SI5374B-A-GL Datasheet, PDF (15/20 Pages) Silicon Laboratories – Timing Selector Guide

CLOCK AND OSCILLATOR SELECTOR / 15
Synchronous Ethernet Clock
REQUEST SAMPLES AND DOWNLOAD DOCUMENTATION AT: www.silabs.com/synce
SyncE is used to distribute accurate timing in GbE, 10 GbE, 40 GbE and 100 GbE Carrier Ethernet systems. Every Carrier
Ethernet switch/router requires a high-performance SyncE clock to distribute timing and provide a low jitter Ethernet PHY
reference clock. The Si5328 is the industry’s lowest jitter, fully compliant SyncE clock, making it ideal for Ethernet PHYs
from GbE to 100 GbE. Operating from a single 2.5 or 3.3 V supply, the Si5328 is ideal for providing clock multiplication,
wander filtering and jitter attenuation, in high-performance Synchronous Ethernet-enabled switches and routers.
SYNCE CLOCK FEATURES
• Fully compliant with SyncE clock requirements (ITU G.8262)
• Generates any output frequency (8 kHz to 808 MHz) from
any input frequency (8 kHz to 710 MHz)
• Dual clock outputs with 0.3 ps RMS jitter and any signal
format (LVDS, LVPECL, CML, CMOS)
• Integrated loop filter with selectable loop bandwidths:
0.1 Hz; 1 to 10 Hz
• Compact factor 6 mm x 6 mm QFN
• Reprogrammable to any frequency without BOM changes
25 MHz System CLK
Telecom or Ethernet System backplane
Si5328
SyncE Clock
TCXO
Switch
SoC
REFCLK 125
MHz Switch
125 MHz TXCLK
to each PHY
Switch Fabric
RX/
REFCLK
MUX
RX
CLK
1 G PHY
RX
RX
CLK
CLK
1 G PHY
1 G PHY
Data
Data
Data
MCU
RX
CLK
1 G PHY
Data
PART NUMBER
Si5328B
Si5328C
# OF INPUTS
2
2
INPUT CLOCK
FREQUENCY
RANGE
8 kHz - 710 MHz
# OUTPUT CLOCKS
OUTPUT CLOCK PHASE
FREQUENCY
JITTER
RANGE
(RMS TYP)
2
8 kHz - 808 MHz 0.3 ps
EEC OPTION 1 AND 2
WANDER FILTERING
Yes
8 kHz - 346 MHz
2
8 kHz - 346 MHz 0.3 ps
Yes
PACK AGE