zl30102 Zarlink Semiconductor, zl30102 Datasheet - Page 38

• Manufacturer Part Number: zl30102
• Description: T1/e1 Stratum 4/4e Redundant System Clock Synchronizer For Ds1/e1 And H.110
• Manufacturer: Zarlink Semiconductor

AC Electrical Characteristics* - Input timing for REF2_SYNC (see Figure 25).
* Supply voltage and operating temperature are as per Recommended Operating Conditions.
* See Figure 17, “Examples of REF2 & REF2_SYNC to Output Alignment” on page 27 for further explanation.
output clock with the
same frequency as
REF
Note:
REF2 can be 1.544 MHz, 2.048 MHz, 8.192 MHz or 16.384 MHz.
REF2_SYNC is 8 kHz.
1
2
3
REF2
REF2_SYNC
REF0/1/2
F8_32o
REF2_SYNC lead time
REF2_SYNC lag time
REF2_SYNC pulse width high or low
Characteristics
Figure 24 - REF0/1/2 Input Timing and Input to Output Timing
t
REFW
Figure 25 - REF2_SYNC Timing
Zarlink Semiconductor Inc.
t
t
t
Symbol
SYNC_LD
SYNC_LG
ZL30102
SYNC_W
t
t
REF<xx>P
SYNC_LD
38
t
REF8kD
Min.
t
REFW
15
t
REFP
, t
REF<xx>_F8D
t
SYNC_LG
t
t
REF<xx>D
REFP
edge used for alignment
Max.
12
- 28
t
SYNC_W
Units
ns
ns
ns
period of REF2 clock
t
REFP
Notes
Data Sheet
= minimum