afs600 Actel Corporation, afs600 Datasheet - Page 165

• Manufacturer Part Number: afs600
• Description: Actel Fusion Programmable System Chips Mixed-signal Family With Optional Arm Support
• Manufacturer: Actel Corporation

Summary of I/O Timing Characteristics – Default I/O Software Settings
Table 2-87 • Summary of AC Measuring Points
Table 2-88 • I/O AC Parameter Definitions
Standard
3.3 V LVTTL / 3.3 V LVCMOS
2.5 V LVCMOS
1.8 V LVCMOS
1.5 V LVCMOS
3.3 V PCI
3.3 V PCI-X
3.3 V GTL
2.5 V GTL
3.3 V GTL+
2.5 V GTL+
HSTL (I)
HSTL (II)
SSTL2 (I)
SSTL2 (II)
SSTL3 (I)
SSTL3 (II)
LVDS
LVPECL
Parameter
t
t
t
t
t
t
t
t
t
t
t
t
DP
PY
DOUT
EOUT
DIN
PYS
HZ
ZH
LZ
ZL
ZHS
ZLS
Applicable to All I/O Bank Types
Data to Pad delay through the Output Buffer
Pad to Data delay through the Input Buffer with Schmitt trigger disabled
Data to Output Buffer delay through the I/O interface
Enable to Output Buffer Tristate Control delay through the I/O interface
Input Buffer to Data delay through the I/O interface
Pad to Data delay through the Input Buffer with Schmitt trigger enabled
Enable to Pad delay through the Output Buffer—HIGH to Z
Enable to Pad delay through the Output Buffer—Z to HIGH
Enable to Pad delay through the Output Buffer—LOW to Z
Enable to Pad delay through the Output Buffer—Z to LOW
Enable to Pad delay through the Output Buffer with delayed enable—Z to HIGH
Enable to Pad delay through the Output Buffer with delayed enable—Z to LOW
Input Reference Voltage
(V
0.75 V
0.75 V
1.25 V
1.25 V
REF_TYP
0.8 V
0.8 V
1.0 V
1.0 V
1.5 V
1.5 V
–
–
–
–
–
–
–
–
)
A d v an c ed v1 . 4
Board Termination Voltage
Definition
(V
1.485 V
1.485 V
0.75 V
0.75 V
1.25 V
1.25 V
1.2 V
1.2 V
1.5 V
1.5 V
TT_REF
–
–
–
–
–
–
–
–
)
Actel Fusion Programmable System Chips
Measuring Trip Point (V
0.615 * V
0.285 * V
0.285 * V
0.615 * V
Cross point
Cross point
0.90 V
0.75 V
1.4 V
1.2 V
V
V
V
V
V
V
V
V
V
V
REF
REF
REF
REF
REF
REF
REF
REF
REF
REF
CCI
CCI
CCI
CCI
(RR)
(FF))
(RR)
(FF)
2-151
trip
)