pin. ‘0’ - The RPM based Fan Speed Control Algorithm can drive Fan to the desired target setting. ‘1’ - The RPM based Fan Speed Control Algorithm cannot drive Fan to the desired target setting at maximum drive. Table 6.20 Error Status Register ADDR R/W REGISTER B7 B6 B5 B4 B3 B2 B1 B0 DEFAULT 1Fh R-C Tcrit Status HWS EXT3 _TCR IT EXT2 _TCR IT EXT1 _TCR IT INT_T CRIT 00h 24h R-C High Status - - - - EXT3 _HI EXT2 _HI EXT1 _HI INT_ HI 00h 25h R-C Low Status - - -- - EXT3 _LO EXT2 _LO EXT1 _LO INT_L O 00h 26h R-C Diode Fault - - - - EXT3 _FLT EXT2 _FLT EXT1 _FLT - 00h Table 6.21 Fan Status Register ADDR R/W REGISTER B7 B6 B5 B4 B3 B2 B1 B0 DEFAULT 27h R-C Fan Status Register WATCH - DRIVE _FAIL -- - FAN_ SPIN FAN_ STALL 00h |
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