Computer Hardware User's Guide

Programmable Wait States
9-11 TMS320C30 and TMS320C31 External-Memory Interface
Table 9–5. Wait-State Generation
Inputs Output
SWW Bit Field /RDYext /RDYwtcnt /RDYint Functional Description
00
0
1
x
x
0
1
Wait until external RDY is signaled
01 x
x
0
1
0
1
Wait until internal wait state generator
counts down to 0
10 0
0
1
1
0
1
0
1
0
0
0
1
Wait until first signal: external RDY or the
internal wait state generator (logical OR)
11 0
0
1
1
0
1
0
1
0
1
1
1
Wait until both external RDY is signaled
and wait state generator counts down to
0 (logical AND)