AD9548SLASHPCBZ datasheet(82/112 Pages) AD

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AD9548

Rev. 0 | Page 82 of 112

Table 75. Reference Logic Family

Address

Bits

Bit Name

Description

0501

[7:6]

Ref BB logic family

Select the logic family for the REF BB input receiver (ignored if Bits[5:4] = 00)

00 (default) = disabled

01 = 1.2 V to 1.5 V CMOS

10 = 1.8 V to 2.5 V CMOS

11 = 3.0 V to 3.3 V CMOS

[5:4]

Ref B logic family

Select logic family for REF B input receiver.

00 (default) = differential (REFB/BB is positive/negative input)

01 = 1.2 V to 1.5 V CMOS

10 = 1.8 V to 2.5 V CMOS

11 = 3.0 V to 3.3 V CMOS

[3:2]

Ref AA logic family

The same as Register 0501, Bits[7:6] but for REF AA

[1:0]

Ref A logic family

The same as Register 0501, Bits[5:4] but for REF A

0502

[7:6]

Ref DD logic family

The same as Register 0501, Bits[7:6] but for REF DD

[5:4]

Ref D logic family

The same as Register 0501, Bits[5:4] but for REF D

[3:2]

Ref CC logic family

The same as Register 0501, Bits[7:6] but for REF CC

[1:0]

Ref C logic family

The same as Register 0501, Bits[5:4] but for REF C

Table 76. Manual Reference Profile Selection

Address

Bits

Bit Name

Description

0503

[7]

Enable Ref AA manual

profile

Select manual or automatic reference profile assignment for REF AA

0 (default) = automatic

1 = manual

[6:4]

Ref AA manual profile

Manual profile assignment

000 (default) = Profile 0

001 = Profile 1

010 = Profile 2

011 = Profile 3

100 = Profile 4

101 = Profile 5

110 = Profile 6

111 = Profile 7

[3]

Enable Ref A manual

profile

Same as Register 0503, Bit 7 but for REF A

[2:0]

Ref A manual profile

Same as Register 0503, Bits[6:4] but for REF A

0504

[7]

Enable Ref BB manual

profile

Same as Register 0503, Bit 7 but for REF B

[6:4]

Ref BB manual profile

Same as Register 0503, Bits[6:4] but for REF BB

[3]

Enable Ref B manual

profile

Same as Register 0503, Bit 7 but for REF B

[2:0]

Ref B manual profile

Same as Register 0503, Bits[6:4] but for REF B

0505

[7]

Enable Ref CC manual

profile

Same as Register 0503, Bit 7 but for REF CC

[6:4]

Ref CC manual profile

Same as Register 0503, Bits[6:4] but for REF CC

[3]

Enable Ref C manual

profile

Same as Register 050, Bit 7 but for REF C

[2:0]

Ref C manual profile

Same as Register 0503, Bits[6:4] but for REF C

0506

[7]

Enable Ref DD M

manual profile

Same as Register 0503, Bit 7 but for REF DD

[6:4]

Ref DD manual profile

Same as Register 0503, Bits[6:4] but for REF DD

[3]

Enable Ref D manual

profile

Same as Register 0503, Bit 7 but for REF D

[2:0]

Ref D manual profile

Same as Register 0503, Bits[6:4] but for REF D

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