vsc8131 Vitesse Semiconductor Corp, vsc8131 Datasheet - Page 6

• Manufacturer Part Number: vsc8131
• Description: 2.488 Gbit/sec 32 1 Sonet/sdh Mux With Clock Generator
• Manufacturer: Vitesse Semiconductor Corp

2.488 Gbit/sec
32:1 SONET/SDH Mux with Clock Generator
Page 6
AC Characteristics
Table 1: VSC8131 Multiplexer AC Characteristics
Parameter
t
t
t
t
CKPROP
DCLK32
DRCLK
DCLOL
t
t
t
DC32
t
CMD
DSU
t
t
t
t
t
t
PEO
r
DH
r
r
r
r
, t
, t
, t
, t
,
t
f
f
f
f
f
N O TE:
H igh speed differential serial data output
H igh speed differential clock output
REFCLK period
CK78IN period
CK78OUT (CLK/32) duty cycle
LOL Duty Cycle (When CMU is not locked)
D(0-31) and PARBIT set-up time (wrt CK78IN rising edge)
D(0-31) and PARBIT hold time (wrt CK78IN rising edge)
Parity error output timing; rising edge of CK78IN to PARERR
Allowable propagation delay for connecting CK78OUT to CK78IN
High speed clock output (CO
muxed data output (DO
REFCLK rise and fall times (10%-90%)
D(0.31) rise and fall times (10%-90%)
CK78OUT, LOL and PARERR rise and fall times (10%-90%)
DO
CO
+
+
Parity and parallel data inputs
741 Calle Plano, Camarillo, CA 93012 • 805/388-3700 • FAX: [phone]
rise and fall times (20%-80%)
rise and fall times (20%-80%)
P A RB IT , D (0...31)
Parallel data clock output
Parallel data clock input
R eference clock input
= D on’t care
Parity error output
C K 78O U T
P A RER R
R EFCLK
C K 78IN
Figure 4: VSC8131 Multiplexer Waveforms
CO +
D O +
VITESSE
VITESSE SEMICONDUCTOR CORPORATION
SEMICONDUCTOR CORPORATION
+
)
Description
+
) timing; falling edge of CO+ to
t
C K PR O P
V A LID D A T A (1)
t
D SU
t
D C 32
t
PEO
t
D H
( Over recommended operating conditions )
D0 IS MSB AND TRANSMITTED FIRST
t
D C 32
D 0 D 1 D 2 D 3 D 4
t
D C LK 32
t
D R CLK
t
CM D
V A LID D A T A (2)
... ... ... ... ... ...
Serialized D ata
Min
100
1.0
1.0
1.9
t
40
40
D C LK 32
0
-
-
-
-
-
Preliminary Datasheet
t
PEO
D 277 D 28 D 29 D 30 D 31
12.8
Typ
12.8
150
150
-
-
-
-
-
-
-
Max
170
270
170
VSC8131
2.0
6.0
3.0
1.5
4.0
60
60
-
-
-
-
G52249-0, Rev. 3.0
Units
ns
ns
ns
ps
ps
ns
%
ns
ns
ns
ns
ps
ns
%
11/9/99