參數(shù)資料
型號(hào): AD9548BCPZ
廠商: Analog Devices Inc
文件頁(yè)數(shù): 100/112頁(yè)
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
AD9548
Data Sheet
Rev. E | Page 88 of 112
Register 0x0680 to Register 0x06B1—Profile 2
Table 99. Priorities—Profile 2
Address
Bits
Bit Name
Description
0x0680
[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 2 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 2, which
ranks that reference relative to the others.
Table 100. Reference Period—Profile 2
Address
Bits
Bit Name
Description
0x0681
[7:0]
Reference period (in
femtoseconds)
Nominal reference period, Bits[7:0]
0x0682
[7:0]
Nominal reference period, Bits[15:8]
0x0683
[7:0]
Nominal reference period, Bits[23:16]
0x0684
[7:0]
Nominal reference period, Bits[31:24]
0x0685
[7:0]
Nominal reference period, Bits[39:32]
0x0686
[7:0]
Nominal reference period, Bits[47:40]
0x0687
[7:2]
Unused
[1:0]
Reference period
Nominal reference period, Bits[49:48]
Table 101. Tolerance—Profile 2
Address
Bits
Bit Name
Description
0x0688
[7:0]
Inner tolerance
Inner tolerance, Bits[7:0]
0x0689
[7:0]
Inner tolerance, Bits[15:8]
0x068A
[7:4]
Unused
[3:0]
Inner tolerance
Inner tolerance, Bits[19:16]
0x068B
[7:0]
Outer tolerance
Outer tolerance, Bits[7:0]
0x068C
[7:0]
Outer tolerance, Bits[15:8]
0x068D
[7:4]
Unused
[3:0]
Outer tolerance
Outer tolerance, Bits[19:16]
Table 102. Validation Timer—Profile 2
Address
Bits
Bit Name
Description
0x068E
[7:0]
Validation timer
(in milliseconds)
Validation timer, Bits[7:0]
0x068F
[7:0]
Validation timer, Bits[15:8]
Table 103. Redetect Timer—Profile 2
Address
Bits
Bit Name
Description
0x0690
[7:0]
Redetect timer
(in milliseconds)
Redetect timer, Bits[7:0]
0x0691
[7:0]
Redetect timer, Bits[15:8]
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