Advanced 266 Fsb Amd Athlon System Bus Ac Characteristics - AMD ATHLON 8 Datasheet

25175H—March 2003
6.3 Advanced 266 FSB AMD Athlon™ System Bus
AC Characteristics
Table 4. AMD Athlon™ System Bus AC Characteristics
Group Symbol
T
RISE
All Signals
T
FALL
T
SKEW-SAMEEDGE
T
SKEW-DIFFEDGE
Forward
T
SU
Clocks
T
HD
C
IN
C
OUT
T
VAL
T
Sync
SU
T
HD
Notes:
1. Rise and fall time ranges are guidelines over which the I/O has been characterized.
2. T is the maximum skew within a clock forwarded group between any two signals or between any signal and its
SKEW-SAMEEDGE
forward clock, as measured at the package, with respect to the same clock edge.
T is the maximum skew within a clock forwarded group between any two signals or between any signal and its
SKEW-DIFFEDGE
forward clock, as measured at the package, with respect to different clock edges.
3. Input SU and HD times are with respect to the appropriate Clock Forward Group input clock.
4. The synchronous signals include
5. T is RSTCLK rising edge to output valid for PROCRDY. Test Load is 25 pF.
VAL
6. T is setup of CONNECT/CLKFWDRST to rising edge of RSTCLK. T
SU
RSTCLK.
Chapter 6 Advanced 266 Front-Side Bus AMD Athlon™ XP Processor Model 8 Specifications
Preliminary Information
The AC characteristics for the AMD Athlon system bus of this
processor are shown in Table 4. The parameters are grouped
based on the source or destination of the signals involved.
Parameter
Output Rise Slew Rate
Output Fall Slew Rate
Output skew with respect to
the same clock edge
Output skew with respect to a
different clock edge
Input Data Setup Time
Input Data Hold Time
Capacitance on input Clocks
Capacitance on output Clocks
RSTCLK to Output Valid
Setup to RSTCLK
Hold from RSTCLK
PROCRDY, CONNECT, and CLKFWDRST.
AMD Athlon™ XP Processor Model 8 Data Sheet
Min
1
1
–
–
300
300
4
4
250
500
1000
is hold of CONNECT/CLKFWDRST from rising edge of
HD
Max Units Notes
3 V/ns 1
3 V/ns 1
385 ps 2
770 ps 2
ps 3
ps 3
25 pF
12 pF
2000 ps 4, 5
ps 4, 6
ps 4, 6
25