Datasheet
AD9548 Data Sheet
Rev. E | Page 82 of 112
Table 76. Reference Logic Family
Address Bits Bit Name Description
0x0501 [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
0x0502 [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 77. Manual Reference Profile Selection
Address Bits Bit Name Description
0x0503 [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
0x0504 [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
0x0505 [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
0x0506 [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