AD3531 datasheet(32/44 Pages) AD

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Data Sheet

AD3531/AD3531R

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Rev. 0 | 32 of 44

INTERFACE CONFIGURATION A REGISTER

Address: 0x00, Reset: 0x10, Name: INTERFACE_CONFIG_A

INTERFACE Configuration Settings

[7] SW_RESET (R/W)

[0] RESET_SW (R/W)

[6] RESERVED

[3:1] RESERVED

[5] ADDR_ASCENSION (R/W)

[4] SDO_ENABLE (R/W)

Table 11. Bit Descriptions for INTERFACE_CONFIG_A

Bits

Bit Name

Description

Reset

Access

SW_RESET

First of Two of SW_RESET Bits. This bit appears in two locations in this register. Both locations must be

written at the same time to trigger a software reset of the part. All registers except for this register are reset

to their default values.

0x0

R/W

RESERVED

Reserved.

0x0

ADDR_ASCENSION

Determines Sequential Addressing Behavior.

0x0

R/W

0: Address is Decremented by One When Streaming.

1: Address is Incremented by One When Streaming.

SDO_ENABLE

SDO Pin Enable. 0: SDO pin disabled 1: SDO pin enabled

0x1

R/W

[3:1]

RESERVED

Reserved.

0x0

RESET_SW

Second of Two of SW_RESET Bits. This bit appears in two locations in this register. Both locations must be

written at the same time to trigger a software reset of the part. All registers except for this register are reset

to their default values.

0x0

R/W

INTERFACE CONFIGURATION B REGISTER

Address: 0x01, Reset: 0x00, Name: INTERFACE_CONFIG_B

Additional INTERFACE Configuration Settings

[7] SINGLE_INST (R/W)

[2:0] RESERVED

[6:4] RESERVED

[3] SHORT_INSTRUCTION (R)

Table 12. Bit Descriptions for INTERFACE_CONFIG_B

Bits

Bit Name

Description

Reset

Access

SINGLE_INST

Select Streaming or Single Instruction Mode.

0x0

R/W

0: Streaming Mode is Enabled. The address increments/decrements as successive data bytes are

received.

1: Single Instruction Mode is Enabled.

[6:4]

RESERVED

Reserved.

0x0

SHORT_INSTRUCTION

Set the Instruction Phase Address to 7 or 15-bits.

0x0

R/W

0: 15-bit Addressing.

1: 7-bit Addressing.

[2:0]

RESERVED

Reserved.

0x0

DEVICE CONFIGURATION REGISTER

Address: 0x02, Reset: 0x00, Name: DEVICE_CONFIG

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