參數(shù)資料
型號: AD9548BCPZ-REEL7
廠商: Analog Devices Inc
文件頁數(shù): 95/112頁
文件大小: 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: 400
類型: 時鐘/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: 帶卷 (TR)
Data Sheet
AD9548
Rev. E | Page 83 of 112
Table 78. Phase Build-Out Switching
Address
Bits
Bit Name
Description
0x0507
[7:3]
Unused
[2:0]
Phase master
threshold priority
Threshold priority level (a value of 0 to 7, with 0 (default) being the highest priority
level). References with a selection priority value lower than this value are treated as
section for the selection priority value).
PROFILE REGISTERS (REGISTER 0x0600 TO REGISTER 0x07FF)
Note that the default value of every bit is 0 for Profile 0 to Profile 7.
Register 0x0600 to Register 0x0631—Profile 0
Table 79. Priorities—Profile 0
Address
Bits
Bit Name
Description
0x0600
[7]
Phase lock scale
Controls the phase lock threshold unit scaling.
0 = picoseconds.
1 = nanoseconds.
[6]
Unused
[5:3]
Promoted priority
User assigned priority level (0 to 7) of the reference associated with Profile 0 while
that reference is the active reference. The numeric value of the promoted priority
must be less than or equal to the numeric value of the selection priority.
[2:0]
Selection priority
User assigned priority level (0 to 7) of the reference associated with Profile 0, which
ranks that reference relative to the others.
Table 80. Reference Period—Profile 0
Address
Bits
Bit Name
Description
0x0601
[7:0]
Reference period (in
femtoseconds)
Nominal reference period, Bits[7:0]
0x0602
[7:0]
Nominal reference period, Bits[15:8]
0x0603
[7:0]
Nominal reference period, Bits[23:16]
0x0604
[7:0]
Nominal reference period, Bits[31:24]
0x0605
[7:0]
Nominal reference period, Bits[39:32]
0x0606
[7:0]
Nominal reference period, Bits[47:40]
0x0607
[7:2]
Unused
[1:0]
Reference period
Nominal reference period, Bits[49:48]
Table 81. Tolerance—Profile 0
Address
Bits
Bit Name
Description
0x0608
[7:0]
Inner tolerance
Inner tolerance, Bits[7:0]
0x0609
[7:0]
Inner tolerance, Bits[15:8]
0x060A
[7:4]
Unused
[3:0]
Inner tolerance
Inner tolerance, Bits[19:16]
0x060B
[7:0]
Outer tolerance
Outer tolerance, Bits[7:0]
0x060C
[7:0]
Outer tolerance, Bits[5:8]
0x060D
[7:4]
Unused
[3:0]
Outer tolerance
Outer tolerance, Bits[19:16]
Table 82. Validation Timer—Profile 0
Address
Bits
Bit Name
Description
0x 060E
[7:0]
Validation timer
(in milliseconds)
Validation timer, Bits[7:0]
0x 060F
[7:0]
Validation timer, Bits[15:8]
Table 83. Redetect Timer—Profile 0
Address
Bits
Bit Name
Description
0x0610
[7:0]
Redetect timer
(in milliseconds)
Redetect timer, Bits[7:0]
0x0611
[7:0]
Redetect timer, Bits[15:8]
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