IDT82V3280 Integrated Device Technology, IDT82V3280 Datasheet - Page 32

• Manufacturer Part Number: IDT82V3280
• Description: Wan Pll
• Manufacturer: Integrated Device Technology

Functional Description
IDT82V3280
Notes to
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.
Figure
7:
Figure 7. T0 Selected Input Clock vs. DPLL Automatic Operating Mode
15
Pre-Locked2
mode
4
10
Pre-Locked
mode
9
12
1
3
5
8
Lost-Phase
32
Locked
mode
mode
Free-Run mode
2
7
13
11
6
14
Holdover
mode
June 19, 2006
WAN PLL