IDT82V3380A Integrated Device Technology, IDT82V3380A Datasheet - Page 32

• Manufacturer Part Number: IDT82V3380A
• Description: Synchronous Ethernet Idt Wan Plltm Idt82v3380a
• Manufacturer: Integrated Device Technology

Functional Description
IDT82V3380A
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
SYNCHRONOUS ETHERNET WAN PLL™
14
Holdover
mode
September 30, 2010