Figure 6. T0 Selected Input Clock vs. DPLL Automatic Operating Mode Notes to Figu" />
參數資料
型號: IDT82V3255TFG8
廠商: IDT, Integrated Device Technology Inc
文件頁數: 55/132頁
文件大?。?/td> 0K
描述: IC PLL WAN SMC STRATUM 3 64-TQFP
標準包裝: 1,250
類型: 時鐘/頻率發(fā)生器,多路復用器
PLL:
主要目的: 以太網,SONET/SDH,Stratum
輸入: CMOS,LVDS,PECL
輸出: CMOS,LVDS,PECL
電路數: 1
比率 - 輸入:輸出: 3:3
差分 - 輸入:輸出: 是/是
頻率 - 最大: 622.08MHz
電源電壓: 3 V ~ 3.6 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 64-LQFP
供應商設備封裝: 64-TQFP(10x10)
包裝: 帶卷 (TR)
其它名稱: 82V3255TFG8
IDT82V3255
WAN PLL
Functional Description
29
December 3, 2008
Figure 6. T0 Selected Input Clock vs. DPLL Automatic Operating Mode
Notes to Figure 6:
1. Reset.
2. An input clock is selected.
3. The T0 selected input clock is disqualified AND No qualified input clock is available.
4. The T0 selected input clock is switched to another one.
5. The T0 selected input clock is locked (the T0_DPLL_LOCK bit is ‘1’).
6. The T0 selected input clock is disqualified AND No qualified input clock is available.
7. The T0 selected input clock is unlocked (the T0_DPLL_LOCK bit is ‘0’).
8. The T0 selected input clock is locked again (the T0_DPLL_LOCK bit is ‘1’).
9. The T0 selected input clock is switched to another one.
10. The T0 selected input clock is locked (the T0_DPLL_LOCK bit is ‘1’).
11. The T0 selected input clock is disqualified AND No qualified input clock is available.
12. The T0 selected input clock is switched to another one.
13. The T0 selected input clock is disqualified AND No qualified input clock is available.
14. An input clock is selected.
15. The T0 selected input clock is switched to another one.
Free-Run mode
1
Pre-Locked
mode
2
3
4
Locked
mode
5
Lost-Phase
mode
Holdover
mode
7
8
Pre-Locked2
mode
13
14
15
6
12
11
9
10
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