AMD Geode™ SC2200 Processor Data Book 389
Electrical Specifications 32580B
Figure 9-8. ACB Signals: Rising Time and Falling Timing DiagramFigure 9-9. ACB Start and Stop Condition Timing Diagram
tSDAfo AB1D/AB2D signal fall
time
300 ns
tSDAro AB1D/AB2D signal rise
time
1μs
tSDAho AB1D/AB2D hold time 7 * tCLK - tSCLfo After AB1C/AB2C falling edge
tSDAvo AB1D/AB2D valid time 7 * tCLK + tRD After AB1C/AB2C falling edge
Note 1. K is determined by bits [7:1] of the ACBCTL2 register (LDN 05h/06h, Offset 05h).
Note 2. tSCLhigho value depends on the signal capacitance and the pull-up value of the relevant pin.
Table 9-17. ACCESS.bus Output Timing Parameters (Continued)
Symbol Parameter Min Max Unit Comments
AB1D
tSDAr
0.7VIO
0.3VIO
tSDAf
0.7VIO
0.3VIO
AB1C
tSCLr
0.7VIO
0.3VIO
tSCLf
0.7VIO
0.3VIO
AB2D
AB2C
AB1D
AB1C
tCSTOsi tBUFi
tDLCs
tCSTRhi
Start Condition
Stop Condition
tDLCo
tCSTOso tBUFo tCSTRho
AB2D
AB2C