Lattice Semiconductor
ispGDX2 Family Data Sheet
ispGDX2V/B/C, ispGDX2EV/EB/EC Timing Adjusters
Parameter
Optional Adders
tINDIO
tPLL_SEC_DELAY
tIOO Output Adjusters
Slow Slew
LVTTL_out
LVCMOS_18_4mA_out
LVCMOS_18_5.33mA_out
LVCMOS_18_8mA_out
LVCMOS_18_12mA_out
LVCMOS_25_4mA_out
LVCMOS_25_5.33mA_out
LVCMOS_25_8mA_out
LVCMOS_25_12mA_out
LVCMOS_25_16mA_out
LVCMOS_33_4mA_out
LVCMOS_33_5.33mA_out
LVCMOS_33_8mA_out
LVCMOS_33_12mA_out
LVCMOS_33_16mA_out
LVCMOS_33_20mA_out
AGP_1X_out
BLVDS_out
CTT25_out
CTT33_out
GTL+_out
HSTL_I_out
HSTL_III_out
HSTL_IV_out
Description
-3
-32
-35
-5
Min. Max. Min. Max. Min. Max. Min. Max. Units
Input Delay
Secondary PLL Output
Delay
— 1.50 — 1.50 — 1.50 — 2.50 ns
— 1.30 — 1.30 — 1.30 — 1.30 ns
Using Slow Slew (LVTTL and
LVCMOS Outputs Only)
—
0.90
—
0.90
—
0.90
—
0.90
ns
Using 3.3V TTL Drive
— 1.20 — 1.20 — 1.20 — 1.20 ns
Using 1.8V CMOS Standard,
4mA Drive
—
0.30
—
0.30
—
0.30
—
0.30
ns
Using 1.8V CMOS Standard,
5.33mA Drive
—
0.30
—
0.30
—
0.30
—
0.30
ns
Using 1.8V CMOS Standard,
8mA Drive
—
0.00
—
0.00
—
0.00
—
0.00
ns
Using 1.8V CMOS Standard,
12mA Drive
—
0.00
—
0.00
—
0.00
—
0.00
ns
Using 2.5V CMOS Standard,
4mA Drive
—
1.20
—
1.20
—
1.20
—
1.20
ns
Using 2.5V CMOS Standard,
5.33mA Drive
—
1.00
—
1.00
—
1.00
—
1.00
ns
Using 2.5V CMOS Standard,
8mA Drive
—
0.40
—
0.40
—
0.40
—
0.40
ns
Using 2.5V CMOS Standard,
12mA Drive
—
0.40
—
0.40
—
0.40
—
0.40
ns
Using 2.5V CMOS Standard,
16mA Drive
—
0.40
—
0.40
—
0.40
—
0.40
ns
Using 3.3V CMOS Standard,
4mA Drive
—
1.20
—
1.20
—
1.20
—
1.20
ns
Using 3.3V CMOS Standard,
5.33mA Drive
—
1.20
—
1.20
—
1.20
—
1.20
ns
Using 3.3V CMOS Standard,
8mA Drive
—
0.80
—
0.80
—
0.80
—
0.80
ns
Using 3.3V CMOS Standard,
12mA Drive
—
0.60
—
0.60
—
0.60
—
0.60
ns
Using 3.3V CMOS Standard,
16mA Drive
—
0.60
—
0.60
—
0.60
—
0.60
ns
Using 3.3V CMOS Standard,
20mA Drive
—
0.30
—
0.30
—
0.30
—
0.30
ns
Using AGP 1x Standard
— 0.60 — 0.60 — 0.60 — 0.60 ns
Using Bus Low Voltage Dif-
ferential Signaling (BLVDS)
— 1.00 — 1.00 — 1.00 — 1.00
ns
Using CTT 2.5v
— 0.30 — 0.30 — 0.30 — 0.30 ns
Using CTT 3.3v
— 0.20 — 0.20 — 0.20 — 0.20 ns
Using GTL+
— 0.50 — 0.50 — 0.50 — 0.50 ns
Using HSTL 2.5V, Class I
— 0.50 — 0.50 — 0.50 — 0.50 ns
Using HSTL 2.5V, Class III — 0.60 — 0.60 — 0.60 — 0.60 ns
Using HSTL 2.5V, Class IV — 0.60 — 0.60 — 0.60 — 0.60 ns
36