HC230 ALTERA [Altera Corporation], HC230 Datasheet - Page 206

• Manufacturer Part Number: HC230
• Description: HardCopy II Device Family
• Manufacturer: ALTERA [Altera Corporation]

HardCopy Series Handbook, Volume 1
8–18
On-Chip Series Termination
Stratix II and HardCopy II devices support I/O driver on-chip series
termination (RS) through drive-strength control for single-ended I/O
standards. There are two ways to implement the RS in Stratix II and
Hardcopy II devices:
■
■
On-Chip Series Termination without Calibration
HardCopy II devices support output-driver impedance matching to
closely match the impedance of the transmission line. If you select
matching impedance, you cannot select programmable-current drive
strength.
standards that support on-chip series termination without calibration.
Notes to
(1)
(2)
(3)
3.3-V LVTTL
3.3-V LVCMOS
2.5-V LVTTL
2.5-V LVCMOS
1.8-V LVTTL
1.8-V LVCMOS
1.5-V LVTTL
1.5-V LVCMOS
2.5-V SSTL class I
2.5-V SSTL class II
1.8-V SSTL class I
1.8-V SSTL class II
1.8-V HSTL class I
1.8-V HSTL class II
1.5-V HSTL class I
Table 8–12. HC230 and HC240 Selectable I/O Drivers with On-Chip Series
Termination without Calibration
RS without calibration for both row and column I/O pins
RS with calibration only for column I/O pins
I/O Standard
These numbers are preliminary and pending silicon characterization.
HardCopy II HC230 and HC240 devices do not support on-chip series
termination with this I/O standard on these pins.
Support pending HardCopy II characterization.
Table
Table 8–12
8–12:
lists the HardCopy II HC230 and HC240 output
Column I/O Pins
25 or 50 Ω
25 or 50 Ω
25 or 50 Ω
25 or 50 Ω
25 or 50 Ω
25 or 50 Ω
50 Ω
50 Ω
50 Ω
25 Ω
50 Ω
25 Ω
50 Ω
25 Ω
(3)
Note (1)
Row I/O Pins
Altera Corporation
25 or 50 Ω
25 or 50 Ω
25 or 50 Ω
25 or 50 Ω
September 2008
50 Ω
50 Ω
(2)
(2)
(2)
(2)