ADT7476ARQZ-R7 datasheet(56/67 Pages) ONSEMI

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ADT7476

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Table 31.

TRANGE/PWM Frequency Registers

R/W (Note 1)

Description

Power−On Default

0x5F

R/W

Remote 1 TRANGE/PWM1 frequency.

0xC4

0x60

R/W

Local TRANGE/PWM2 frequency.

0xC4

0x61

R/W

Remote 2 TRANGE/PWM3 frequency.

0xC4

Bit No.

Name

R/W

Description

[2:0]

FREQ

R/W

These bits control the PWMx frequency (only apply when PWM channel is in low frequency

mode).

000 = 11.0 Hz

001 = 14.7 Hz

010 = 22.1 Hz

011 = 29.4 Hz

100 = 35.3 Hz (default)

101 = 44.1 Hz

110 = 58.8 Hz

111 = 88.2 Hz

[3]

HF/LR

R/W

HF/LF = 1, High frequency PWM mode is enabled for PWMx.

HF/LF = 0, Low frequency PWM mode is enabled for PWMx.

[7:4]

RANGE

R/W

These bits determine the PWM duty cycle vs. the temperature range for automatic fan

control.

0000 = 2°C

0001 = 2.5°C

0010 = 3.33°C

0011 = 4°C

0100 = 5°C

0101 = 6.67°C

0110 = 8°C

0111 = 10°C

1000 = 13.33°C

1001 = 16°C

1010 = 20°C

1011 = 26.67°C

1100 = 32°C (default)

1101 = 40°C

1110 = 53.33°C

1111 = 80°C

1. These registers become read−only when the Configuration Register 1 lock bit is set. Any further attempts to write to these registers have

no effect.

ADT7476ARQZ-R7 Datasheet(PDF) 56 Page - ON Semiconductor

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