wiki:nightowl:buscycle
Differences
This shows you the differences between two versions of the page.
| Both sides previous revision Previous revision Next revision | Previous revision | ||
|
wiki:nightowl:buscycle [2018/08/09 15:03] gtfjt |
wiki:nightowl:buscycle [2018/08/10 23:06] (current) gtfjt |
||
|---|---|---|---|
| Line 12: | Line 12: | ||
| Notes: | Notes: | ||
| - | - Assert /ACK once per bus transaction when first data word available. | + | - Assert /ACK once per bus transaction for both reads and writes after data address selection is complete. |
| - | - Assert /RdCEn once per data word in burst. | + | - Assert /RdCEn once per data word in read burst. First assertion of /RdCEn is coincident with /Ack. Subsequent assertions of /RdCEn are timed using a (usually) shorter wait-state count than the initial access. |
| + | |||
| + | ===== Wait-State Generation ===== | ||
| + | |||
| + | * DSA = DSB ⇐ ALE ∥ FB | ||
| + | * CP ⇐ !/SysClk | ||
| + | * /MR ⇐ !(/Rd & /Wr) | ||
| + | * /BusErr ⇐ !Q7 | ||
wiki/nightowl/buscycle.1533841390.txt.gz · Last modified: 2018/08/09 15:03 by gtfjt
Page Tools
