Intel 21555 - SROM Check Status Timing Diagram; SROM Erase Timing Diagram; SROM Erase All Operation

21555 Non-Transparent PCI-to-PCI Bridge User Manual 95
Serial ROM Interface
Figure 22. SROM Erase Timing Diagram
Figure 23. SROM Erase All Operation
Figure 24. SROM Check Status Timing Diagram
A7479-01
A8 A0
111
pr_ad[1]
(sr_di)
sr_cs
pr_ad[0]
(sr_ck)
A7480-01
1100 0
pr_ad[1]
(sr_di)
sr_cs
pr_ad[0]
(sr_ck)
A7481-01
pr_ad[2]
(sr_di)
sr_cs
pr_ad[0]
(sr_ck)
ready
busy