TMS570LS1114 datasheet(32/169 Pages) TI1

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TMS570LS1114

SPNS188B – OCTOBER 2012 – REVISED FEBRUARY 2015

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4.3.2.13 External Memory Interface (EMIF)

Table 4-32. External Memory Interface (EMIF)

Terminal

Signal

Reset Pull

Pull Type

Description

Type

State

Signal Name

337

ZWT

EMIF_CKE

Output

Pull Up

None

EMIF Clock Enable

EMIF_CLK

I/O

None

EMIF clock. This is an

output signal in functional

mode. It is gated off by

default, so that the signal

is pulled up. PINMUX29[8]

must be cleared to enable

this output.

EMIF_nOE

E12

Output

Pull Up

None

EMIF Read Enable

EMIF_nWAIT

I/O

Pull Up

Fixed 20 µA

EMIF Extended Wait

Pull Up

Signal

EMIF_nWE

D17

Output

Pull Up

None

EMIF Write Enable

EMIF_nCAS

Output

EMIF column address

strobe

EMIF_nRAS

Output

EMIF row address strobe

EMIF_nCS[0]/N2HET2[7](1)

N17

Output

EMIF chip select,

synchronous

EMIF_nCS[2]

L17

Output

EMIF chip selects,

asynchronous

EMIF_nCS[3]/N2HET2[9](1)

K17

Output

This applies to chip

EMIF_nCS[4]

M17

Output

selects 2, 3 and 4

EMIF_nDQM[0]

E10

Output

EMIF Data Mask or Write

Strobe.

EMIF_nDQM[1]

E11

Output

Data mask for SDRAM

devices, write strobe for

connected asynchronous

devices.

EMIF_BA[0]

E13

Output

EMIF bank address or

address line

EMIF_BA[1]/N2HET2[5](1)

D16

Output

EMIF bank address or

address line

EMIF_ADDR[0]/N2HET2[1](1)

Output

EMIF address

EMIF_ADDR[1]/N2HET2[3](1)

Output

EMIF_ADDR[2]

Output

EMIF_ADDR[3]

Output

EMIF_ADDR[4]

Output

EMIF_ADDR[5]

Output

EMIF_ADDR[6]/N2HET2[11](1)

Output

EMIF_ADDR[7]/N2HET2[13](1)

Output

EMIF_ADDR[8]/N2HET2[15](1)

Output

EMIF_ADDR[9]

Output

EMIF_ADDR[10]

Output

EMIF_ADDR[11]

Output

EMIF_ADDR[12]

C10

Output

(1)

These signals are tri-stated and pulled up by default after power-up. Any application that requires the EMIF must set the bit 31 of the

system module general-purpose register GPREG1.

Terminal Configuration and Functions

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