SPRS439Q June 2007 – August 2022 TMS320F28232 , TMS320F28232-Q1 , TMS320F28234 , TMS320F28234-Q1 , TMS320F28235 , TMS320F28235-Q1 , TMS320F28332 , TMS320F28333 , TMS320F28334 , TMS320F28335 , TMS320F28335-Q1
PRODUCTION DATA
Refer to the PDF data sheet for device specific package drawings
If the XREADY signal is sampled in the synchronous mode (USEREADY = 1, READYMODE = 0), then:
1 | Lead: | LR ≥ tc(XTIM) | ||
LW ≥ tc(XTIM) | ||||
2 | Active: | AR ≥ 2 × tc(XTIM) | ||
AW ≥ 2 × tc(XTIM) |
Restriction does not include external hardware wait states.
These requirements result in the following XTIMING register configuration restrictions :
XRDLEAD | XRDACTIVE | XRDTRAIL | XWRLEAD | XWRACTIVE | XWRTRAIL | X2TIMING |
---|---|---|---|---|---|---|
≥ 1 | ≥ 2 | ≥ 0 | ≥ 1 | ≥ 2 | ≥ 0 | 0, 1 |
Examples of valid and invalid timing when using synchronous XREADY:
XRDLEAD | XRDACTIVE | XRDTRAIL | XWRLEAD | XWRACTIVE | XWRTRAIL | X2TIMING | |
---|---|---|---|---|---|---|---|
Invalid(1) | 0 | 0 | 0 | 0 | 0 | 0 | 0, 1 |
Invalid(1) | 1 | 0 | 0 | 1 | 0 | 0 | 0, 1 |
Valid | 1 | 2 | 0 | 1 | 2 | 0 | 0, 1 |