ADFS7124-4BBCPZ datasheet(85/93 Pages) AD

85 / 93 page

Data Sheet

ADFS7124-4

ON-CHIP REGISTERS

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Rev. 0 | 85 of 93

Table 68. IO_CONTROL_1 Register Bit Descriptions (Continued)

Bits

Bit Name

Description

1101 = reserved

1110 = IOUT0 is available on the AIN6 pin.

1111 = IOUT0 is available on the AIN7 pin.

IO_CONTROL_2 REGISTER

RS[5:0] = 0, 0, 0, 1, 0, 0 Power-On/Reset = 0x0000

Table 69 outlines the bit designations for the register. Bit 15 is the first bit of the data stream. The number in parentheses indicates the

power-on/reset default status of that bit. The internal bias voltage can be enabled on multiple channels.

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

VBIAS7 (0)

VBIAS6 (0)

0 (0)

VBIAS5 (0)

VBIAS4 (0)

0 (0)

VBIAS3 (0)

VBIAS2 (0)

0 (0)

VBIAS1 (0)

VBIAS0 (0)

Table 69. IO_CONTROL_2 Register Bit Descriptions

Bits

Bit Name

Description

VBIAS7

Enable the bias voltage on the AIN7 channel. When set, the internal bias voltage is available on AIN7.

VBIAS6

Enable the bias voltage on the AIN6 channel. When set, the internal bias voltage is available on AIN6.

13, 12

This bit must be programmed with a Logic 0 for correct operation.

VBIAS5

Enable the bias voltage on the AIN5 channel. When set, the internal bias voltage is available on AIN5.

VBIAS4

Enable the bias voltage on the AIN4 channel. When set, the internal bias voltage is available on AIN4.

9, 8, 7, 6

This bit must be programmed with a Logic 0 for correct operation.

VBIAS3

Enable the bias voltage on the AIN3 channel. When set, the internal bias voltage is available on AIN3.

VBIAS2

Enable the bias voltage on the AIN2 channel. When set, the internal bias voltage is available on AIN2.

3, 2

This bit must be programmed with a Logic 0 for correct operation.

VBIAS1

Enable the bias voltage on the AIN1 channel. When set, the internal bias voltage is available on AIN1.

VBIAS0

Enable the bias voltage on the AIN0 channel. When set, the internal bias voltage is available on AIN0.

ID REGISTER

RS[5:0] = 0, 0, 0, 1, 0, 1 Power-On/Reset = 0x07

The identification number for the ADFS7124-4 is stored in the ID register. This is a read only register.

ERROR REGISTER

RS[5:0] = 0, 0, 0, 1, 1, 0

Power-On/Reset = 0x000000

Diagnostics, such as checking overvoltages and checking the SPI, are included on the ADFS7124-4. The error register contains the flags for

the different diagnostic functions. The functions are enabled and disabled using the ERROR_EN register.

Table 70 outlines the bit designations for the register. Bit 23 is the first bit of the data stream. The number in parentheses indicates the

power-on/reset default status of that bit.

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

0 (0)

LDO_CAP_ERR

(0)

ADC_CAL_ERR

(0)

ADC_CONV_ERR

(0)

ADC_SAT_ERR (0)

AINP_OV_ERR (0)

AINP_UV_ERR (0)

AINM_OV_ERR (0)

AINM_UV_ERR

(0)

REF_DET_ERR

(0)

0 (0)

DLDO_PSM_ERR

(0)

0 (0)

ALDO_PSM_ERR

(0)

SPI_IGNORE_ERR

(0)

SPI_SCLK_CNT_ERR

(0)

SPI_READ_ERR

(0)

SPI_WRITE_ERR

(0)

SPI_CRC_ERR

(0)

MM_CRC_ERR (0) ROM_CRC_ERR

(0)

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