EMC2103 datasheet(62/85 Pages) MICROCHIP

tên linh kiện	EMC2103

Giải thích chi tiết về linh kiện	RPM-Based Fan Controller with Hardware Thermal Shutdown

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RPM-Based Fan Controller with Hardware Thermal Shutdown

Datasheet

DS0005250A-page 62

 2013 Microchip Technology Inc.



‘1’ - The Spin Up Routine will not drive the PWM to 100%. It will set the drive at the programmed

spin level for the entire duration of the programmed spin up time.

Bits 4 - 2 - SPIN_LVL[2:0] - Determines the final drive level that is used by the Spin Up Routine as

shown in Table 6.41.

Bit 1 -0 - SPINUP_TIME[1:0] - determines the maximum Spin Time that the Spin Up Routine will run

for (see Section 5.7). If a valid tachometer measurement is not detected before the Spin Time has

elapsed, then an interrupt will be generated. When the RPM based Fan Speed Control Algorithm is

active, the fan driver will attempt to re-start the fan immediately after the end of the last spin up attempt.

The Spin Time is set as shown in Table 6.42.

The Fan Spin Up Configuration Register is software locked.

Table 6.41 Spin Level

SPIN_LVL[2:0]

SPIN UP DRIVE LEVEL

30%

35%

40%

45%

50%

55%

60% (default)

65%

Table 6.42 Spin Time

SPINUP_TIME[1:0]

TOTAL SPIN UP TIME

250 ms

500 ms (default)

1 sec

2 sec

EMC2103 bảng dữ liệu(PDF) 62 Page - Microchip Technology