zl30407qcc Zarlink Semiconductor, zl30407qcc Datasheet - Page 29

• Manufacturer Part Number: zl30407qcc
• Description: Sonet/sdh Network Element Pll
• Manufacturer: Zarlink Semiconductor

Address: 11 H
Address: 13 H
Bit
7
6
5
4
3
2
1
0
5-3
2-1
Bit
7
6
0
C1.5dis
C16dis
Name
C8dis
C4dis
C2dis
C1.5POA2
C1.5POA0
RSV
RSV
RSV
Name
FCS2
RSV
RSV
RSV
to
Reserved
Reserved
16.384 MHz Clock Disable. When set high, this bit tristates the
16.384 MHz clock output.
8.192 MHz Clock Disable. When set high, this bit tristates the
8.192 MHz clock output.
4.096 MHz Clock Disable. When set high, this bit tristates the
4.096 MHz clock output.
2.048 MHz Clock Disable. When set high, this bit tristates the
2.048 MHz clock output.
1.544 MHz Clock Disable. When set high, this bit tristates the
1.544 MHz clock output.
Reserved
Reserved
Reserved
C1.5 Phase Offset Adjustment. These three bits allow for changing of
the phase offset of the C1.5o clock relative to the active input reference.
The phase offset is an unsigned number in a range from 0 to 7. Each
increment by one represents phase-offset advancement by 80.96 ns.
Example: Writing 010 advances C1.5 clock by 162 ns. Successive writing
of 001 delays this clock by 80.96 ns from its present position
Note that phase offset adjustment is a process of shifting clocks in a time
domain which may cause momentary distortion of the generated clocks.
Therefore it is not recommended to perform phase offset adjustments on
an active ZL30407 (at the time when it generates network clocks).
Reserved
Filter Characteristic Select 2 (see Table 6 on page 25 for
complimentary FCS bit description)
Conformance of these filter settings to standards is presented in Table 1,
“Loop Filter Selection” on page 13.
-
-
-
-
FCS2 = 0, FCS = 0 : Filter corner frequency set to 1.5 Hz
FCS2 = 0, FCS = 1 : Filter corner frequency set to 0.1 Hz
FCS2 = 1, FCS = 0 : Filter corner frequency set to 12 Hz
FCS2 = 1, FCS = 1 : Filter corner frequency set to 6 Hz
Table 13 - Clock Disable Register 1 (R/W)
Table 12 - Control Register 3 (R/W)
Zarlink Semiconductor Inc.
Functional Description
ZL30407
Functional Description
29
Data Sheet
Default
Default
000
0
0
0
0
0
0
0
0
00
0
0
0