EP3C16F256I7 Altera, EP3C16F256I7 Datasheet - Page 169

• Manufacturer Part Number: EP3C16F256I7
• Description: Cyclone III
• Manufacturer: Altera

Altera Corporation-Preliminary
March 2007
Table 7–3
series termination.
On-Chip Termination Without Calibration
Cyclone III devices support driver impedance matching to the impedance
of the transmission line, typically 25 or 50 Ω . When used with the output
drivers, on-chip termination sets the output driver impedance to 25 or
50 Ω . Cyclone III devices also support I/O driver series termination (R
3.0-V LVTTL
3.0-V LVCMOS
2.5-V LVTTL/ LVCMOS
1.8-V LVTTL/LVCMOS
1.5-V LVCMOS
1.2-V LVCMOS
SSTL-2 Class I
SSTL-2 Class II
SSTL-18 Class I
SSTL-18 Class II
HSTL-18 Class I
HSTL-18 Class II
HSTL-15 Class I
HSTL-15 Class II
HSTL-12 Class I
HSTL-12 Class II
Table 7–3. Selectable I/O Drivers for On-Chip Termination without
Calibration
I/O Standard
lists the I/O standards that support impedance matching and
On Chip Series Termination without Calibration
Row I/O
50
25
25
25
25
25
25
25
50
25
50
25
50
50
50
50
50
50
—
50
50
—
Cyclone III Device Handbook, Volume 1
Column I/O
On-Chip Termination Support
Setting
50
25
50
25
50
25
50
25
50
25
50
25
50
25
50
25
50
25
50
25
50
25
Unit
Ω
Ω
Ω
Ω
Ω
Ω
Ω
Ω
Ω
Ω
Ω
Ω
Ω
Ω
Ω
Ω
Ω
Ω
Ω
Ω
Ω
Ω
7–17
S
=