TMS320DM643 datasheet(32/162 Pages) TI

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TMS320DM643

Video/Imaging Fixed-Point Digital Signal Processor

SPRS269C – FEBRUARY 2005 – REVISED JANUARY 2007

Table 2-4. Terminal Functions (continued)

SIGNAL

IPD/

TYPE(1)

DESCRIPTION

IPU(2)

NAME

NO.

EMIFA (64-bit) – ADDRESS

AEA22

U23

AEA21

V24

EMIFA external address (doubleword address)

EMIFA address numbering for the DM643 device starts with AEA3 to maintain

AEA20

V25

signal name compatibility with other C64x™ devices (e.g., C6414, C6415, and

AEA19

V26

C6416) [see the 64-bit EMIF addressing scheme in the TMS320C6000 DSP

External Memory Interface (EMIF) Reference Guide (literature number

AEA18

V23

SPRU266)].

AEA17

U24

Note: If a configuration pin must be routed out from the device, the internal

AEA16

U25

pullup/pulldown (IPU/IPD) resistor should not be relied upon; TI recommends the

AEA15

U26

use of an external pullup/pulldown resistor.

AEA14

T24

Boot Configuration:

AEA13

T25

•

Controls initialization of DSP modes at reset (I) via pullup/pulldown resistors

O/Z

IPD

–

Boot mode (AEA[22:21]):

AEA12

R23

00 - No boot (default mode)

AEA11

R24

01 - HPI boot

10 - Reserved

AEA10

P23

11 - EMIFA 8-bit ROM boot

AEA9

P24

–

EMIF clock select AEA[20:19]:

AEA8

P26

Clock mode select for EMIFA (AECLKIN_SEL[1:0])

00 - AECLKIN (default mode)

AEA7

N23

01 - CPU/4 Clock Rate

AEA6

N24

10 - CPU/6 Clock Rate

11 - Reserved

AEA5

N26

For more details, see the Device Configurations section of this data sheet.

AEA4

M23

AEA3

M24

Device Overview

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