VSC830QZ 查看數據表（PDF） - Vitesse Semiconductor
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VSC830QZ Datasheet PDF : 18 Pages
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VITESSE
SEMICONDUCTOR CORPORATION
2.7Gb/s Asynchronous
Dual 2x2 Crosspoint Switch
Data Sheet
VSC830
Power-Down
Power to each output stage is provided through VCC, VCCP, and VEE. VCC is common to all outputs. To
power off unused outputs, tie the respective VEE and VCCP pin to VCC, as shown in Figure 2.
Figure 2: Power-Down Mode Example
VCC
VCCP1A
VCCP2A
VCCP1B
VCCP2B
VEE1A
“ON”
VEE2A
“ON”
VEE1B
“OFF”
VEE2B
“OFF”
Minimum power configuration requires output channel 1A active, so power must be applied to VCCP1A
and VEE1A at all times.
Programmable input termination
Across each differential input (from the + input to the - input) of the VSC830 is a switched 100Ω termina-
tion resistor. Using the TERM_ENABLE pin, the termination can be optionally disabled. To enable the input
termination, connect the respective TERM_ENABLE pin to VCC. To disable the internal termination, connect
TERM_ENABLE to VEE. If unconnected, the TERM_ENABLE pin will self-bias to VEE and disable the inter-
nal termination. Independent termination controls are provided for the “A” and “B” switches.
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
G52192-0, Rev 4.0
05/23/01
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