Datasheet

Table 11-8. EPI Host-Bus 8 Signal Connections (continued)
HB8 Signal (MODE
=XFIFO)
HB8 Signal (MODE
=ADNOMUX (Cont.
Read))
HB8 Signal (MODE
=ADMUX)
CSCFGEPI Signal
XXX0x0
EPI0S33
XXX0x1
XXX0x2
XXX0x3
XXX0x4
X
CS3nCS3n
0x5
X0x6
XXX0x0
EPI0S34
XXX0x1
XXX0x2
XXX0x3
XXX0x4
X
CS2nCS2n
0x5
X0x6
XXX0x0
EPI0S35
XXX0x1
XXX0x2
XXX0x3
XXX0x4
X
CRECRE
0x5
X0x6
a. "X" indicates the state of this field is a don't care.
b. When an entry straddles several row, the signal configuration is the same for all rows.
c. The clock signal is not required for this mode.
Table 11-9 on page 864 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 EPIHB16CFGn register, on the chip select configuration selected by the CSCFG and
CSCFGEXT 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 11-9. EPI Host-Bus 16 Signal Connections
HB16 Signal
(MODE
=XFIFO)
HB16 Signal (MODE
=ADNOMUX (Cont.
Read))
HB16 Signal (MODE
=ADMUX)
BSELCSCFGEPI Signal
D0D0AD0
b
XX
a
EPI0S0
D1D1AD1XXEPI0S1
D2D2AD2XXEPI0S2
D3D3AD3XXEPI0S3
December 13, 2013864
Texas Instruments-Advance Information
External Peripheral Interface (EPI)