ADT7462ACPZ-R7 datasheet(67/81 Pages) ONSEMI

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ADT7462

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Table 51. Register 0x19 — Voltage Attenuator Configuration 2 (Note 1)

Bit

Name

R/W

Description

Attenuator Pin 23

R/W

Setting this bit to 0 removes the attenuators for Pin 23. Default = 1 = attenuators enabled.

Attenuator Pin 24

R/W

Setting this bit to 0 removes the attenuators for Pin 24. Default = 1 = attenuators enabled.

Attenuator Pin 25

R/W

Setting this bit to 0 removes the attenuators for Pin 25. Default = 1 = attenuators enabled.

Reserved

R/W

Reserved for future use. Default = 0.

Attenuator Pin 28

R/W

Setting this bit to 0 removes the attenuators for Pin 28. Default = 1 = attenuators enabled.

Attenuator Pin 29

R/W

Setting this bit to 0 removes the attenuators for Pin 29. Default = 1 = attenuators enabled.

[7:6]

Reserved

R/W

Reserved for future use. Default = 00.

1. POR = 0x37, Lock = Y, SW Reset = Y.

Table 52. Register 0x1A — Enhanced Acoustics Register 1

Bit

Mnemonic

R/W

Description

En1

R/W

Setting this bit to 1 enables the enhanced acoustics mode for PWM1; 0 disables it. Default = 0.

En2

R/W

Setting this bit to 1 enables the enhanced acoustics mode for PWM2; 0 disables it. Default = 0.

[4:2]

Ramp Rate 1

R/W

These bits set the ramp rate for the enhanced acoustics mode for PWM1. Default = 000.

Time Slot Increase

000 = 1

001 = 2

010 = 3

011 = 5

100 = 8

101 = 12

110 = 24

111 = 48

Time for 33% to 100%

35 sec

17.6 sec

11.8 sec

7.0 sec

4.4 sec

3.0 sec

1.6 sec

0.8 sec

[7:5]

Ramp Rate 2

R/W

These bits set the ramp rate for the enhanced acoustics mode for PWM2. Default = 000.

Time Slot Increase

000 = 1

001 = 2

010 = 3

011 = 5

100 = 8

101 = 12

110 = 24

111 = 48

Time for 33% to 100%

35 sec

17.6 sec

11.8 sec

7.0 sec

4.4 sec

3.0 sec

1.6 sec

0.8 sec

1. POR = 0x00, Lock = Y, SW Reset = Y.

Table 53. Register 0x1B — Enhanced Acoustics Register 2

Bit

Mnemonic

R/W

Description

En3

R/W

Setting this bit to 1 enables the enhanced acoustics mode for PWM3; 0 disables it. Default = 0.

En4

R/W

Setting this bit to 1 enables the enhanced acoustics mode for PWM4; 0 disables it. Default = 0.

[4:2]

Ramp Rate 3

R/W

These bits set the ramp rate for the enhanced acoustics mode for PWM3. Default = 000.

Time Slot Increase

000 = 1

001 = 2

010 = 3

011 = 5

100 = 8

101 = 12

110 = 24

111 = 48

Time for 33% to 100%

37.5 sec

18.8 sec

12.5 sec

7.5 sec

4.7 sec

3.1 sec

1.6 sec

0.8 sec

[7:5]

Ramp Rate 4

R/W

These bits set the ramp rate for the enhanced acoustics mode for PWM4. Default = 000.

Time Slot Increase

000 = 1

001 = 2

010 = 3

011 = 5

100 = 8

101 = 12

110 = 24

111 = 48

Time for 33% to 100%

35 sec

17.6 sec

11.8 sec

7.0 sec

4.4 sec

3.0 sec

1.6 sec

0.8 sec

1. POR = 0x00, Lock = Y, SW Reset = Y.

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