參數(shù)資料
型號(hào)： ZL30106QDG
廠商： ZARLINK SEMICONDUCTOR INC
元件分類： 數(shù)字傳輸電路
英文描述： SONET/SDH/PDH Network Interface DPLL
中文描述： ATM/SONET/SDH SUPPORT CIRCUIT, PQFP64
封裝： 10 X 10 MM, 1.0 MM HEIGHT, MS-026ACD, TQFP-64
文件頁(yè)數(shù)： 13/48頁(yè)
文件大?。?/td> 423K
代理商： ZL30106QDG
ZL30106
Data Sheet
13
Zarlink Semiconductor Inc.
Figure 3 - Reference Monitor Circuit
Exceeding the thresholds of any of the monitors forces the corresponding REF_FAIL pin to go high. The single
cycle and coarse frequency failure flags force the DPLL into Holdover mode and feed a timer that disqualifies the
reference input signal when the failures are present for more than 50 ms. The single cycle and coarse frequency
failures must be absent for 200 ms to let the timer re-qualify the input reference signal as valid. Multiple failures of
less than 50 ms each have an accumulative effect and will disqualify the reference eventually. This is illustrated in
Figure 4 where REF0 experiences disruptions while REF1 is stable.
Figure 4 - Behaviour of the Dis/Re-qualify Timer
Reference Frequency
Detector
Single Cycle
Monitor
Precise Frequency
Monitor
Coarse Frequency
Monitor
dis/re-qualify
timer
REF0 /
REF1 /
REF2
OR
OR
OR
REF_OOR = reference out of range.
REF_DIS= reference disrupted.
Both are internal signals.
Reference
select
state machine
REF_SEL1:0
REF_OOR
Mode select
state machine
HOLDOVER
REF_DIS
REF_FAIL0 /
REF_FAIL1 /
REF_FAIL2
50 ms
200 ms
REF0
dis/requalify
timer on REF0
SCM or CFM failure
REF_FAIL0
HOLDOVER
REF_OOR0
(internal signal)
REF1
REF0
REF1
REF0
REF_SEL
SCM or CFM failure
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ZL30107 GbE Line Card Synchronizer
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ZL30106QDG1 制造商:Zarlink Semiconductor Inc 功能描述:SONET/SDH/PDH NETWORK INTRFC 64TQFP - Trays 制造商:Zarlink Semiconductor Inc 功能描述:PB FREE SONET/SDH/PDH NTWK INTERFACEDPLL
ZL30107 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:GbE Line Card Synchronizer
ZL30107GGG 制造商:Microsemi Corporation 功能描述: 制造商:MICROSEMI CONSUMER MEDICAL PRODUCT GROUP 功能描述:IC SYNCHRONIZER ETH SGL 64CABGA 制造商:Microsemi Corporation 功能描述:IC SYNCHRONIZER ETH SGL 64CABGA
ZL30107GGG2 制造商:Microsemi Corporation 功能描述:GBE LINE CARD SYNCHRONIZER 64CABGA - Trays 制造商:MICROSEMI CONSUMER MEDICAL PRODUCT GROUP 功能描述:IC SYNCHRONIZER ETH SGL 64CABGA 制造商:Microsemi Corporation 功能描述:IC SYNCHRONIZER ETH SGL 64CABGA
ZL30108 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:Network Interface DPLL
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