VSC8514 Evaluation Board
VPPD-03695 VSC8514 User Guide Revision 1.0
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Figure 3 • ZL30343 LED Indication
3.1.3
External RefClk Option
The user may choose to provide an external PHY REFCLK via SMA connections to J21 and J23 (as shown
in Figure 3 above). To route the SMA signals to the device the user must reorient the zero ohm resistors,
R151, and R152.
3.1.4
Recovered Clocks
There are two recovered clocks available from the VSC8514, through J22 and J24. In the default
configuration, CLK_SQUELCH_IN is pulled down, which disables the clock squelching and RCVRDCLK1 is
connected to the Zarlink device while RCVRDCLK2 is connected to SMA connector J24. RCVRDCLK1 and
RCVRDCLK2 connections can be reconfigured by replacing the zero ohm resistors, R19, and R22,
respectively.
Network Interface Microcontroller Card
A “Rabbit” microcontroller card is included to facilitate a software interface to the registers on the
VSC8514. The controller card has a hard coded static IP address. Refer to the label on the card for the
value. This address is required by the user to initiate communications via the board and the GUI.
The factory programmed Rabbit board IP address is:
.
10.9.70.193
