TMS320C6421 datasheet(26/59 Pages) TI

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TMS320C6421

Fixed-Point Digital Signal Processor

SPRS346A – JANUARY 2007 – REVISED MARCH 2007

Table 2-12. EMIFA Terminal Functions (EMIFA Pinout Mode 2, AEM[2:0] = 010) (continued)

SIGNAL

TYPE(1)

OTHER(2)(3)

DESCRIPTION

ZWT

ZDU

NAME

NO.

This pin is multiplexed between EMIFA (NAND) and GPIO.

For EMIFA (NAND), this pin is Chip Select 3 output EM_CS3 for use

with NAND flash.

EM_CS3/

IPD

C18

D22

I/O/Z

GP[13]

DVDD33

Note: This pin features an internal pulldown (IPD). If this pin is

connected and used as an EMIFA chip select signal, for proper device

operation, an external pullup resistor must be used to ensure the

EM_CSx function defaults to an inactive (high) state.

This pin is multiplexed between EMAC (RMII), EMIFA (NAND), and

GPIO.

For EMIFA (NAND), it is Chip Select 4 output EM_CS4 for use with

RMRXD0/

IPD

NAND flash.

EM_CS4/

E19

H22

I/O/Z

DVDD33

GP[32]

Note: This pin features an internal pulldown (IPD). If this pin is

connected and used as an EMIFA chip select signal, for proper device

operation, an external pullup resistor must be used to ensure the

EM_CSx function defaults to an inactive (high) state.

This pin is multiplexed between EMAC (RMII), EMIFA (NAND), and

GPIO.

For EMIFA (NAND), it is Chip Select 5 output EM_CS5 for use with

RMRXD1/

IPD

NAND flash.

EM_CS5/

F19

J22

I/O/Z

DVDD33

GP[33]

Note: This pin features an internal pulldown (IPD). If this pin is

connected and used as an EMIFA chip select signal, for proper device

operation, an external pullup resistor must be used to ensure the

EM_CSx function defaults to an inactive (high) state.

EM_D0/

IPD

D16

E21

I/O/Z

GP[14]

DVDD33

EM_D1/

IPD

D18

G20

I/O/Z

GP[15]

DVDD33

EM_D2/

IPD

D17

E22

I/O/Z

GP[16]

DVDD33

EM_D3/

IPD

These pins are multiplexed between EMIFA (NAND) and GPIO.

E16

F20

I/O/Z

GP[17]

DVDD33

For EMIFA (NAND) (AEM[2:0] = 010), these pins are the 8-bit

EM_D4/

IPD

E18

G21

I/O/Z

bi-directional data bus (EM_D[7:0]).

GP[18]

DVDD33

EM_D5/

IPD

E17

F22

I/O/Z

GP[19]

DVDD33

EM_D6/

IPD

F16

F21

I/O/Z

GP[20]

DVDD33

EM_D7/

IPD

F17

H20

I/O/Z

GP[21]

DVDD33

Device Overview

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