LM3S9B90_11 Datasheet, PDF (518/1295 Pages) Texas Instruments – LM3S9B90 Microcontroller

External Peripheral Interface (EPI)
Bit/Field
1:0
Name
MODE
Type
R/W
Reset
0x0
Description
Host Bus Sub-Mode
This field determines which of four Host Bus 8 sub-modes to use.
Sub-mode use is determined by the connected external peripheral. See
Table 10-5 on page 491 for information on how this bit field affects the
operation of the EPI signals.
Value Description
0x0 ADMUX – AD[7:0]
Data and Address are muxed.
0x1 ADNONMUX – D[7:0]
Data and address are separate.
0x2 Continuous Read - D[7:0]
This mode is the same as ADNONMUX, but uses address switch
for multiple reads instead of OEn strobing.
0x3 XFIFO – D[7:0]
This mode adds XFIFO controls with sense of XFIFO full and
XFIFO empty. This mode uses no address or ALE.
518
March 19, 2011
Texas Instruments-Advance Information