VSC8022FC 查看數據表（PDF） - Vitesse Semiconductor
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VSC8022FC Datasheet PDF : 17 Pages
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VITESSE
SEMICONDUCTOR CORPORATION
2.5Gb/s SONET-Compatible
8-Bit MUX/DEMUX Chipset
Data Sheet
VSC8021/VSC8022
VSC8021 Multiplexer AC Characteristics (Over recommended operating conditions)
Figure 3: VSC8021 Multiplexer Waveforms
CLKI ,(1) CLKIN
High speed differential clock input
BYCLK (1)(BYCLKN)
Byte clock input
CLK8 (2)
Phase adjustable ÷8 output
D1-D8, D1N-D8N
Parallel differential data inputs
CO, CON
High speed differential clock outputs
tC
tDSU
tDH
VALID DATA(1)
tD
tBCLK8
VALID DATA(2)
tCMD
DO,DON
High speed differential data outputs
SYNC
CLK8 adjustment input
D01 D02 D03 D04 D05 D06 D07 D08
Serialized Byte 1
NOTES: (1) Negative edge is active edge.
(2) BYCLK/CLK8 timing required when SYNC not connected to ERR.
CLKI (CLKIN) period x 8 = BYCLK (BYCLKN) period.
= Don’t care.
Table 1: VSC8021 Multiplexer AC Characteristics (over recommended operating conditions)
Parameter
Description
Min Typ Max Units
tC
Clock period(1)
400
ps
tD
BYTE clock period (tD = tC x 8)
3.2
ns
tDSU
Parallel data set-up time
0.6
ns
tDH
Data hold time
1.4
ns
tCMD
High-speed clock output (CO, CON) timing, falling
edge of CO to muxed data output, (DO, DON) timing
220
350 ps
tBCLK8
Byte clock to CLK8 timing(2)
0.5 1.0 1.5
ns
Jitter (p-p)
CLKI, CLKIN to DO, DON (max-min), (HI to LO),
same part, same pin at constant conditions
<50
ps
NOTES: (1) The parts are guaranteed by design to operate from DC to a maximum frequency of 2.5GHz.
(2) Required when SYNC not connected to ERR.
Conditions
Page 4
© VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012
Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: prodinfo@vitesse.com
Internet: www.vitesse.com
G52028-0, Rev 4.1
05/25/01
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