SI5348 Datasheet, PDF (17/54 Pages) Silicon Laboratories – Network Synchronizer for SyncE/ 1588 PTP Telecom Boundary (T-BC) and Slave (T-SC) Clocks

Si5348 Rev D Data Sheet
Functional Description
3.9 Outputs
The Si5348 supports seven differential output drivers. Each driver has a configurable voltage amplitude and common mode voltage
covering a wide variety of differential signal formats including LVPECL, LVDS, HCSL, and CML. In addition to supporting differential
signals, any of the outputs can be configured as single-ended LVCMOS (3.3 V, 2.5 V, or 1.8 V) providing up to 14 single-ended outputs,
or a combination of differential and single-ended outputs.
3.9.1 Output Crosspoint
A crosspoint allows any of the output drivers to connect with any of the DSPLLs as shown in the figure below. The crosspoint configura-
tion is programmable and can be stored in NVM so that the desired output configuration is ready at power-up.
Si5348
DSPLL
A
DSPLL
C
DSPLL
D
Output
Crosspoint
A
C
÷R0
D
A
C
÷R1
D
A
C
÷R2
D
A
C
÷R3
D
A
C
D
÷R4
A
C
÷R5
D
R5
A
C
÷R6
D
VDDO0
OUT0
OUT0b
VDDO1
OUT1
OUT1b
VDDO2
OUT2
OUT2b
VDDO3
OUT3
OUT3b
VDDO4
OUT4
OUT4b
VDDO5
OUT5
OUT5b
VDDO6
OUT6
OUT6b
Figure 3.17. DSPLL to Output Driver Crosspoint
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