24888 Rev 3.03 - July 12, 2004 AMD-8151
TM
AGP Tunnel Data Sheet
36
The following table shows DC characteristics for signals on the VDD15 power plane when AGP 2.0 signaling
is enabled.
The following table shows DC characteristics for signals on the VDD15 power plane when AGP 3.0 signaling
is enabled.
Symbol Parameter Description Min Max Units Comments
V
IL
Input low voltage -0.5 0.4 VDD15 V
V
IH
Input high voltage 0.6 VDD15 0.5 + VDD15 V
V
OL
Output low voltage; I
OUT
= 1.0 mA 0.15 VDD15 V
V
OH
Output high voltage; I
OUT
= 0.2 mA 0.85 VDD15 V
V
REFI
Input reference voltage on A_REFGC 0.48 VDD15 0.52 VDD15 V
V
REFO
Output reference voltage on A_REFCG 0.48 VDD15 0.52 VDD15 V
I
IL
Input leakage current +/- 10 uA
C
IN
Input capacitance 8 pF
Table 10: DC characteristics for signals on the VDD15 power plane, AGP 2.0 signaling.
Symbol Parameter Description Min Max Units Comments
V
IL
Input low voltage -0.3 V
REFI
- 0.1 V
V
IH
Input high voltage V
REFI
+ 0.1 VDD15 + 0.3 V
V
OL
Output low voltage; I
OUT
= 1.5 mA 0.05 V
V
OH
Output high voltage; 50 ohm load to
ground
0.750 0.850 V
V
REFI
Input reference voltage on A_REFGC 0.34 0.36 V
V
REFO
Output reference voltage on A_REFCG 0.226 VDD15 0.240 VDD15 V
C
DIE
Input die capacitance 8 pF
Z
TERM
Terminator equivalent impedance; V
OH
=
0.8V; Z
TARG
= 50 Ohm
45 55 Ohms
Z
PU
Pull-up equivalent impedance; V
OH
=
0.8V; Z
TARG
= 50 Ohm
39.3 46.2 Ohms
Table 11: DC characteristics for signals on the VDD15 power plane, AGP 3.0 signaling.
