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參數(shù)資料
| 型號(hào)： | ZL50015QCC |
| 廠商： | ZARLINK SEMICONDUCTOR INC |
| 元件分類： | 路由/交換 |
| 英文描述： | Enhanced 1 K Digital Switch with Stratum 4E DPLL |
| 中文描述： | TELECOM, DIGITAL TIME SWITCH, PQFP256 |
| 封裝： | 28 X 28 MM, 1.40 MM HEIGHT, MS-026BJC, LQFP-256 |
| 文件頁(yè)數(shù)： | 42/122頁(yè) |
| 文件大小： | 926K |
| 代理商： | ZL50015QCC |
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ZL50015
Data Sheet
42
Zarlink Semiconductor Inc.
With a preferred reference, if more than two references are required, or the two references are not in consecutive
order, or the roles of the two references need to be interchanged, then external software is required to manually
control the reference switching of the DPLL (by monitoring the reference failure status and reprogramming the
device accordingly).
12.1.4 Freerun Mode
In freerun mode, the DPLL generates a fixed output frequency based on the crystal oscillator frequency. To meet
Stratum 4E, the accuracy of the circuitry for the freerunning output clock must be 32 ppm or better.
12.1.5 DPLL Internal Reset Mode
DPLL_IRM (bit 0) in the DPLL Control Register (DPLLCR) enables the internal reset mode. In the internal reset
mode, the DPLL module is disabled to save power. The circuit will be reset continuously and no output clocks will
be generated. When the internal DPLL module is in the internal reset mode, all registers remain accessible. Note
that applying the DPLL reset does not reset the DPLL registers: they preserve the values that they had prior to
entering reset.
13.0 DPLL Frequency Behaviour
13.1 Input Frequencies
The DPLL is capable of synchronizing to one of the following input frequencies:
13.2 Input Frequencies Selection
The input frequencies of REF 0 - 3 can be automatically detected or programmed independently by the Reference
Frequency Register (RFR) if RFRE (bit 1) in the DPLL Control Register (DPLLCR) is set. The detected frequency of
the selected reference is indicated in the Reference Change Status Register (RCSR). In addition, the detected
frequencies of all four references are indicated in the Reference Frequency Status Register (RFSR). See Table 26
on page 63, Table 27 on page 64, Table 35 on page 71 and Table 41 on page 77 for the detailed bit description of
the DPLL Control Register (DPLLCR), Reference Frequency Register (RFR), Reference Change Status Register
(RCSR) and Reference Frequency Status Register (RFSR), respectively.
8 kHz
1.544 MHz (DS1)
2.048 MHz (E1)
4.096 MHz
8.192 MHz
16.384 MHz
19.44 MHz
Table 9 - DPLL Input Reference Frequencies
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ZL50015QCC1 | Enhanced 1 K Digital Switch with Stratum 4E DPLL |
| ZL50018 | 2 K Digital Switch with Enhanced Stratum 3 DPLL |
| ZL50018GAC | 2 K Digital Switch with Enhanced Stratum 3 DPLL |
| ZL50018QCC | 2 K Digital Switch with Enhanced Stratum 3 DPLL |
| ZL50019 | Enhanced 2 K Digital Switch with Stratum 4E DPLL |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ZL50015QCC1 | 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:Enhanced 1 K Digital Switch with Stratum 4E DPLL |
| ZL50015QCG1 | 制造商:Microsemi Corporation 功能描述: 制造商:Microsemi Corporation 功能描述:PB FREE 1K+RATE CONVERSION AND S4E DPLL 制造商:Microsemi Corporation 功能描述:PB FREE 1K+RATE CONVERSION AND S4E DPLL - Trays 制造商:MICROSEMI CONSUMER MEDICAL PRODUCT GROUP 功能描述:IC TDM SWITCH 1K-CH ENH 256LQFP 制造商:Microsemi Corporation 功能描述:IC TDM SWITCH 1K-CH ENH 256LQFP |
| ZL50016 | 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:Enhanced 1 K Digital Switch |
| ZL50016_06 | 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:Enhanced 1 K Digital Switch |
| ZL50016GAC | 制造商:Microsemi Corporation 功能描述:SWIT FABRIC 1K X 1K 1.8V/3.3V 256BGA - Trays 制造商:MICROSEMI CONSUMER MEDICAL PRODUCT GROUP 功能描述:IC TDM SWITCH 1K-CH ENH 256PBGA 制造商:Microsemi Corporation 功能描述:IC TDM SWITCH 1K-CH ENH 256PBGA |
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