AD4693BCPZ datasheet(58/77 Pages) AD

58 / 77 page

Data Sheet

AD4693/AD4694

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Rev. 0 | 58 of 77

The AD4693/AD4694 device configurations are set via their config-

uration registers. The AD4693/AD4694 SPIs are used to read and

write to the configuration registers as described in the Register

Access section.

The AD4693/AD4694 configuration registers are mapped to a set

of register addresses. Each address value corresponds to a byte

of register data. As described in the Register Length section, most

registers are one byte long, but some are multiple bytes long. Table

24 shows the register memory address assignments for all of the

AD4693/AD4694 configuration registers.

Bits and fields in the AD4693/AD4694 configuration registers are

defined as read only, read/write, or read/write-1-to-clear. In the

access column of Table 24, registers that contain exclusively read-

only bits are represented with R and registers with writable bits are

represented with R/W. In the access column of Table 25 through

Table 60, read only bits are represented with R, read/write bits are

represented with R/W, and write 1 to clear bits are represented with

R/W1C.

The SPI_STATUS register contains various error flags that indicate

whether an SPI read or write transaction violated one of several

aspects of the protocols outlined in the Register Access section

(see Table 35). The SPI_ERROR bit in the status register is the

bitwise logical OR of the error flags in the SPI_STATUS register

(see Table 36).

Table 24. AD4693/AD4694 Configuration Register Summary

Address

Name

Description

Reset

Access

0x0000

SPI_CONFIG_A

SPI Configuration A.

0x10

R/W

0x0001

SPI_CONFIG_B

SPI Configuration B.

0x00

R/W

0x0003

DEVICE_TYPE

Device Type.

0x07

0x0004

PRODUCT_ID_LSB

Product Identification (LSB).

0x0005

PRODUCT_ID_MSB

Product Identification (MSB).

0x00

0x000A

SCRATCH_PAD

Scratch Pad.

0x00

R/W

0x000C

VENDOR_ID_LSB

Vendor ID (LSB).

0x56

0x000D

VENDOR_ID_MSB

Vendor ID (MSB).

0x04

0x000E

STREAM_MODE

Reserved.

0x00

R/W

0x0010

SPI_CONFIG_C

SPI Configuration C.

0x23

R/W

0x0011

SPI_STATUS

SPI Status.

0x00

R/W

0x0014

DEVICE_STATUS

Device status.

0x20

0x001A

CLAMP_STATUS

Clamp status.

0x00

0x0020

DEVICE_SETUP

Device setup.

0x10

R/W

0x0021

REF_CTRL

Reference control.

0x10

R/W

0x0022

SEQ_CTRL

Sequencer control.

0x80

R/W

0x0023

OSC_FREQ_REG

Internal oscillator frequency.

0x00

R/W

0x0025

STD_SEQ_CONFIG

Standard sequencer configuration.

0x0001

R/W

0x0030 to 0x0037

CONFIG_INn

Analog input settings configuration.

0x08

R/W

0x0100 to 0x017F

AS_SLOTn

Advanced sequencer slot.

0x00

R/W

0x0180

OSC_EN_REG

Internal oscillator enable.

0x00

R/W

0x0181

STATE_RESET_REG

State reset.

0x01

R/W

0x0182

ADC_SETUP

ADC setup.

0x00

R/W

0x0184

ACC_MASK

Accumulator mask.

0xFE

R/W

0x0186 to 0x018D

ACC_DEPTH_INn

Accumulator depth.

0x3F

R/W

0x0196

GP0_GP1_MODE

GP0 and GP1 control.

0x00

R/W

0x0197

GP2_GP3_MODE

GP2 and GP3 control.

0x00

R/W

0x01A0

GPIO_READ

GPIO logic input state.

0x00

0x01B0

ACC_STS_FULL

Accumulator full status.

0x00

0x01B2

ACC_STS_OVR

Accumulator overrun status.

0x00

0x01B4

ACC_STS_SAT

Accumulator saturation status.

0x00

0x01C0 to 0x01C7

ACC_STATUS_INn

Accumulator general status.

0x00

0x0201 to 0x020F

AVG_INn

Averaging filter data.

0x00

0x0222 to 0x0237

AVG_STS_INn

Averaging filter data plus status.

0x000

0x0252 to 0x0267

ACC_INn

Accumulator data.

0x000

0x0283 to 0x029F

ACC_STS_INn

Accumulator data plus status.

0x0000

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