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 sy" />
參數(shù)資料
型號: XRT8001ID-F
廠商: Exar Corporation
文件頁數(shù): 40/48頁
文件大小: 0K
描述: IC WAN T1/E1 DUAL 18SOIC
標(biāo)準(zhǔn)包裝: 20
類型: 時鐘/頻率發(fā)生器
PLL:
主要目的: 以太網(wǎng)(WAN),T1/E1
輸入: 時鐘
輸出: 時鐘
電路數(shù): 1
比率 - 輸入:輸出: 1:2
差分 - 輸入:輸出: 無/無
頻率 - 最大: 16.384kHz
電源電壓: 3.3 V ~ 5 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 18-SOIC(0.295",7.50mm 寬)
供應(yīng)商設(shè)備封裝: 18-SOIC
包裝: 管件
其它名稱: 1016-1358-5
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
Description of LOCKDET pin’s role
LOCK Condition of both PLL1 AND PLL2
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.
LOCK Condition of PLL1 Only
The LOCKDET output pin toggles “HIGH” only if PLL1 is in the “In-
LOCK” condition.
LOCK Condition of PLL2 Only
The LOCKDET output pin toggles “HIGH” only if PLL2 is in the “In-
LOCK” condition.
Forced to “LOW”
The LOCKDET output pin is pulled “LOW” regardless of the “Lock”
condition of the two PLLs.
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
XRT8000ID-F IC WAN CLOCK E1/E1 DUAL 18SOIC
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XRT8001ID-F 制造商:Exar Corporation 功能描述:WAN Clock IC
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