ZL50022
Data Sheet
External Read Only Address: 0066H
15
0
14
0
13
0
12
0
11
0
10
0
9
0
8
0
7
0
6
0
5
0
4
0
3
2
1
0
0
LCI
RCI
HOI
Bit
Name
Description
15 - 4
Unused
Reserved
In normal functional mode, these bits is zero.
3
2
1
LCI
RCI
HOI
Lock Change Interrupt Bit
If the device sets this bit to high, the device lock status has changed.
Reference Change Interrupt Bit
If the device sets this bit to high, the selected reference has changed.
Holdover Interrupt Bit
If the device sets this bit to high, the device has entered or recovered from the
holdover/MTIE mode.
0
Unused
Reserved
In normal functional mode, this bit is zero.
Note 1: If any of these bits are set, the interrupt output will become active unless the Interrupt Mask Register (IMR) has a high
value for that particular bit.
Note 2: Any of these bits can be cleared by setting the appropriate bit in the Interrupt Clear Register.
Table 38 - Interrupt Register (IR) Bits - Read Only
External Read/Write Address: 0067H
Reset Value: 000FH
15
0
14
0
13
0
12
0
11
0
10
0
9
0
8
0
7
0
6
0
5
0
4
0
3
2
1
0
1
LIM
RIM
HIM
Bit
Name
Description
15 - 4
Unused Reserved
In normal functional mode, these bits MUST be set to zero.
3
2
1
LIM
RIM
HIM
Lock Interrupt Mask Bit
When this bit is high, it masks the lock status change interrupt.
Reference Change Interrupt Mask Bit
When this bit is high, it masks the reference change interrupt.
Holdover Interrupt Mask Bit
When this bit is high, it masks the holdover entry/exit interrupt.
Table 39 - Interrupt Mask Register (IMR) Bits
72
Zarlink Semiconductor Inc.
ZARLINK [ ZARLINK SEMICONDUCTOR INC ]
