AMC6821 datasheet(47/57 Pages) TI2

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AMC6821

SBAS386C – MAY 2006 – REVISED JULY 2007

Remote-Low-Temp-Limit Register (Address 0x19, Value After Power-On or Reset = 0x00, 0

°C)

Bit 7 (MSB)

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0 (LSB)

RT-L10 (MSB)

RT-L9

RT-L8

RT-L7

RT-L6

RT-L5

RT-L4

RT-L3

These bits are the lower bounds of the remote temperature.

Remote-THERM-Limit Register (Address 0x1A, Value After Power-On or Reset = 0x64, +100

°C)

Bit 7 (MSB)

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0 (LSB)

RT-T10 (MSB)

RT-T9

RT-T8

RT-T7

RT-T6

RT-T5

RT-T4

RT-T3

These bits are the thermal threshold of the remote temperature.

Local-Critical-Temp Register (Address 0x1B, Value After Power-On or Reset = 0x50, +80

°C)

Bit 7 (MSB)

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0 (LSB)

LT-C10

LT-C9

LT-C8

LT-C7

LT-C6

LT-C5

LT-C4

LT-C3

These bits are the critical threshold of the local temperature.

PSV-Temp Register (Address 0x1C, Value After Power-On or Reset = 0x00, 0

°C)

Bit 7 (MSB)

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0 (LSB)

PSV8

PSV7

PSV6

PSV5

PSV4

PSV3

Bits [PSV10:PSV0] are the passive cooling temperature threshold. Bits PSV10, PSV9, and [PSV2:PSV0] are

always '0'. The PSV ranges from 0

°C to +64°C.

In the auto fan temperature loop, the fan stops and the duty cycle is forced to 0% when the active temperature is

equal to or below the PSV temperature.

Remote-Critical-Temp Register (Address 0x1D, Value After Power-On or Reset = 0x69, +105

°C)

Bit 7 (MSB)

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0 (LSB)

RT-C10

RT-C9

RT-C8

RT-C7

RT-C6

RT-C5

RT-C4

RT-C3

Bits [RT-C10:RT-C0] are the critical threshold of the remote temperature.

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