參數(shù)資料
型號(hào)： XRT8001ID
廠商： EXAR CORP
元件分類： 時(shí)鐘及定時(shí)
英文描述： WAN Clock for T1 and E1 Systems
中文描述： 8001 SERIES, PLL BASED CLOCK DRIVER, 2 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO18
封裝： 0.300 INCH, SOIC-18
文件頁數(shù)： 45/48頁
文件大?。?/td> 1054K
代理商： XRT8001ID
XRT8001
45
Rev. 1.01
3) Both the XRT8001 and XRT8000 can be configured
to accept “Fractional T1/E1” rate clock signals (e.g., K
x 64kHz) and synthesize either a 1.544MHz or
2.048MHz clock signal.
However, the XRT8001 can also synthesize “Frac-
tional T1/E1” rate clock signals, when provided with
either a 1.544MHz or 2.048MHz clock signal
LOCKDET Pin Function
LOCK Condition of both PLL1 AND PLL2
Description of LOCKDET pin’s role
The LOCKDET output pin toggles “HIGH” only if both (of if the only
enabled) PLLs are “In-LOCK”.
The LOCKDET output pin will toggle “LOW” if any one of the PLLs
are out of LOCK.
NOTE:
In this case, the LOCKDET output of the XRT8001
behaves identical to that of the XRT8000.
The LOCKDET output pin toggles “HIGH” only if PLL1 is in the “In-
LOCK” condition.
The LOCKDET output pin toggles “HIGH” only if PLL2 is in the “In-
LOCK” condition.
The LOCKDET output pin is pulled “LOW” regardless of the “Lock”
condition of the two PLLs.
LOCK Condition of PLL1 Only
LOCK Condition of PLL2 Only
Forced to “LOW”
NOTE:
The XRT8000 has an additional divide by 8 block which is not included in the XRT8001.
Table 15: Selectable Functions of the LOCKDET Output Pin in the XRT8001
4) The XRT8001 permits the user to determine the
exact role of the LOCKDET output pin. The on-chip
Command Register (within the XRT8001) permits the
user to configure the LOCKDET output pin to have the
functions listed below.
In the XRT8000, the LOCKDET output pin is pulled
HIGH only when both XRT8000 PLLs are “in-lock”.
相關(guān)PDF資料
PDF描述
XRT8001IP WAN Clock for T1 and E1 Systems
XRT8010 312MHZ CLOCK & CRYSTAL MULTIPLIER WITH LVDS OUTPUTS
XRT8010IL 312MHZ CLOCK & CRYSTAL MULTIPLIER WITH LVDS OUTPUTS
XRT8020 650 MHZ CLOCK & CRYSTAL MULTIPLIER WITH LVDS OUTPUTS
XRT8020IL 650 MHZ CLOCK & CRYSTAL MULTIPLIER WITH LVDS OUTPUTS
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XRT8001ID-F 功能描述:鎖相環(huán) - PLL 3.3V-5V temp -45 to 85C RoHS:否 制造商:Silicon Labs 類型:PLL Clock Multiplier 電路數(shù)量:1 最大輸入頻率:710 MHz 最小輸入頻率:0.002 MHz 輸出頻率范圍:0.002 MHz to 808 MHz 電源電壓-最大:3.63 V 電源電壓-最小:1.71 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:QFN-36 封裝:Tray
XRT8001ID-F 制造商:Exar Corporation 功能描述:WAN Clock IC
XRT8001IDTR-F 功能描述:鎖相環(huán) - PLL RoHS:否 制造商:Silicon Labs 類型:PLL Clock Multiplier 電路數(shù)量:1 最大輸入頻率:710 MHz 最小輸入頻率:0.002 MHz 輸出頻率范圍:0.002 MHz to 808 MHz 電源電壓-最大:3.63 V 電源電壓-最小:1.71 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:QFN-36 封裝:Tray
XRT8001IP 制造商:EXAR 制造商全稱:EXAR 功能描述:WAN Clock for T1 and E1 Systems
XRT8001IP-F 功能描述:鎖相環(huán) - PLL RoHS:否 制造商:Silicon Labs 類型:PLL Clock Multiplier 電路數(shù)量:1 最大輸入頻率:710 MHz 最小輸入頻率:0.002 MHz 輸出頻率范圍:0.002 MHz to 808 MHz 電源電壓-最大:3.63 V 電源電壓-最小:1.71 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:QFN-36 封裝:Tray
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