ADPD4200 datasheet(69/93 Pages) AD

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Data Sheet

ADPD4200

analog.com

Rev. 0 | 69 of 93

GLOBAL CONFIGURATION REGISTERS

Table 26. Global Configuration Register Details

Addr

Name

Bits

Bit Name

Description

Reset

Access

0x000D

TS_FREQ

[15:0]

TIMESLOT_PERIOD_L

Lower 16 bits of time slot period in low frequency oscillator cycles. The time

slot rate is (low frequency oscillator frequency) ÷ (TIMESLOT_PERIOD_x).

The default value operates at 100 Hz when using the 1 MHz low frequency

oscillator.

0x2710

R/W

0x000E

TS_FREQH

[15:7]

Reserved

Reserved.

0x0

[6:0]

TIMESLOT_PERIOD_H

Upper seven bits of time slot period in low frequency oscillator cycles. The time

slot rate is (low frequency oscillator frequency) ÷ (TIMESLOT_PERIOD_x).

The default value operates at 100 Hz when using the 1 MHz low frequency

oscillator.

0x0

R/W

0x000F

SYS_CTL

SW_RESET

Software Reset. Write 1 to this bit to assert a software reset, which stops all

AFE operations and resets the device to its default values. Software reset does

not reset the SPI port.

0x0

R/W

[14:10]

Reserved

Reserved.

0x0

[9:8]

ALT_CLOCKS

External Clock Select.

0x0

R/W

00: use internal low frequency oscillator and high frequency oscillator.

01: use external low frequency oscillator.

02: use external high frequency oscillator and internal low frequency oscillator.

03: use external high frequency oscillator and generate low frequency oscillator

from high frequency oscillator.

[7:6]

ALT_CLK_GPIO

Alternate Clock GPIO Select.

0x0

R/W

00: use GPIO0 for alternate clock.

01: use GPIO1 for alternate clock.

[5:3]

Reserved

Write 0x0.

0x0

R/W

LFOSC_SEL

Selects low frequency oscillator. This bit selects between the 32 kHz and 1

MHz low speed oscillator.

0x0

R/W

0: use the 32 kHz oscillator as the low frequency clock.

1: use the 1 MHz oscillator as the low frequency clock.

OSC_1M_EN

Enables 1 MHz low frequency oscillator. This bit turns on the 1 MHz low

frequency oscillator, which must be left running during all operations while

using this oscillator.

0x0

R/W

OSC_32K_EN

Enables 32 kHz low frequency oscillator. This bit turns on the 32 kHz low

frequency oscillator, which must be left running during all operations while

using this oscillator.

0x0

R/W

0x0010

OPMODE

[15:12]

Reserved

Reserved.

0x0

[11:8]

TIMESLOT_EN

Time Slot Enable Control.

0x0

R/W

0000: Time Slot Sequence A only.

0001: Time Slot Sequence AB.

0010: Time Slot Sequence ABC.

0011: Time Slot Sequence ABCD.

0100: Time Slot Sequence ABCDE.

0101: Time Slot Sequence ABCDEF.

0110: Time Slot Sequence ABCDEFG.

0111: Time Slot Sequence ABCDEFGH.

1000: Time Slot Sequence ABCDEFGHI.

1001: Time Slot Sequence ABCDEFGHIJ.

1010: Time Slot Sequence ABCDEFGHIJK.

1011: Time Slot Sequence ABCDEFGHIJKL.

[7:1]

Reserved

Reserved.

0x0

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