AD9558
Data Sheet
Rev. B | Page 100 of 104
Table 121. EEPROM Storage Sequence for REFA Profile Settings
Address
Bits
Bit Name
Description
0x0E2A
[7:0]
REFA Profile
The default value of this register is 0x26, which the controller interprets as a data instruction. Its decimal
value is 38, so this tells the controller to transfer 39 bytes of data (38 + 1), beginning at the address that
is specified by the next two bytes. The controller stores 0x26 in the EEPROM and increments the EEPROM
address pointer.
0x0E2B
[7:0]
The default value of these two registers is 0x0700. Note that Register 0x0E2B and Register 0x0E2C are
the most significant and least significant bytes of the target address, respectively. Because the previous
register contains a data instruction, these two registers define a starting address (in this case, 0x0700).
The controller stores 0x0700 in the EEPROM and increments the EEPROM pointer by 2. It then transfers
39 bytes from the register map (beginning at Address 0x0700) to the EEPROM and increments the
EEPROM address pointer by 40 (39 data bytes and one checksum byte). The 39 bytes transferred
correspond to the REFA profile parameters in the register map.
0x0E2C
[7:0]
Table 122. EEPROM Storage Sequence for REFB Profile Settings
Address
Bits
Bit Name
Description
0x0E2D
[7:0]
REFB profile
The default value of this register is 0x26, which the controller interprets as a data instruction. Its decimal
value is 38, so this tells the controller to transfer 39 bytes of data (38 + 1), beginning at the address that is
specified by the next two bytes. The controller stores 0x26 in the EEPROM and increments the EEPROM
address pointer.
0x0E2E
[7:0]
The default value of these two registers is 0x0740. Note that Register 0x0E2E and Register 0x0E2F are the
most significant and least significant bytes of the target address, respectively. Because the previous register
contains a data instruction, these two registers define a starting address (in this case, 0x0740). The controller
stores 0x0740 in the EEPROM and increments the EEPROM pointer by 2. It then transfers 39 bytes from the
register map (beginning at Address 0x0740) to the EEPROM and increments the EEPROM address pointer
by 40 (39 data bytes and one checksum byte). The 39 bytes transferred correspond to the REFB profile
parameters in the register map.
0x0E2F
[7:0]
Table 123. EEPROM Storage Sequence for REFC Profile Settings
Address
Bits
Bit Name
Description
0x0E30
[7:0]
REFC profile
The default value of this register is 0x26, which the controller interprets as a data instruction. Its decimal
value is 38, so this tells the controller to transfer 39 bytes of data (38 + 1), beginning at the address that is
specified by the next two bytes. The controller stores 0x26 in the EEPROM and increments the EEPROM
address pointer.
0x0E31
[7:0]
The default value of these two registers is 0x0780. Note that Register 0x0E31 and Register 0x0E32 are
the most significant and least significant bytes of the target address, respectively. Because the previous
register contains a data instruction, these two registers define a starting address (in this case, 0x0780).
The controller stores 0x0780 in the EEPROM and increments the EEPROM pointer by 2. It then transfers
39 bytes from the register map (beginning at Address 0x0780) to the EEPROM and increments the
EEPROM address pointer by 40 (39 data bytes and one checksum byte). The 39 bytes transferred
correspond to the REFC profile parameters in the register map.
0x0E32
[7:0]
Table 124. EEPROM Storage Sequence for REFD Profile Settings
Address
Bits
Bit Name
Description
0x0E33
[7:0]
REFD profile
The default value of this register is 0x26, which the controller interprets as a data instruction. Its decimal
value is 38, so this tells the controller to transfer 39 bytes of data (38 + 1), beginning at the address that is
specified by the next two bytes. The controller stores 0x26 in the EEPROM and increments the EEPROM
address pointer.
0x0E34
[7:0]
The default value of these two registers is 0x07C0. Note that Register 0x0E34 and Register 0x0E35 are
the most significant and least significant bytes of the target address, respectively. Because the previous
register contains a data instruction, these two registers define a starting address (in this case, 0x07C0).
The controller stores 0x07C0 in the EEPROM and increments the EEPROM pointer by 2. It then transfers
39 bytes from the register map (beginning at Address 0x07C0) to the EEPROM and increments the EEPROM
address pointer by 40 (39 data bytes and one checksum byte). The 39 bytes transferred correspond to
the REFD profile parameters in the register map.
0x0E35
[7:0]