EP4CGX75DF27C7N Altera, EP4CGX75DF27C7N Datasheet - Page 40

• Manufacturer Part Number: EP4CGX75DF27C7N
• Description: Cyclone IV GX
• Manufacturer: Altera
• Series: CYCLONE® IV GXr

Specifications of EP4CGX75DF27C7N

• Number Of Logic Elements/cells: 73920
• Number Of Labs/clbs: 4620
• Total Ram Bits: 4257792
• Number Of I /o: 310
• Number Of Gates: -
• Voltage - Supply: 1.16 V ~ 1.24 V
• Mounting Type: *
• Operating Temperature: 0°C ~ 85°C
• Package / Case: *
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

1–40
Table 1–46. Glossary (Part 3 of 5)
Cyclone IV Device Handbook, Volume 3
Letter
S
T
Single-ended
voltage-
referenced I/O
Standard
SW (Sampling
Window)
t
Channel-to-
channel-skew
(TCCS)
tcin
t
tcout
t
t
t
Timing Unit
Interval (TUI)
t
t
t
tpllcin
tpllcout
C
CO
DUTY
FALL
H
INJITTER
OUTJITTER_DEDCLK
OUTJITTER_IO
Term
The JEDEC standard for SSTl and HSTL I/O standards defines both the AC and DC input signal
values. The AC values indicate the voltage levels at which the receiver must meet its timing
specifications. The DC values indicate the voltage levels at which the final logic state of the
receiver is unambiguously defined. After the receiver input crosses the AC value, the receiver
changes to the new logic state. The new logic state is then maintained as long as the input stays
beyond the DC threshold. This approach is intended to provide predictable receiver timing in the
presence of input waveform ringing.
High-speed I/O block: The period of time during which the data must be valid to capture it
correctly. The setup and hold times determine the ideal strobe position in the sampling window.
High-speed receiver and transmitter input and output clock period.
High-speed I/O block: The timing difference between the fastest and slowest output edges,
including t
Delay from the clock pad to the I/O input register.
Delay from the clock pad to the I/O output.
Delay from the clock pad to the I/O output register.
High-speed I/O block: Duty cycle on high-speed transmitter output clock.
Signal high-to-low transition time (80–20%).
Input register hold time.
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
Period jitter on the PLL clock input.
Period jitter on the dedicated clock output driven by a PLL.
Period jitter on the general purpose I/O driven by a PLL.
Delay from the PLL inclk pad to the I/O input register.
Delay from the PLL inclk pad to the I/O output register.
V
V
CO
OH
OL
variation and clock skew. The clock is included in the TCCS measurement.
Definitions
V
REF
Chapter 1: Cyclone IV Device Datasheet
© December 2010 Altera Corporation
V
V
IH(DC)
IL(DC)
C
/w).
V
V
IH ( AC )
IL(AC )
V
CCIO
V
Glossary
SS