Datasheet

Data Sheet AD9547
Rev. E | Page 87 of 104
Address
Bit
Bit Name
Description
0x06C8
[7:0]
Beta-0 linear
Beta-0 coefficient linear, Bits[14:7].
0x06C9
7
Unused
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].
0x06CA [7:0] Gamma-0 linear Gamma-0 coefficient linear, Bits[7:0].
0x06CB
[7:0]
Gamma-0 coefficient linear, Bits[15:8].
0x06CC [7:6] Unused Unused.
[5:1]
Gamma-1 exponent
Gamma-1 coefficient exponent, Bits[4:0].
0 Gamma-0 linear Gamma-0 coefficient linear, Bit 16.
0x06CD
[7:0]
Delta-0 linear
Delta-0 coefficient linear, Bits[7:0].
0x06CE 7 Delta-1 exponent Delta-1 coefficient exponent, Bit 0.
[6:0] Delta-0 linear Delta-0 coefficient linear, Bits[14:8].
0x06CF
[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 the Digital Filter
Coefficients section for details).
Register 0x06D0 to Register 0x06DA—Profile 3 Frequency Multiplication
Table 115. R Divider—Profile 3
1
Address Bit Bit Name Description
0x06D0
[7:0]
R
R, Bits[7:0].
0x06D1 [7:0] R, Bits[15:8].
0x06D2
[7:0]
R, Bits[23:16].
0x06D3
[7:6]
Unused
Unused.
[5:0] R R, Bits[29:24].
1
The value stored in the R divider register yields an actual divide ratio of one more than the programmed value.
Table 116. S Divider—Profile 3
1
Address
Bit
Bit Name
Description
0x06D4 [7:0] S S, Bits[7:0].
0x06D5
[7:0]
S
S, Bits[15:8].
0x06D6
[7:4]
Unused
Unused.
[3:0]
S
S, Bits[19:16].
0x06D7 [7:0] Unused Unused.
1
The value stored in the S divider register yields an actual divide ratio of one more than the programmed value. Furthermore, the value of S must be at least 7.
Table 117. Fractional Feedback Divider—Profile 3
Address
Bit
Bit Name
Description
0x06D8 [7:0] V V, Bits[7:0].
0x06D9
[7:4]
U
U, Bits[3:0].
[3:2] Unused Unused.
[1:0]
V
V, Bits[9:8].
0x06DA
[7:6]
Unused
Unused.
[5:0]
U
U, Bits[9:4].