24888 Rev 3.03 - July 12, 2004 AMD-8151
TM
AGP Tunnel Data Sheet
37
6.4 AC Characteristics
See the HyperTransport Technology Electrical Specification for the AC characteristics of link signals.
The following table shows AC specification data for clocks.
The following table shows AC specification data for common clock (A_PCLK) operation of AGP signals.
Symbol Parameter Description Min Max Units Comments
t
REF
REFCLK cycle time 15 18 ns
t
CYC
A_PCLK cycle time 15 ns Matches REFCLK
t
HIGH
A_PCLK high time 6 ns
t
LOW
A_PCLK low time 6 ns
t
SLEW
A_PCLK slew rate 1 4 V/ns
Table 12: AC data for clocks.
Symbol Parameter Description Min Max Units Notes
t
VAL
A_PCLK to signal valid delay 1 5.5 ns
t
ON
A_PCLK to signal float-to-active delay 1 6 ns
t
OFF
A_PCLK to signal active-to-float delay 1 14 ns
t
SU
Signal input setup time to A_PCLK 6 ns
t
H
AGP signal input hold time after A_PCLK 0 ns
t
RF
Signal output rise and fall slew rate 2 3.5 V/ns
Table 13: AC data for common clock operation of AGP signals.
