ADP1055ACPZ-R7 datasheet(84/140 Pages) AD

84 / 140 page

ADP1055

Data Sheet

Rev. A | Page 84 of 140

EEPROM_CRC_CHKSUM

Table 115. Register 0xD1—EEPROM_CRC_CHKSUM

Bits

Bit Name

R/W

Description

[7:0]

CRC checksum

Return the CRC checksum value from the EEPROM download operation.

EEPROM_NUM_RD_BYTES

Table 116. Register 0xD2—EEPROM_NUM_RD_BYTES

Bits

Bit Name

R/W

Description

[7:0]

Number of read bytes returned

R/W

Set the number of read bytes returned when using the EEPROM_PAGE_xx commands.

EEPROM_ADDR_OFFSET

Table 117. Register 0xD3—EEPROM_ADDR_OFFSET

Bits

Bit Name

R/W

Description

[15:0]

Address offset

R/W

Sets the address offset of the current EEPROM page.

EEPROM_PAGE_ERASE

Table 118. Register 0xD4—EEPROM_PAGE_ERASE

Bits

Bit Name

R/W

Description

[7:0]

Page erase

Perform a page erase on the selected EEPROM page (Page 6 to Page 15). Wait 35 ms after each page

erase operation. The EEPROM must first be unlocked. Page 0 to Page 5 are reserved and their

contents must not be erased.

EEPROM_PASSWORD

Table 119. Register 0xD5—EEPROM_PASSWORD

Bits

Bit Name

R/W

Description

[7:0]

EEPROM

password

Write the password to this register two consecutive times to unlock the EEPROM and/or to change

the EEPROM password. The factory default password is 0xFF. To lock the EEPROM, type any value

other than the password to this register.

TRIM_PASSWORD

Table 120. Register 0xD6—TRIM_PASSWORD

Bits

Bit Name

R/W

Description

[7:0]

Trim password

Write the password to this register to unlock the trim registers for write access. Write the trim

password twice to unlock the register; write any other value to exit. The trim password is the same

as the EEPROM password (0xFF).

KEY_CODE

Table 121. Register 0xD7—KEY_CODE

Bits

Bit Name

R/W

Description

[31:0]

Keycode

Block read/

write

Write the 32-bit keycode to this command to unlock access to Command 0xF4 and Command 0xF5.

Write the key code password twice to unlock the commands; write any other value to lock them.

The factory default password is 0xFFFFFFFF. The procedure includes a block write of four bytes. The

readback returns five bytes; the fifth byte is 0 if locked or 1 if unlocked.

EEPROM_INFO

Table 122. Register 0xF1—EEPROM_INFO

Bits

Bit Name

R/W

Description

[7:0]

EEPROM_INFO

Block read

Block read of the manufacturer data in the EEPROM.

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