LM3S5G31 Datasheet, PDF (489/1223 Pages) Texas Instruments – Stellaris LM3S5G31 Microcontroller

Stellaris^® LM3S5G31 Microcontroller
Table 10-6 on page 489 shows how the EPI[31:0] signals function while in Host-Bus 16 mode.
Notice that the signal configuration changes based on the address/data mode selected by the MODE
field in the EPIHB16CFG2 register, on the chip select configuration selected by the CSCFG field in
the same register, and on whether byte selects are used as configured by the BSEL bit in the
EPIHB16CFG register.
Although the EPI0S31 signal can be configured for the EPI clock signal in Host-Bus mode, it is not
required and should be configured as a GPIO to reduce EMI in the system. Any unused EPI controller
signals can be used as GPIOs or another alternate function.
Table 10-6. EPI Host-Bus 16 Signal Connections
EPI Signal
CSCFG
BSEL
HB16 Signal (MODE
=ADMUX)
EPI0S0
EPI0S1
EPI0S2
EPI0S3
EPI0S4
EPI0S5
EPI0S6
EPI0S7
EPI0S8
EPI0S9
EPI0S10
EPI0S11
EPI0S12
EPI0S13
EPI0S14
EPI0S15
EPI0S16
EPI0S17
EPI0S18
EPI0S19
EPI0S20
EPI0S21
EPI0S22
EPI0S23
X^a
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X^c
0
1
AD0^b
AD1
AD2
AD3
AD4
AD5
AD6
AD7
AD8
AD9
AD10
AD11
AD12
AD13
AD14
AD15
A16
A17
A18
A19
A20
A21
A22
A23
HB16 Signal (MODE
=ADNOMUX (Cont.
Read))
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
D14
D15
A0^b
A1
A2
A3
A4
A5
A6
HB16 Signal
(MODE =XFIFO)
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
D14
D15
-
-
-
-
-
-
-
A7
-
July 03, 2014
489
Texas Instruments-Production Data