M1AFS250-FGG256I Actel Corporation, M1AFS250-FGG256I Datasheet - Page 154

• Manufacturer Part Number: M1AFS250-FGG256I
• Description: Actel Fusion Family Of Mixed Signal Fpgas
• Manufacturer: Actel Corporation

Device Architecture
Table 2-69 • Fusion Pro I/O Features
2- 13 8
Feature
Single-ended
referenced transmitter
features
Single-ended receiver features
Voltage-referenced
receiver features
CMOS-style
M-LVDS, or LVPECL
transmitter
LVDS/LVPECL differential
receiver features
Features Supported on Pro I/Os
Table 2-69
LVDS,
and
differential
lists all features supported by transmitter/receiver for single-ended and differential I/Os.
voltage-
BLVDS,
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Hot insertion in every mode except PCI or 5 V input tolerant (these modes use
clamp diodes and do not allow hot insertion)
Activation of hot insertion (disabling the clamp diode) is selectable by I/Os.
Weak pull-up and pull-down
Two slew rates
Skew between output buffer enable/disable time: 2 ns delay (rising edge) and
0 ns delay (falling edge); see
Enable/Disable Time" on page 2-151
Five drive strengths
5 V–tolerant receiver
LVTTL/LVCMOS 3.3 V outputs compatible with 5 V TTL inputs
Tolerance" section on page
High performance
Schmitt trigger option
ESD protection
Programmable delay: 0 ns if bypassed, 0.625 ns with '000' setting, 6.575 ns
with '111' setting, 0.85-ns intermediate delay increments (at 25°C, 1.5 V)
High performance
Separate ground planes, GND/GNDQ, for input buffers only to avoid output-
induced noise in the input circuitry
Programmable Delay: 0 ns if bypassed, 0.625 ns with '000' setting, 6.575 ns
with '111' setting, 0.85-ns intermediate delay increments (at 25°C, 1.5 V)
High performance
Separate ground planes, GND/GNDQ, for input buffers only to avoid output-
induced noise in the input circuitry
Two I/Os and external resistors are used to provide a CMOS-style LVDS,
BLVDS, M-LVDS, or LVPECL transmitter solution.
Activation of hot insertion (disabling the clamp diode) is selectable by I/Os.
Weak pull-up and pull-down
Fast slew rate
ESD protection
High performance
Programmable delay: 0.625 ns with '000' setting, 6.575 ns with '111' setting,
0.85-ns intermediate delay increments (at 25°C, 1.5 V)
Separate input buffer ground and power planes to avoid output-induced noise
in the input circuitry
(Table 2-73 on page
(Table 2-73 on page
(Table 2-73 on page
(Table 2-73 on page
R e visio n 1
("5 V Input Tolerance" section on page
2-150)
Description
"Selectable Skew between Output Buffer
for more information
2-145)
2-145)
2-145)
2-145)
2-146)
("5 V Output