參數(shù)資料
型號: AD9548/PCBZ
廠商: Analog Devices Inc
文件頁數(shù): 96/112頁
文件大?。?/td> 0K
描述: BOARD EVAL FOR AD9548
產(chǎn)品變化通告: AD9548 Mask Change 20/Oct/2010
設計資源: AD9548 Schematic
AD9548 BOM
AD9548 Eval Brd Layers
標準包裝: 1
主要目的: 計時,時鐘發(fā)生器
嵌入式:
已用 IC / 零件: AD9548
主要屬性: 62.5 ~ 450 MHz 輸出頻率
次要屬性: SPI 和 I2C 兼容控制端口
已供物品:
AD9548
Data Sheet
Rev. E | Page 84 of 112
Table 84. Digital Loop Filter Coefficients—Profile 01
Address
Bits
Bit Name
Description
0x0612
[7:0]
Alpha-0 linear
Alpha-0 coefficient linear, Bits[7:0]
0x0613
[7:0]
Alpha-0 coefficient linear, Bits[15:8]
0x0614
[7:6]
Alpha-2 exponent
Alpha-2 coefficient exponent, Bits[1:0]
[5:0]
Alpha-1 exponent
Alpha-1 coefficient exponent, Bits[5:0]
0x0615
[7:1]
Beta-0 linear
Beta-0 coefficient linear, Bits[6:0]
[0]
Alpha-2 exponent
Alpha-2 coefficient exponent, Bit 2
0x0616
[7:0]
Beta-0 linear
Beta-0 coefficient linear, Bits[14:7]
0x617
[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]
0x0618
[7:0]
Gamma-0 linear
Gamma-0 coefficient linear, Bits[7:0]
0x0619
[7:0]
Gamma -0 coefficient linear, Bits[15:8]
0x061A
[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
0x061B
[7:0]
Delta-0 linear
Delta-0 coefficient linear, Bits[7:0]
0x061C
[7]
Delta-1 exponent
Delta-1 coefficient exponent, Bit 0
[6:0]
Delta-0 linear
Delta-0 coefficient linear, Bits[14:8]
0x061D
[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(2y), 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.
Table 85. R-Divider—Profile 01
Address
Bits
Bit Name
Description
0x061E
[7:0]
R
R, Bits[7:0]
0x061F
[7:0]
R, Bits[15:8]
0x0620
[7:0]
R, Bits[23:16]
0x0621
[7:6]
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 86. S-Divider—Profile 01
Address
Bits
Bit Name
Description
0x0622
[7:0]
S
S, Bits[7:0]
0x0623
[7:0]
S, Bits[15:8]
0x0624
[7:0]
S, Bits[23:16]
0x0625
[7:6]
Unused
[5:0]
S
S, Bits[29:24]
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.
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