SI5040-EVB Datasheet, PDF (1/24 Pages) Silicon Laboratories – Four selectable on-chip reference frequencies

Si5040 EVALUATION BOARD
Si5040-EVB
Description
Features
The Si5040-EVB provides a platform for evaluating
Silicon Laboratories' Si5040 XFP Signal Conditioning
Transceiver. The Si5040 is a complete, low-power, high-
performance XFP transceiver suitable for use in all XFP
module types, from short-reach datacom to long-reach
telecom applications. The Si5040 is unique in that it
integrates a rate-agile, programmable-bandwidth, jitter-
attenuating transmit CMU and a fixed-bandwidth
receive CMU. The device supports referenceless
operation or operation with a synchronous or
asynchronous reference clock. The device can be
completely configured through a serial microcontroller
interface. The Si5040 Transceiver provides full-duplex
operation at serial data rates from 9.95 to 11.4 Gbps
(continuous).
The Si5040-EVB also contains an MCU (C8051F320)
and a crystal oscillator (Si534), both from Silicon Labs.
The 8051F320 provides status and control
communication between the Si5040 and the Si5040-
EVB Software. The Si534 is a multi-rate crystal
oscillator that, when enabled, supplies one of four
selectable reference clocks to the Si5040 while
providing that clock at SMA connectors for external
monitoring/use.
The Silicon Laboratories MCU (C8051F320) has a USB
port that is used to communicate to a PC that is running
the Si5040 EVB software. The MCU also has a serial
port that connects to the serial control port of the Si5040
to read and write to its registers. In addition, the MCU
drives all but one of the LEDs on the EVB and can make
a very accurate reading of the three voltages that power
the EVB.
Note that starting in October of 2006, all Si5040-EVBs
will be assembled with Si5040 Rev B device on the
Si5040 Rev A Printed Circuit Board (PCB). Prior to
October of 2006, all Si5040-EVBs were assembled with
the Si5040 Rev A device on the Si5040 Rev B Printed
Circuit Board (PCB).
The Si5040-EVB includes the following:
 Evaluation of Silicon Laboratories' Si5040 XFP
Signal Conditioning Transceiver
 Separate supply connections for the following:
V_DD (1.8 V) powers the internal circuitry of the Si5040.
V_{DD_3p3} (3.3 V) powers the MCU and XTAL oscillator.
V_DDIO (1.8 or 3.3 V) powers the LVTTL IOs of the
Si5040.
 Four selectable on-chip reference frequencies.
 LEDs for visual monitoring of key chip and board
parameters.
 Si5040 EVB software allows for quick and easy
access to all registers in the Si5040.
 A dual-row header allows the Si5040 to be easily
connected to another MCU for serial control and
status communications.
 Synchronous output clock at 1/16 the recovered
clock rate.
Si5040-EVB Quick Start
Starting in October of 2006, all Si5040-EVBs will be
assembled with the Rev B device. Perform the following
steps to set up the Si5040-EVB.
1. Install the Si5040 EVB Driver. (This must be installed
before the EVB is connected to the PC via the USB
cable.)
2. Install the Si5040 EVB Software. (Assumes that
Microsoft .NET Framework 1.1 is already installed.)
3. Connect the power supplies to the EVB.
4. Turn on the power supplies.
5. Connect a USB cable from the EVB to the PC where
the software was installed.
6. Launch the Si5040 EVB Software by clicking on
Start ProgramsSilicon LaboratoriesSi5040
SoftwareSi5040 Register Programmer. The
“Select the EVB” window will appear. Simply click
OK (for connection with single EVB).
Rev. 0.4 4/08
Copyright © 2008 by Silicon Laboratories
Si5040-EVB