Page 62
Glossary
Table 63. Glossary Table (Part 4 of 4)
Letter
Subject
VCM(DC)
Definitions
DC common mode input voltage.
VICM
Input common mode voltage—The common mode of the differential signal at the receiver.
Input differential voltage swing—The difference in voltage between the positive and
complementary conductors of a differential transmission at the receiver.
VID
VDIF(AC)
VDIF(DC)
AC differential input voltage—Minimum AC input differential voltage required for switching.
DC differential input voltage— Minimum DC input differential voltage required for switching.
Voltage input high—The minimum positive voltage applied to the input which is accepted by
the device as a logic high.
VIH
VIH(AC)
VIH(DC)
High-level AC input voltage
High-level DC input voltage
V
Voltage input low—The maximum positive voltage applied to the input which is accepted by
the device as a logic low.
VIL
VIL(AC)
VIL(DC)
Low-level AC input voltage
Low-level DC input voltage
Output common mode voltage—The common mode of the differential signal at the
transmitter.
VOCM
Output differential voltage swing—The difference in voltage between the positive and
complementary conductors of a differential transmission at the transmitter.
VOD
VSWING
VX
Differential input voltage
Input differential cross point voltage
Output differential cross point voltage
High-speed I/O block—Clock Boost Factor
VOX
W
W
X
Y
Z
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Cyclone V Device Datasheet
July 2014 Altera Corporation
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