IDT82V32021 Datasheet, PDF (75/108 Pages) Integrated Device Technology – EBU WAN PLL

IDT82V32021
EBU WAN PLL
6.2.6 T0 DPLL STATE MACHINE CONTROL REGISTERS
OPERATING_STS - DPLL Operating Status
Address: 52H
Type: Read
Default Value: 1X0X0001
7
6
5
4
EX_SYNC_ALA
RM_MON
-
T0_DPLL_SOFT
_FREQ_ALARM
-
3
2
1
0
T0_DPLL_LO T0_DPLL_OPER T0_DPLL_OPER T0_DPLL_OPER
CK
ATING_MODE2 ATING_MODE1 ATING_MODE0
Bit
Name
Description
This bit indicates whether the selected frame sync input signal is in external sync alarm status.
7
EX_SYNC_ALARM_MON 0: No external sync alarm.
1: In external sync alarm status. (default)
6
-
Reserved.
This bit indicates whether the T0 DPLL is in soft alarm status.
5
T0_DPLL_SOFT_FREQ_ALARM 0: No T0 DPLL soft alarm. (default)
1: In T0 DPLL soft alarm status.
4
-
Reserved.
This bit indicates the T0 DPLL locking status.
3
T0_DPLL_LOCK
0: Unlocked. (default)
1: Locked.
These bits indicate the current operating mode of T0 DPLL.
000: Reserved.
001: Free-Run. (default)
010: Holdover.
2 - 0 T0_DPLL_OPERATING_MODE[2:0] 011: Reserved.
100: Locked.
101: Pre-Locked2.
110: Pre-Locked.
111: Lost-Phase.
Programming Information
75
July 23, 2009