LM3S1621 Datasheet, PDF (901/947 Pages) Texas Instruments – ARM and Thumb are registered trademarks and Cortex is a trademark

Stellaris^® LM3S1621 Microcontroller
Figure 21-20. General-Purpose Mode Read and Write Timing
Clock
(EPI0S31)
Frame
(EPI0S30)
RD
(EPI0S29)
WR
(EPI0S28)
Address
Data
E25
E27
E30
E28
Data
E29
Read
E30
E31
Data
Write
The above figure illustrates accesses where the FRM50 bit is clear, the FRMCNT field is 0x0, the
RD2CYC bit is clear, and the WR2CYC bit is clear.
Figure 21-21. General-Purpose Mode iRDY Timing
Clock
(EPI0S31)
Frame
(EPI0S30)
E32
E32
RD
(EPI0S29)
iRDY
(EPI0S27)
Address
Data
January 21, 2012
901
Texas Instruments-Production Data