zl30462 Zarlink Semiconductor, zl30462 Datasheet - Page 14

• Manufacturer Part Number: zl30462
• Description: Vibratto-s Dvd Processor Product Brief
• Manufacturer: Zarlink Semiconductor

Two types of transitions are possible:
•
•
In both cases, the change of references provides “hitless” switching.
2.2
Figure 10 shows the recommended power supply decoupling requirements of the ZL30462. The ZL30462 does
have a level of internal decoupling components built in to the module, but to ensure optimum performance these
external components are required.
Semi-automatic transition, which involves changing the RSEL input to select the other reference clock,
without changing the mode select inputs MS2, MS1 = 00 (Normal mode). This forces ZL30462 to
momentarily transition through the Holdover state and automatically return to Normal state after
synchronizing to the other reference clock.
Manual transition, which involves switching into Holdover mode (MS2, MS1 = 01), changing references with
RSEL, and manual return to the Normal mode (MS2, MS1 = 00).
Power Supply Decoupling
3.3V
C1
C4
L1
L2
C2
C5
Figure 10 - Power Supply Decoupling
Zarlink Semiconductor Inc.
C3
C6
C7
C8
C9
ZL30462
TVdd
TGnd
Vdd
AGnd1
Vdd1
AGnd1
Vdd2
AGnd1
Vdd3
AGnd2
13
ZL30462
L1 & L2 : 10µH
C2 & C5 : 10µF
C1, C3, C4, C6 - C9 : 100nF
Data Sheet