zl30407qcc Zarlink Semiconductor, zl30407qcc Datasheet - Page 28

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

Address: 06 H
Address: 07 H
Address: 0F H
2 - 0
7-4
Bit
7-0
Bit
7-4
3-0
3
Bit
C16POA10
C16POA7
C16POA0
C16POA8
Name
ID7 - 4
ID3 - 0
Name
Name
OffEn
RSV
to
to
Device Identification Number. These four bits represent the device part number.
The ID number for ZL30407 is 0111.
Device Revision Number. These bits represent the revision number. Number
starts from 0000.
C16 Phase Offset Adjustment. The eight least significant bits of the
phase offset adjustment word. See the Phase Offset Register 2 for
details.
Reserved
Offset Enable. Set high to enable programmable phase offset
adjustment (C16 Phase Offset Adjustment and C1.5 Phase Offset
Adjustment) between the input reference and the generated clocks.
C16 Phase Offset Adjustment. These three bits (most significant) in
conjunction with the eight bits of Phase Offset Register 1 allow for
phase shifting of all clocks and frame pulses that are derived from the
C16 clock (C8o, C4o, C2o, F16o, F8o, F0o). The phase offset is an
unsigned number in a range from 0 to 2047. Each increment by one
represents a phase-offset advancement by 61.035 ns with respect to
the input reference signal. The phase offset is a two-byte value and it
must be written in one step increments. For example: four writes are
required to advance clocks by 244 ns from its current position of 22H:
write 23H, 24H, 25H, 26H. Writing numbers in reverse order will delay
clocks from their 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).
Table 10 - Phase Offset Register 1 (R/W)
Table 9 - Phase Offset Register 2 (R/W)
Table 11 - Device ID Register (R)
Zarlink Semiconductor Inc.
ZL30407
Functional Description
Functional Description
28
Functional Description
Data Sheet
Default
Default
0000
0000
0000
000
0