VSC8140QR VITESSE [Vitesse Semiconductor Corporation], VSC8140QR Datasheet - Page 15

• Manufacturer Part Number: VSC8140QR
• Description: 2.48832Gb/s 16:1 SONET/SDH Transceiver with Integrated Clock Generator
• Manufacturer: VITESSE [Vitesse Semiconductor Corporation]

VSC8140
Data Sheet
9/6/00
G52251-0, Rev. 4.0
Table 1: Transmitter AC Characteristics
T
T
T
T
T
TXCLK
t
t
TXCLK16O
TXCLK16I
RCK
T
t
t
Clock Multiplier Performance
T
T
Jitter
TXCLK16R
TXCLK16F
DH
PD
D
TXDSU
TXDH
TXDOR
TXDOF
DV
DJ
CJ
Parameters
D
tol
D
,
,
D
D
Figure 21: Differential and Single-Ended Input / Output Voltage Measurement
* Differential swing
TXCLK16I/TXCLK16O period
Data setup time to the rising edge of
TXCLK16I+
Data hold time after the rising edge
of TXCLK16I+
TXOUT± rise and fall time
Transmit clock duty cycle
TXCLK16O± rise and fall times
TXCLK16O± duty cycle
TXCLK16I± duty cycle
Reference clock duty cycle
Parallel data to DINVALID
TXCLKO period
Center of output data eye from
falling edge of TXCLKO
Output data jitter
Output clock jitter
Jitter tolerance
Tuning Range
741 Calle Plano, Camarillo, CA 93012 • 805/388-3700 • FAX: [phone]
Differential swing is specified as equal in magnitude to single-ended swing.
Description
b
a
b
a
VITESSE
VITESSE SEMICONDUCTOR CORPORATION
SEMICONDUCTOR CORPORATION
) is specified as | b - a | ( or | a - b | ), as is the single-ended swing.
Single
Ended
Swing
Differential
Swing
=
=
Min
-100
0.75
1.0
-75
—
—
40
—
46
35
40
—
—
—
—
—
3 t
Transceiver with Integrated Clock Generator
401.9
D
Typ
6.4
—
—
—
—
—
—
—
—
—
—
—
—
+ 0.3
Max
+100
+75
120
250
—
—
—
60
53
65
60
—
—
—
4
4
2.48832Gb/s 16:1 SONET/SDH
Units
ppm
—
ns
ns
ns
ps
%
ps
%
%
%
ns
ps
ps
ps
ps
—
—
—
20% to 80% into 100 load.
See Figure 13.
—
See Figure 24
—
Assuming 10% distortion of
TXCLK16O.
—
—
—
See Figure 19
RMS, tested to SONET
specification (12kHz to
20MHz) with 2ps RMS jitter
on REFCLK.
RMS, tested to SONET
specification (12kHz to
20MHz) with 2ps RMS jitter
on REFCLK.
Exceeds SONET/SDH mask
Conditions
Page 15