ADP5585ACBZ-00-R7 datasheet(32/40 Pages) AD

32 / 40 page

ADP5585

Data Sheet

Rev. C | Page 32 of 40

Bit(s)

Bit Name

Access

Description

4 to 2

RESET_TRIG_TIME[2:0]

Read/write

Defines the length of time that the reset events must be active before a reset

signal is generated. All events must be active at the same time for the same

duration. RESET_TRIG_TIME[2:0] is common to both RESET1 and RESET2.

000 = immediate.

001 = 1.0 sec.

010 = 1.5 sec.

011 = 2.0 sec.

100 = 2.5 sec.

101 = 3.0 sec.

110 = 3.5 sec.

111 = 4.0 sec.

1 to 0

RESET_PULSE_WIDTH[1:0]

Read/write

Defines the pulse width of the reset signals. RESET_PULSE_WIDTH[1:0] is common

to both RESET1 and RESET2.

00 = 500 µs.

01 = 1 ms.

10 = 2 ms.

11 = 10 ms.

PWM_OFFT_LOW Register 0x2F

Table 55. Register 0x2F, PWM_OFFT_LOW Bit Descriptions

Bit(s)

Bit Name

Access

Description

7 to 0

PWM_OFFT_LOW_BYTE[7:0]

Read/write

Lower eight bits of PWM off time.

PWM_OFFT_HIGH Register 0x30

Table 56. PWM_OFFT_HIGH Bit Descriptions

Bit(s)

Bit Name

Access

Description

7 to 0

PWM_OFFT_HIGH_BYTE[7:0]

Read/write

Upper eight bits of PWM off time.

PWM_ONT_LOW Register 0x31

Table 57. PWM_ONT_LOW Bit Descriptions

Bit(s)

Bit Name

Access

Description

7 to 0

PWM_ONT_LOW_BYTE[7:0]

Read/write

Lower eight bits of PWM on time.

PWM_ONT_HIGH Register 0x32

Table 58. PWM_ONT_HIGH Bit Descriptions

Bit(s)

Bit Name

Access

Description

7 to 0

PWM_ONT_HIGH_BYTE[7:0]

Read/write

Upper eight bits of PWM on time. Note that updated PWM times are not latched

until this byte is written to. PWM count times are referenced from the internal

oscillator. The fastest oscillator setting is 500 kHz (2 µs increments). Therefore, the

maximum period is

2 µs × 216 = 131 ms

This gives PWM frequencies from 500 kHz down to 7.6 Hz.

PWM_CFG Register 0x33

Table 59. PWM_CFG Bit Descriptions

Bit(s)

Bit Name

Access

Description

7 to 3

N/A

Reserved.

PWM_IN_AND

0 = no external AND’ing.

1 = PWM signal AND’ed with an externally supplied PWM signal (C3).

PWM_MODE

Read/write

Defines PWM mode.

0 = continuous.

1 = executes one PWM period, then sets PWM_EN to 0.

PWM_EN

Read/write

Enable PWM generator.

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