VITESSE
SEMICONDUCTOR CORPORATION
Data Sheet
2.488GHz SONET/SDH
Clock Generator
VSC8121
VSC8121 Evaluation Board
An evaluation board is available from Vitesse which can be used to characterize the performance of the
VSC8121 2.488GHz SONET/SDH Clock Generator. The following sections provide a layout for the board,
general notes regarding usage and descriptions of input/output ports, as well as an example equipment setup. To
learn more about how to order this board for your evaluation needs, please contact your local Vitesse Sales
Office.
Figure 7: Top-view Layout of the VSC8121 Evaluation Board
J1
VITESSE
Board dimensions:
3” x 2.75” x 0.06”
U2
J3
J5
Component Values:
C2
R1 = 10kΩ
R2 = 10kΩ
R3 = 11Ω
R4 = 0Ω
R5 = 0Ω
R1
J4
J6
S1
S2
L1
R6 = leave open
R7 = leave open
R2
C8
C1 = 10µF
C2 = 10µF
C4 = 0.1µF
C8 = 0.1µF
C9 = 0.01µF
C10 = 0.01µF
J7
JP1
U1
R4
R5
VS8121EVA
REV. A
C4
R7
C10
R6
C9
C1
L1 = TDK-CB50-1206 ferrite
J9
J8
G52163-0, Rev 4.2
04/16/01
Page 13
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