zl50021 Zarlink Semiconductor, zl50021 Datasheet - Page 77

• Manufacturer Part Number: zl50021
• Description: Enhanced 4 K Digital Switch With Stratum 3 Dpll
• Manufacturer: Zarlink Semiconductor

External Read/Write Address: 004B
Reset Value: 0000
1 - 0
Bit
15
0
14
0
FDM1 - 0
Name
H
13
Table 40 - Reference Change Control Register (RCCR) Bits (continued)
0
Force DPLL Timing Mode: These bits force the DPLL into one of the valid timing
modes.
In freerun mode, it is important that the DPLL is not also in fast lock mode (see the
BWCR register). Otherwise, the output frame pulses may not be generated correctly.
12
0
H
11
0
10
0
FDM1
0
0
1
1
9
0
Zarlink Semiconductor Inc.
ZL50021
FDM0
8
0
0
1
0
1
77
MTR
7
Description
PRS
DPLL TIMING MODE
6
1
Automatic
Holdover
Freerun
Normal
PRS
5
0
PMS
4
2
PMS
3
1
PMS
2
0
Data Sheet
FDM
1
1
FDM
0
0