AD5371BBCZ datasheet(21/25 Pages) AD

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Preliminary Technical Data

AD5371

Rev. P

rF | Page 21 of 25

Table 12. Special Function Codes

SPECIAL FUNCTION CODE

DATA

F15-F0

ACTION

0000 0000 0000 0000

NOP

XXXX XXXX XXXX X[F2:F0]

Write control register

F2 = 1

Select B reg for input; F2 = 0

Select A reg for input

F1 = 1

En temp shutdown; F1 = 0

Disable temp shutdown

F0 = 1

Soft power down; F0 = 0

soft power up

XX[F13:F0]

Write data in F13:F0 to OFS0 register

XX[F13:F0]

Write data in F13:F0 to OFS1 register

XX[F13:F0]

Write data in F13:F0 to OFS2 register

See Table 13

Select register for readback

XXXX XXXX[F7:F0]

Write data in F7:F0 to A/B Select Register 0

XXXX XXXX[F7:F0]

Write data in F7:F0 to A/B Select Register 1

XXXX XXXX[F7:F0]

Write data in F7:F0 to A/B Select Register 2

XXXX XXXX[F7:F0]

Write data in F7:F0 to A/B Select Register 3

XXXX XXXX[F7:F0]

Write data in F7:F0 to A/B Select Register 4

XXXX XXXX[F7:F0]

Block write A/B Select Registers

F7:F0 = 0, write all 0’s (all channels use X2A register)

F7:F0 = 1, wrote all 1’s (all channels use X2B register)

Table 13. Address Codes for Data Readback

F15

F14

F13

F12

F11

F10

A Register

B Register

C Register

Bits F12 to F7 select channel to be read

back, from Channel 0 = 001000 to

Channel 39 = 101111

M Register

Control Register

OFS0 Data Register

OFS1 Data Register

OFS2 Data Register

A/B Select Register 0

A/B Select Register 1

A/B Select Register 2

A/B Select Register 3

A/B Select Register 4

Note: F6 to F0 are don’t care for data readback function.

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