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Chapter 1: Cyclone IV Device Datasheet
Glossary
December 2016
Altera Corporation
T
t
C
High-speed receiver and transmitter input and output clock period.
Channel-to-
channel-skew
(TCCS)
High-speed I/O block: The timing difference between the fastest and slowest output edges,
including t
CO
variation and clock skew. The clock is included in the TCCS measurement.
t
cin
Delay from the clock pad to the I/O input register.
t
CO
Delay from the clock pad to the I/O output.
t
cout
Delay from the clock pad to the I/O output register.
t
DUTY
High-speed I/O block: Duty cycle on high-speed transmitter output clock.
t
FALL
Signal high-to-low transition time (80–20%).
t
H
Input register hold time.
Timing Unit
Interval (TUI)
High-speed I/O block: The timing budget allowed for skew, propagation delays, and data
sampling window. (TUI = 1/(Receiver Input Clock Frequency Multiplication Factor) = t
C
/w).
t
INJITTER
Period jitter on the PLL clock input.
t
OUTJITTER_DEDCLK
Period jitter on the dedicated clock output driven by a PLL.
t
OUTJITTER_IO
Period jitter on the general purpose I/O driven by a PLL.
t
pllcin
Delay from the PLL inclk pad to the I/O input register.
t
pllcout
Delay from the PLL inclk pad to the I/O output register.
Transmitter
Output
Waveform
Transmitter output waveforms for the LVDS, mini-LVDS, PPDS and RSDS Differential I/O
Standards:
t
RISE
Signal low-to-high transition time (20–80%).
t
SU
Input register setup time.
U
—
—
Table 1–46. Glossary (Part 4 of 5)
Letter
Term
Definitions
Single-Ended Waveform
Differential Waveform (Mathematical Function of Positive & Negative Channel)
Positi
v
e Channel (p) = V
OH
N
egati
v
e Channel (n) = V
OL
Ground
V
OD
V
OD
V
OD
0 V
Vos
p
-
n
Содержание Cyclone IV
Страница 10: ...x Chapter Revision Dates Cyclone IV Device Handbook March 2016 Altera Corporation Volume 1...
Страница 14: ...I 2 Section I Device Core Cyclone IV Device Handbook March 2016 Altera Corporation Volume 1...
Страница 106: ...II 2 Section II I O Interfaces Cyclone IV Device Handbook March 2016 Altera Corporation Volume 1...
Страница 164: ...III 2 Section III System Integration Cyclone IV Device Handbook March 2016 Altera Corporation Volume 1...
Страница 274: ...vi Contents Cyclone IV Device Handbook February 2015 Altera Corporation Volume 2...
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Страница 280: ...I 2 Section I Transceivers Cyclone IV Device Handbook February 2015 Altera Corporation Volume 2...
Страница 440: ...iv Contents Cyclone IV Device Handbook December 2016 Altera Corporation Volume 3...
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