Si5347-D-EVB datasheet(11/55 Pages) SILABS

Numer części	Si5347-D-EVB

Szczegółowy opis	Dual/Quad DSPLL Any-Frequency, Any-Output Jitter Attenuators

Download	55 Pages

Scroll/Zoom	100%

Producent	SILABS [Silicon Laboratories]

Strona internetowa	http://www.silabs.com

Logo

11 / 55 page

3.7 Fault Monitoring

All four input clocks (IN0, IN1, IN2, IN3) are monitored for LOS and OOF, as shown in the figure below. The reference at the XA/XB

pins is also monitored for LOS since it provides a critical reference clock for the DSPLLs. Each of the DSPLLs also has an LOL indica-

tor, which is asserted when synchronization is lost with their selected input clock.

Si5347

IN3

IN3b

XB

XA

OSC

LOS

DSPLL A

PD

LPF

÷M

LOL

DSPLL B

PD

LPF

÷M

LOL

DSPLL C

PD

LPF

÷M

LOL

DSPLL D

PD

LPF

÷M

LOL

IN1

IN1b

IN2

IN2b

IN0

IN0b

Precision

Fast

OOF

LOS

Precision

Fast

OOF

LOS

Precision

Fast

OOF

LOS

Precision

Fast

OOF

LOS

÷

P0n

P0d

÷

P1n

P1d

÷

P2n

P2d

÷

P3n

P3d

Figure 3.7. Si5347 Fault Monitors

3.7.1 Input LOS Detection

The loss of signal monitor measures the period of each input clock cycle to detect phase irregularities or missing clock edges. Each of

the input LOS circuits has its own programmable sensitivity which allows ignoring missing edges or intermittent errors. Loss of signal

sensitivity is configurable using the ClockBuilder Pro utility. The LOS status for each of the monitors is accessible by reading a status

register. The live LOS register always displays the current LOS state and a sticky register always stays asserted until cleared. An option

to disable any of the LOS monitors is also available.

LOS

en

Monitor

LOS

Sticky

Live

Figure 3.8. LOS Status Indicators

3.7.2 XA/XB LOS Detection

A LOS monitor is available to ensure that the external crystal or reference clock is valid. By default the output clocks are disabled when

XAXB_LOS is detected. This feature can be disabled such that the device will continue to produce output clocks when XAXB_LOS is

detected.

Si5347/46 Rev D Data Sheet

Functional Description

silabs.com | Smart. Connected. Energy-friendly.

Rev. 1.0 | 10

Podobny numer części - Si5347-D-EVB

Producent	Numer części	Arkusz danych	Szczegółowy opis
Skyworks Solutions Inc.	SI5347-D-EVB	879Kb / 56P	Dual/Quad DSPLL™ Any-Frequency, Any-Output Jitter Attenuators Rev. 1.1

More results

Podobny opis - Si5347-D-EVB

Producent	Numer części	Arkusz danych	Szczegółowy opis
Silicon Laboratories	SI5347	2Mb / 59P	DUAL/QUAD DSPLL ANY-FREQUENCY, ANY-OUTPUT JITTER ATTENUATORS
Skyworks Solutions Inc.	SI5347	879Kb / 56P	Dual/Quad DSPLL™ Any-Frequency, Any-Output Jitter Attenuators Rev. 1.1
Skyworks Solutions Inc.	SI5397	1Mb / 60P	Dual/Quad DSPLL™ Any-Frequency, Any-Output Jitter Attenuators Rev. 1.2
Silicon Laboratories	SI5341	2Mb / 56P	LOW-JITTER, 10-OUTPUT, ANY-FREQUENCY, ANY-OUTPUT CLOCK GENERATOR
	SI5345	1Mb / 60P	10-Channel, Any-Frequency, Any-Output Jitter Attenuator/ Clock Multiplier
	SI5345	1Mb / 62P	10-CHANNEL, ANY-FREQUENCY, ANY-OUTPUT JITTER ATTENUATOR/CLOCK MULTIPLIER
Skyworks Solutions Inc.	SI5391	1Mb / 45P	Ultra Low-Jitter, 12-Output, Any-Frequency, Any-Output Clock Generator Rev. 0.7
	SI5345	976Kb / 58P	10-Channel, Any-Frequency, Any-Output Jitter Attenuator/ Clock Multiplier Rev. 1.2
	SI5334	1Mb / 37P	PIN-CONTROLLED ANY-FREQUENCY, ANY-OUTPUT QUAD CLOCK GENERATOR Rev. 1.3
	SI5341	1Mb / 49P	Low-Jitter, 10 or 4-Output, Any-Frequency, Any-Output Clock Generator Rev. 1.1

More results

Si5347-D-EVB Arkusz danych(PDF) 11 Page - Silicon Laboratories

Si5347-D-EVB Arkusz danych(HTML) 11 Page - Silicon Laboratories

Podobny numer części - Si5347-D-EVB

Podobny opis - Si5347-D-EVB

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55

Arkusz danych Pobierz

Link URL