vsc880 Vitesse Semiconductor Corp, vsc880 Datasheet - Page 20

• Manufacturer Part Number: vsc880
• Description: High Performance 16x16 Serial Crosspoint Switch Semiconductor Corporation
• Manufacturer: Vitesse Semiconductor Corp

High Performance 16x16
Serial Crosspoint Switch
Page 20
AC Characteristics
Table 1: LVDS and TTL Outputs
Table 2: Transmit Data Input Timing Table
Note: Duty cycle for T
Parameters
Parameter
DATA[15:0], FI[3:0], WEN,
T
T
F
J
T
T
T
T
REFCLK
REFCLK
REFCLK
T
R,LVDS
T
F,LVDS
SKEW
R,TTL
F,TTL
INSU
INH
INT
CEN, CCLK,
REFCLK
Reference (word) clock period
Reference clock frequency stability
Reference clock input jitter
Parallel data setup time with respect to REFCLK
Parallel data hold time with respect to REFCLK
REFCLK to REFCLK skew using parallel switch chips
TTL Output Rise Time
TTL Output Fall Time
LVDS Output Rise Time
LVDS Output Fall Time
REFCLK
© VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012
is 50% +/- 10% worst case
Description
Figure 10: Parallel Data Output Timing Diagram
Tel: (800) VITESSE • FAX: [phone] • Email: [e-mail]
Figure 9: Parallel Data Input Timing Diagram
VITESSE
SEMICONDUCTOR CORPORATION
Description
T
INT
Internet: www.vitesse.com
Min
2.5
2.5
T
INT
Typ
100
100
T
REFCLK
T
INSU
Min
1
2
Max
Units
T
Typ
INH
ns
ns
ps
ps
16
10-90% @ 50pF
10-90% @ 50pF
20-80%
20-80%
Max
100
7
1
Conditions
Data Sheet
VSC880
G52191-0, Rev 4.2
ps RMS
Units
ppm
ns
ns
ns
ns
01/05/01