VITESSE
SEMICONDUCTOR CORPORATION
Preliminary Datasheet
155/622 Mhz 16 Channel PRBS
Generator and Comparator.
VSC8109
AC Timing Characteristics
Table 8: AC Timing Characteristics
Parameter
Description
Min
Typ
Max
Units
T
XDATA input setup time with respect to TCKP
XDATA input hold time with respect to TCKP
DATA input setup time with respect to RCKP
DATA input hold time with respect to RCKP
ERR_C output delay with respect to RCKP
0.55
0
—
—
—
—
—
—
—
—
—
—
ns
ns
ns
ns
ns
SUXDTC
T
HXDTC
T
0.10
0.45
1.47
SUDRC
T
HDRC
T
ERRCV
WRD_SRC input setup time with respect to
LD_WRD_U/L and LD_SRC_U/L
T
0.25
—
—
ns
WSSU
WRD_SRC input hold time with respect to
LD_WRD_U/L and LD_SRC_U/L
T
0.5
—
—
—
ns
ns
WSH
T
Q[15:0] output delay with respect to TCKOP622 +/-
0.04
0.28
QR
Note: Generated Waveforms are synchronous and assume a 155.5 or 622MHz TCKP/N signal.
Figure 1: Signals Setup and Hold Time
TCKP
TSUXDTC
THXDTC
XDATA[15:0]
RCKP
THDRC
TERRCV
TSUDRC
DATA[15:0]
ERR_C[8:0]
WRD_SRC[7:0]
Data Setup
TWSH
TWSSU
LD_WRD_U/L
LD_SRC_U/L
TCKO622P
Q[15:0]
T
QR
Page 8
VITESSE SEMICONDUCTOR CORPORATION
741 Calle Plano, Camarillo, CA 93012 • 805/388-3700 • FAX: 805/987-5896
G52207-0, Rev. 3.0
4/3/98
VITESSE [ VITESSE SEMICONDUCTOR CORPORATION ]
