Datasheet

LM63
www.ti.com SNAS190E –SEPTEMBER 2002–REVISED MAY 2013
Table 5. Fan Control Registers (continued)
ADDRESS READ/ POR
BITS NAME DESCRIPTION
HEX WRITE VALUE
50
HEX
to 5F
HEX
LOOKUP TABLE (7 Bits for Temperature and 6 Bits for PWM for each Temperature/PWM Pair)
7 0 This bit is unused and always set to 0.
Lookup Table
50 Temperature
If the remote diode temperature exceeds this value, the PWM output will
6:0 0x7F
Entry 1
be the value in Register 51.
7:6 00 These bits are unused and always set to 0.
Lookup Table
51
PWM Entry 1
5:0 0x3F The PWM value corresponding to the temperature limit in register 50.
7 0 This bit is unused and always set to 0.
Lookup Table
52 Temperature
If the remote diode temperature exceeds this value, the PWM output will
6:0 0x7F
Entry 2
be the value in Register 53.
7:6 00 These bits are unused and always set to 0.
Lookup Table
53
PWM Entry 2
5:0 0x3F The PWM value corresponding to the temperature limit in register 52.
7 0 This bit is unused and always set to 0.
Lookup Table
54 Temperature
If the remote diode temperature exceeds this value, the PWM output will
6:0 0x7F
Entry 3
be the value in Register 55.
7:6 00 These bits are unused and always set to 0.
Lookup Table
55
PWM Entry 3
5:0 0x3F The PWM value corresponding to the temperature limit in register 54.
7 0 This bit is unused and always set to 0.
Lookup Table
56 Temperature
If the remote diode temperature exceeds this value, the PWM output will
6:0 0x7F
Entry 4
be the value in Register 57.
7:6 00 These bits are unused and always set to 0.
Lookup Table
Read.
57
PWM Entry 4
5:0 0x3F The PWM value corresponding to the temperature limit in register 56.
(Write only
if reg 4A
7 0 This bit is unused and always set to 0.
Lookup Table
bit 5 = 1.)
58 Temperature
If the remote diode temperature exceeds this value, the PWM output will
6:0 0x7F
Entry 5
be the value in Register 59.
7:6 00 These bits are unused and always set to 0.
Lookup Table
59
PWM Entry 5
5:0 0x3F The PWM value corresponding to the temperature limit in register 58.
7 0 This bit is unused and always set to 0.
Lookup Table
5A Temperature
If the remote diode temperature exceeds this value, the PWM output will
6:0 0x7F
Entry 6
be the value in Register 5B.
7:6 00 These bits are unused and always set to 0.
Lookup Table
5B
PWM Entry 6
5:0 0x3F The PWM value corresponding to the temperature limit in register 5A.
7 0 This bit is unused and always set to 0.
Lookup Table
5C Temperature
If the remote diode temperature exceeds this value, the PWM output will
6:0 0x7F
Entry 7
be the value in Register 5D.
7:6 00 These bits are unused and always set to 0.
Lookup Table
5D
PWM Entry 7
5:0 0x3F The PWM value corresponding to the temperature limit in register 5C.
7 0 This bit is unused and always set to 0.
Lookup Table
5E Temperature
If the remote diode temperature exceeds this value, the PWM output will
6:0 0x7F
Entry 8
be the value in Register 5F.
7:6 00 These bits are unused and always set to 0.
Lookup Table
5F
PWM Entry 8
5:0 0x3F The PWM value corresponding to the temperature limit in register 5E.
4F
HEX
LOOKUP TABLE HYSTERESIS
7:5 000 Lookup These bits are unused and always set to 0
4F R/W Table
4:0 00100 The amount of hysteresis applied to the Lookup Table. (1 LSB = 1°C).
Hysteresis
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