zl50022 Zarlink Semiconductor, zl50022 Datasheet - Page 69
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zl50022
Manufacturer Part Number
zl50022
Description
Enhanced 4 K Digital Switch With Stratum 4e Dpll
Manufacturer
Zarlink Semiconductor
Datasheet
1.ZL50022.pdf
(121 pages)
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External Read/Write Address: 004B
Reset Value: 0000
15 - 8
6 - 5
4 - 2
Bit
15
7
0
14
0
PMS2 - 0
PRS1 - 0
Unused
Name
MTR
H
13
0
Reserved
In normal functional mode, these bits MUST be set to zero.
MTIE Reset
When this bit is low, the MTIE circuit applies a phase offset between the reference input
clock and the DPLL output clock and the phase offset value is maintained. When this bit
is high, MTIE circuit is in its reset state and the phase offset value is reset to zero,
causing alignment of the DPLL output clocks to nearest edge of the selected input
reference.
Preferred Reference Selection Bits
These bits select the preferred reference from one of the input references.
only if the PMS2-0 bits are set to 001. Otherwise, these bits are ignored.
Preference Mode Selection Bits
These bits select one of the preference modes:
If in automatic mode with a preferred reference (PMS2-0 = 001 and FDM1-0 = 00), the
automatic state machine will only switch between two references (as per Table 8). Please
see Section12.1.3.2, “Automatic Reference Switching With Preferences“ on page 41 for
more details.
12
Table 36 - Reference Change Control Register (RCCR) Bits
0
H
11
0
PMS2
10
0
0
0
0
1
1
0
PRS1
0
0
1
1
110 - 111
9
0
Zarlink Semiconductor Inc.
PMS1
0
0
1
1
0
0
ZL50022
PRS0
8
0
0
1
0
1
69
PMS0
MTR
7
0
1
0
1
0
1
Description
Preferred Reference Selection
PRS
6
1
Preference as per the setting
of the PRS1 - 0 bits
PRS
Preference Mode
5
0
REF0
REF1
REF2
REF3
No Preference
Force REF0
Force REF1
Force REF2
Force REF3
Reserved
PMS
4
2
PMS
3
1
PMS
2
0
T
hey are used
Data Sheet
FDM
1
1
FDM
0
0
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