AD7770 datasheet(89/94 Pages) AD

89 / 94 page

Data Sheet

AD7770

Rev. A | Page 89 of 94

GENERAL ERRORS REGISTER 1

Address: 0x059, Reset: 0x00, Name: GEN_ERR_REG_1

SPI CRC error

A CRC of the memory map contents

is run periodically to check for errors

SPI invalid write address

A CRC of the fuse contents is run

periodically to check for errors in

the fuses

SPI invalid read address

SPI clock counter error

[7:6] RESERVED

[0] SPI_CRC_ERR (R)

[5] MEMMAP_CRC_ERR (R)

[1] SPI_INVALID_WRITE_ERR (R)

[4] ROM_CRC_ERR (R)

[2] SPI_INVALID_READ_ERR (R)

[3] SPI_CLK_COUNT_ERR (R)

Table 132. Bit Descriptions for GEN_ERR_REG_1

Bits

Bit Name

Settings

Description

Reset

Access

[7:6]

RESERVED

Reserved

0x0

MEMMAP_CRC_ERR

A CRC of the memory map contents is run periodically to check for errors

0x0

ROM_CRC_ERR

A CRC of the fuse contents is run periodically to check for errors in the fuses

0x0

SPI_CLK_COUNT_ERR

SPI clock counter error

0x0

SPI_INVALID_READ_ERR

SPI invalid read address

0x0

SPI_INVALID_WRITE_ERR

SPI invalid write address

0x0

SPI_CRC_ERR

SPI CRC error

0x0

GENERAL ERRORS REGISTER 1 ENABLE

Address: 0x05A, Reset: 0x3E, Name: GEN_ERR_REG_1_EN

Table 133. Bit Descriptions for GEN_ERR_REG_1_EN

Bits

Bit Name

Settings

Description

Reset

Access

[7:6]

RESERVED

Reserved

0x0

MEMMAP_CRC_TEST_EN

Memory Map CRC Test (Error?) Enable

0x1

R/W

ROM_CRC_TEST_EN

Fuse CRC Test Enable

0x1

R/W

SPI_CLK_COUNT_TEST_EN

SPI Clock Counter Test Enable

0x1

R/W

SPI_INVALID_READ_TEST_EN

SPI Invalid Read Address Test Enable

0x1

R/W

SPI_INVALID_WRITE_TEST_EN

SPI Invalid Write Address Test Enable

0x1

R/W

SPI_CRC_TEST_EN

SPI CRC Error Test Enable

0x0

R/W

GENERAL ERRORS REGISTER 2

Address: 0x05B, Reset: 0x00, Name: GEN_ERR_REG_2

DRegCap power supply error

Reset detected

AReg2Cap power supply error

Clock not switched over

AReg1Cap power supply error

[7:6] RESERVED

[0] DLDO_PSM_ERR (R)

[5] RESET_DETECTED (R)

[1] ALDO2_PSM_ERR (R)

[4] EXT_MCLK_SWITCH_ERR (R)

[2] ALDO1_PSM_ERR (R)

[3] RESERVED

AD7770 Datasheet(PDF) 89 Page - Analog Devices

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