AD9557SLASHPCBZ datasheet(43/92 Pages) AD

43 / 92 page

Data Sheet

AD9557

Rev. A | Page 43 of 92

The following changes write Register 0x0200 first and then

issue an I/O update before writing the remaining M pin

configuration registers in Register 0x0201 to Register 0x0208.

The default EEPROM loading sequence from Register 0x0E10

to Register 0x0E16 is unchanged. The following steps must

be inserted into the EEPROM storage sequence:

R0x0E17 = 0x00 # Write one byte

R0x0E18 = 0x02 # at Register 0x0200

R0x0E19 = 0x00 #

R0x0E1A = 0x80 # Op code for I/O

Update R0x0E1B = 0x10 # Transfer 17 instead of

18 bytes

R0x0E1C = 0x02 # Transfer starts at Register address

R0x0E1D = 0x01 # 0x0201 instead of 0x0200

The rest of the EEPROM loading sequence is the same as the

default EEPROM loading sequence, except that the register

address of the EEPROM storage sequence is shifted down four

bytes from the default. For example,

•

R0x0E1E = default value of Register 0x0E1A = 0x2E

•

R0x0E1F = default value of Register 0x0E1B = 0x03

•

R0x0E20 = default value of Register 0x0E1C = 0x00

•

…

•

R0x0E40 = default value of Register 0x0E1C = 0x3C = 0xFF

•

(end of data)

AD9557/PCBZ 数据表(PDF) 43 Page - Analog Devices