VSC7212 Datasheet, PDF (20/34 Pages) Vitesse Semiconductor Corporation – Gigabit Interconnect Chip

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Gigabit Interconnect Chip
Preliminary Data Sheet
VSC7212
AC Characteristics
Figure 13: Transmit Input Timing Waveforms with TMODE = 000
REFCLK
(DUAL=0)
REFCLK
(DUAL=1)
Internal Clock
(from PLL)
T(7:0)
C/D
Valid
WSEN
T₁
T₂
Valid
T₁
T₂
Valid
Figure 14: Transmit Input Timing Waveforms with TMODE = 10X
TBC
Internal Clock
(from PLL)
T(7:0)
C/D
Valid
WSEN
T₁
T₂
Valid
T₁
T₂
Valid
Table 9: Transmit Input AC Characteristics with TMODE = 000 or TMODE = 10X
Parameters
Description
Min
Max Units
Conditions
T₁
Input Setup time to the rising
edge of REFCLK or TBC
1.5
—
ns _{Measured between the valid data}
level of the input and the 1.4V point
T₂
Input Hold time after the rising
edge of REFCLK or TBC
1.0
—
ns ^{of REFCLK or TBC}
Page 20
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G52268-0, Rev 3.3
04/10/01