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參數資料
| 型號： | NCT7491RQR2G |
| 廠商： | ON Semiconductor |
| 文件頁數： | 25/80頁 |
| 文件大?。?/td> | 844K |
| 描述： | IC REMOTE THERMAL MONITOR 24QSOP |
| 標準包裝： | 2,500 |
| 系列： | * |
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NCT7491
http://onsemi.com
25
" PWM values are programmed in the range 0x00 to
0xFF. The resolution for this register is 1 lsb = 0.392%.
The NCT7491 linearly interpolates between the
programmed points. It is not necessary to program all 8
points. If fewer than 8 points are required then the user
should program from the lowest to the highest required
control temperature and set the unused control temperatures
to the maximum value (0x00 if relative PECI is assigned,
0xFF if the PWM channel is controlled by any other
temperature source).
" Setting bit <0> of register 0x10 to 1 puts PWM1 in
Lookup Table mode
" Setting bit <1> of register 0x10 to 1 puts PWM2 in
Lookup Table mode
" Setting bit <2> of register 0x10 to 1 puts PWM3 in
Lookup Table mode
The registers used for setting the control temperatures and
PWMs for each channel are on page 2 of the register map.
To access these registers the user must first set bit 0 of
register 0xFF to 1. This will set the register page to page 2.
When programming the table is complete the user should
clear bit 0 of register 0xFF to zero to return to page 1 of the
register map.
Table 26. PWM1 LOOKUP TABLE VALUES
PWM1 Control Points
Temperature Address
PWM Address
PWM1 Control Point 1
0x00 (0x100)
0x01 (0x101)
PWM1 Control Point 2
0x02 (0x102)
0x03 (0x103)
PWM1 Control Point 3
0x04 (0x104)
0x05 (0x105)
PWM1 Control Point 4
0x06 (0x106)
0x07 (0x107)
PWM1 Control Point 5
0x08 (0x108)
0x09 (0x109)
PWM1 Control Point 6
0x0A (0x10A)
0x0B (0x10B)
PWM1 Control Point 7
0x0C (0x10C)
0x0D (0x10D)
PWM1 Control Point 8
0x0E (0x10E)
0x0F (0x10F)
Table 27. PWM2 LOOKUP TABLE VALUES
PWM2 Control Points
Temperature Address
PWM Address
PWM2 Control Point 1
0x10 (0x110)
0x11 (0x111)
PWM2 Control Point 2
0x12 (0x112)
0x13 (0x113)
PWM2 Control Point 3
0x14 (0x114)
0x15 (0x115)
PWM2 Control Point 4
0x16 (0x116)
0x17 (0x117)
PWM2 Control Point 5
0x18 (0x118)
0x19 (0x119)
PWM2 Control Point 6
0x1A (0x11A)
0x1B (0x11B)
PWM2 Control Point 7
0x1C (0x11C)
0x1D (0x11D)
PWM2 Control Point 8
0x1E (0x11E)
0x1F (0x11F)
Table 28. PWM3 LOOKUP TABLE VALUES
PWM3 Control Points
Temperature Address
PWM Address
PWM3 Control Point 1
0x20 (0x120)
0x21 (0x121)
PWM3 Control Point 2
0x22 (0x122)
0x23 (0x123)
PWM3 Control Point 3
0x24 (0x124)
0x25 (0x125)
PWM3 Control Point 4
0x26 (0x126)
0x27 (0x127)
PWM3 Control Point 5
0x28 (0x128)
0x29 (0x129)
PWM3 Control Point 6
0x2A (0x12A)
0x2B (0x12B)
PWM3 Control Point 7
0x2C (0x12C)
0x2D (0x12D)
PWM3 Control Point 8
0x2E (0x12E)
0x2F (0x12F)
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