參數(shù)資料
型號: AD9548BCPZ
廠商: Analog Devices Inc
文件頁數(shù): 104/112頁
文件大?。?/td> 0K
描述: IC CLOCK GEN/SYNCHRONIZR 88LFCSP
產(chǎn)品變化通告: AD9548 Mask Change 20/Oct/2010
標(biāo)準(zhǔn)包裝: 1
類型: 時(shí)鐘/頻率發(fā)生器,同步器
PLL:
主要目的: 以太網(wǎng),SONET/SDH,Stratum
輸入: CMOS,LVDS,LVPECL
輸出: CMOS,LVDS,LVPECL
電路數(shù): 1
比率 - 輸入:輸出: 1:1
差分 - 輸入:輸出: 是/是
頻率 - 最大: 750kHz
電源電壓: 1.71 V ~ 3.465 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 88-VFQFN 裸露焊盤,CSP
供應(yīng)商設(shè)備封裝: 88-LFCSP-VQ(12x12)
包裝: 托盤
Data Sheet
AD9548
Rev. E | Page 91 of 112
Table 113. Redetect Timer—Profile 3
Address
Bits
Bit Name
Description
0x06C2
[7:0]
Redetect timer
(in milliseconds)
Redetect timer, Bits[7:0]
0x06C3
[7:0]
Redetect timer, Bits[15:8]
Table 114. Digital Loop Filter Coefficients—Profile 31
Address
Bits
Bit Name
Description
0x06C4
[7:0]
Alpha-0 linear
Alpha-0 coefficient linear, Bits[7:0]
0x06C5
[7:0]
Alpha-0 coefficient linear, Bits[15:8]
0x06C6
[7:6]
Alpha-2 exponent
Alpha-2 coefficient exponent, Bits[1:0]
[5:0]
Alpha-1 exponent
Alpha-1 coefficient exponent, Bits[5:0]
0x06C7
[7:1]
Beta-0 linear
Beta-0 coefficient linear, Bits[6:0]
[0]
Alpha-2 exponent
Alpha-2 coefficient exponent, Bit 2
0x06C8
[7:0]
Beta-0 linear
Beta-0 coefficient linear, Bits[14:7]
0x06C9
[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]
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
[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(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 115. R Divider—Profile 31
Address
Bits
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
[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 31
Address
Bits
Bit Name
Description
0x06D4
[7:0]
S
S, Bits[7:0]
0x06D5
[7:0]
S, Bits[15:8]
0x06D6
[7:0]
S, Bits[23:16]
0x06D7
[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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