AD9548SLASHPCBZ datasheet(85/112 Pages) AD

85 / 112 page

AD9548

Rev. 0 | Page 85 of 112

Table 86. Fractional Feedback Divider—Profile 0

Address

Bits

Bit Name

Description

0626

[7:0]

V, Bits[7:0]

0627

[7:4]

U, Bits[3:0]

[3:2]

Unused

[1:0]

V, Bits[9:8]

0628

[7:6]

Unused

[5:0]

U, Bits[9:4]

Table 87. Lock Detectors—Profile 0

Address

Bits

Bit Name

Description

0629

[7:0]

Phase lock threshold

(in picoseconds)

Phase lock threshold, Bits[7:0]

062A

[7:0]

Phase lock threshold, Bits[15:8]

062B

[7:0]

Phase lock fill rate

Phase lock fill rate, Bits[7:0]

062C

[7:0]

Phase lock drain rate

Phase lock drain rate, Bits[7:0]

062D

[7:0]

Frequency lock thresh-

old (in picoseconds)

Frequency lock threshold, Bits[7:0]

062E

[7:0]

Frequency lock threshold, Bits[15:8]

062F

[7:0]

Frequency lock threshold, Bits[23:16]

0630

[7:0]

Frequency lock fill rate

Frequency lock fill rate, Bits[7:0]

0631

[7:0]

Frequency lock drain

rate

Frequency lock drain rate, Bits[7:0]

Table 88. Priorities—Profile 1

Address

Bits

Bit Name

Description

0632

[7:6]

unused

[5:3]

Promoted priority

User-assigned priority level (0 to 7) of the reference associated with Profile 1 while

that reference is the active reference. The numeric value of the promoted priority

must be less than or equal to the numeric value of the selection priority.

[2:0]

Selection priority

User-assigned priority level (0 to 7) of the reference associated with Profile 1, which

ranks that reference relative to the others.

Table 89. Reference Period—Profile 1

Address

Bits

Bit Name

Description

0633

[7:0]

Reference period (in

femtoseconds)

Nominal reference period, Bits[7:0]

0634

[7:0]

Nominal reference period, Bits[15:8]

0635

[7:0]

Nominal reference period, Bits[23:16]

0636

[7:0]

Nominal reference period, Bits[31:24]

0637

[7:0]

Nominal reference period, Bits[39:32]

0638

[7:0]

Nominal reference period, Bits[47:40]

0639

[7:2]

Unused

[1:0]

Reference period

Nominal reference period, Bits[49:48]

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