VSC8151 查看數據表（PDF） - Vitesse Semiconductor
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VSC8151 Datasheet PDF : 30 Pages
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VITESSE
SEMICONDUCTOR CORPORATION
2.488Gb/s SONET/SDH
STS-48/STM-16 Section Terminator
Advance Product Information
VSC8151
AC Timing Characteristics
Figure 8: Overhead Output Timing Diagram
RXOHOUT[7:0] E2
RXOHCLK
RXFPOUT
A1
A2
TOHSU
TOHH
TOHCLKW
C1/J0
TFPSU
Table 3: Overhead Output Timing (STS-48/STM-16 Mode)
Parameter
Description
Min
Typ
TOHSU
Overhead output setup time with respect to RXOHCLK
70.5
—
TOHH
Overhead output hold time with respect to RXOHCLK
70.5
—
TOHCLKW Overhead output clock period
—
154
TFPSU
Frame pulse setup time with respect to RXOHCLK
88
—
TFPW
Frame pulse width
51.34
—
Note: Generated Waveforms are synchronous and assume a 2.488GHz RXSCLKIN signal.
Table 4: Overhead Output Timing (STS-12/STM-4 Mode)
Parameter
Description
Min
Typ
TOHSU
Overhead output setup time with respect to RXOHCLK
73.5
—
TOHH
Overhead output hold time with respect to RXOHCLK
73.5
—
TOHCLKW Overhead output clock period
—
154
TFPSU
Frame pulse setup time with respect to RXOHCLK
104
—
TFPW
Frame pulse width
51.34
—
Note: Generated Waveforms are synchronous and assume a 622MHz RXSCLKIN signal.
Table 5: Overhead Output Timing (STS-3/STM-1 Mode)
Parameter
Description
Min
Typ
TOHSU
Overhead output setup time with respect to RXOHCLK
102
—
TOHH
Overhead output hold time with respect to RXOHCLK
102
—
TOHCLKW Overhead output clock period
—
154
TFPSU
Frame pulse setup time with respect to RXOHCLK
155
—
TFPW
Frame pulse width
51.34
—
Note: Generated Waveforms are synchronous and assume a 155MHz RXSCLKIN signal.
TFPW
Max
—
—
—
—
51.44
Max
—
—
—
—
51.44
Max
—
—
—
—
51.44
Units
ns
ns
ns
ns
ns
Units
ns
ns
ns
ns
ns
Units
ns
ns
ns
ns
ns
Page 14
© VITESSE SEMICONDUCTOR CORPORATION
741 Calle Plano, Camarillo, CA 93012 • 805/388-3700 • FAX: 805/987-5896
G52225-0, Rev. 2.9
12/1/99
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