AMD-762 datasheet(77/122 Pages) AMD

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Chapter 4

Electrical Data

24416C—December 2001

AMD-762™ System Controller Data Sheet

Preliminary Information

Figure 21.

AGP 2x Strobe/Data Turnaround Timings

Table 24.

AGP 4x Mode Timings*

Symbol

Parameter Description

Preliminary Data

Figure

Notes

Min

Max

Transmitter Output Signals

tTSf

CLK to First Transmit Strobe

Transition

1.9 ns

8 ns

tTSr

CLK to Fourth Transmit Strobe

Transition

20 ns

tDvb

Data Valid Before Strobe

–0.95 ns

tDva

Data Valid After Strobe

1.15 ns

tONd

Float to Active Delay

–1 ns

7 ns

tOFFd

Active to Float Delay

1 ns

14 ns

tONS

Strobe Active to First Strobe Edge Setup

4 ns

9 ns

tOFFS

Last Strobe Edge to Strobe Float Delay

4 ns

9 ns

Receiver Input Signals

tRSsu

Receive Strobe Setup Time to CLK

6 ns

tRSh

Receive Strobe Hold Time from CLK

0.5 ns

tDsu

Data to Strobe Setup Time

0.40 ns

tDhld

Strobe to Data Hold Time

0.70 ns

Note:

* This table contains preliminary information, which is subject to change.

1. These specifications refer to the setup and hold times for the strobe set started in the previous cycle.

AGPCLK

Strobe

tfd

tONd

tOFFS

tONS

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