EPM570 Altera, EPM570 Datasheet - Page 41

• Manufacturer Part Number: EPM570
• Description: MAX II Device Family
• Manufacturer: Altera

Altera Corporation
December 2004
PCI Compliance
MAX II EPM1270 and EPM2210 devices are compliant with PCI
applications as well as all 3.3-V electrical specifications in the PCI Local
Bus Specification Revision 2.2. These devices are also large enough to
support PCI intellectual property (IP) cores.
device speed grades that meet the PCI timing specifications.
Schmitt Trigger
The input buffer for each MAX II device I/O pin has an optional Schmitt
trigger setting for the 3.3-V and 2.5-V standards. The Schmitt trigger
allows input buffers to respond to slow input edge rates with a fast
output edge rate. Most importantly, Schmitt triggers provide hysteresis
on the input buffer, preventing slow rising noisy input signals from
ringing or oscillating on the input signal driven into the logic array. This
provides system noise tolerance on MAX II inputs, but adds a small,
nominal input delay.
The JTAG input pins (TMS, TCK, and TDI) have Schmitt trigger buffers
which are always enabled.
Output Enable Signals
Each MAX II IOE output buffer supports output enable signals for tri-
state control. The output enable signal can originate from the
GCLK[3..0] global signals or from the MultiTrack interconnect. The
MultiTrack interconnect routes output enable signals and allows for a
unique output enable for each output or bidirectional pin.
Note to
(1)
Table 2–5. MAX II Devices & Speed Grades that Support 3.3-V PCI Electrical
Specifications & Meet PCI Timing
This table contains preliminary information.
Table
Core Version a.b.c variable
2–5:
EPM1270
EPM2210
Device
Note (1)
MAX II Device Handbook, Volume 1
Table 2–5
All Speed Grades
All Speed Grades
33-MHz PCI
shows the MAX II
MAX II Architecture
2–35