Datasheet

AD9548 Data Sheet
Rev. E | Page 86 of 112
Table 91. Tolerance—Profile 1
Address Bits Bit Name Description
0x063A [7:0] Inner tolerance Inner tolerance, Bits[7:0]
0x063B
[7:0]
Inner tolerance, Bits[15:8]
0x063C [7:4] Unused
[3:0] Inner tolerance Inner tolerance, Bits[19:16]
0x063D [7:0] Outer tolerance Outer tolerance, Bits[7:0]
0x063E [7:0] Outer tolerance, Bits[15:8]
0x063F [7:4] Unused
[3:0] Outer tolerance Outer tolerance, Bits[19:16]
Table 92. Validation Timer—Profile 1
Address Bits Bit Name Description
0x0640 [7:0] Validation timer
(in milliseconds)
Validation timer, Bits[7:0]
0x0641 [7:0] Validation timer, Bits[15:8]
Table 93. Redetect Timer—Profile 1
Address Bits Bit Name Description
0x0642 [7:0] Redetect timer
(in milliseconds)
Redetect timer, Bits[7:0]
0x0643 [7:0] Redetect timer, Bits[15:8]
Table 94. Digital Loop Filter Coefficients—Profile 1
1
Address Bits Bit Name Description
0x0644 [7:0] Alpha-0 linear Alpha-0 coefficient linear, Bits[7:0]
0x0645 [7:0] Alpha-0 coefficient linear, Bits[15:8]
0x0646 [7:6] Alpha-2 exponent Alpha-2 coefficient exponent, Bits[1:0]
[5:0] Alpha-1 exponent Alpha-1 coefficient exponent, Bits[5:0]
0x 0647 [7:1] Beta -0 linear Beta-0 coefficient linear, Bits[6:0]
[0] Alpha-2 exponent Alpha-2 coefficient exponent, Bit 2
0x0648
[7:0]
Beta-0 linear
Beta-0 coefficient linear, Bits[14:7]
0x0649 [7] Unused
[6:2] Beta-1 exponent Beta-1 coefficient exponent, Bits[4:0]
[1:0]
Beta-0 linear
Beta-0 coefficient linear, Bits[16:15]
0x064A [7:0] Gamma-0 linear Gamma-0 coefficient linear, Bits[7:0]
0x064B [7:0] Gamma-0 coefficient linear, Bits[15:8]
0x064C [7:6] Unused
[5:1] Gamma-1 exponent Gamma-1 coefficient exponent, Bits[4:0]
[0] Gamma-0 linear Gamma-0 coefficient linear, Bit 16
0x064D [7:0] Delta-0 linear Delta-0 coefficient linear, Bits[7:0]
0x064E [7] Delta-1 exponent Delta-1 coefficient exponent, Bit 0
[6:0] Delta-0 linear Delta-0 coefficient linear, Bits[14:8]
0x064F [7:4] Alpha-3 exponent Alpha-3 coefficient exponent, Bits[3:0]
[3:0] Delta-1 exponent Delta-1 coefficient exponent, Bits[4:1]
1
The digital loop filter coefficients (α, β, γ, and δ) have the general form: x(2
y
), where x is the linear component and y is the exponential component of the coefficient.
The value of the linear component (x) constitutes a fraction, where 0 ≤ x < 1. The exponential component (y) is an integer. See the Calculating Digital Filter Coefficients
section for details.