Texas Instruments TMS320C6712D Configuration GDP/ZDP Functional Description PIN, Emifbe, Lendian

Models: TMS320C6712D

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SPRS293A − OCTOBER 2005 − REVISED NOVEMBER 2005

 

 

 

 

 

 

 

 

 

 

 

 

Table 14. Device Configurations Pins at Device Reset

 

 

 

 

(LENDIAN, EMIFBE, BOOTMODE[1:0], and CLKMODE0)

 

 

 

 

 

 

 

 

 

 

 

CONFIGURATION

GDP/ZDP

 

 

FUNCTIONAL DESCRIPTION

 

 

PIN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EMIF Big Endian mode correctness

 

 

 

 

 

 

 

(EMIFBE)

 

 

 

 

 

 

When Big Endian mode is selected (LENDIAN = 0), for proper device operation the

 

 

 

 

 

EMIFBE pin must be externally pulled low.

 

 

EMIFBE

C15

 

 

 

 

 

 

 

 

 

 

 

 

This new functionality does not affect systems using the current default value of C15 pin=1. For

 

 

 

 

 

more detailed information on the Big Endian mode correctness, see the EMIF Big Endian Mode

 

 

 

 

 

Correctness portion of this data sheet.

 

 

 

 

 

 

 

 

 

 

 

Device Endian mode (LEND)

 

 

 

 

 

0

System operates in Big Endian mode.

 

LENDIAN

B17

 

 

The EMIFBE pin must be pulled low.

 

 

 

 

 

1

System operates in Little Endian mode (default)

 

 

 

 

 

 

 

 

 

 

 

Bootmode Configuration Pins (BOOTMODE)

 

 

 

 

 

00 – Emulation boot

 

 

 

 

 

01 – CE1 width 8-bit, Asynchronous external ROM boot with default

 

 

 

 

 

 

 

timings (default mode)

 

BOOTMODE[1:0]

C19, C20

10 −

CE1 width 16-bit, Asynchronous external ROM boot with default

 

 

 

timings

 

 

 

 

 

 

 

 

 

 

 

 

11 −

Reserved, do not use

 

 

 

 

 

For more detailed information on these bootmode configurations, see the bootmode section of

 

 

 

 

 

this data sheet.

 

 

 

 

 

 

 

 

 

 

 

Clock generator input clock source select

 

 

 

 

 

0

Reserved. Do not use.

 

CLKMODE0

C4

1

CLKIN square wave [default]

 

 

 

 

 

 

 

 

 

 

 

For proper device operation, this pin must be either left unconnected or externally pulled up

 

 

 

 

 

with a 1-kresistor.

 

POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443

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Texas Instruments TMS320C6712D Configuration GDP/ZDP Functional Description PIN, Emifbe, Lendian, BOOTMODE10, CLKMODE0