TMS320C6421 datasheet(19/59 Pages) TI

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TMS320C6421

Fixed-Point Digital Signal Processor

SPRS346A – JANUARY 2007 – REVISED MARCH 2007

Table 2-7. BOOT Terminal Functions (continued)

SIGNAL

TYPE(1)

OTHER(2)(3)

DESCRIPTION

ZWT

ZDU

NAME

NO.

EM_A[0]/

IPD

Selects EMIFA Pinout Mode

B17

C21

I/O/Z

GP[7]/(AEM2)

DVDD33

The C6421 supports the following EMIFA Pinout Modes:

EM_BA[0]/

IPD

C17

E20

I/O/Z

AEM[2:0] = 000, No EMIFA

GP[6]/(AEM1)

DVDD33

AEM[2:0] = 010, EMIFA (Async) Pinout Mode 2

AEM[2:0] = 101, EMIFA (NAND) Pinout Mode 5

EM_BA[1]/

IPD

C16

C20

I/O/Z

GP[5]/(AEM0)

DVDD33

This signal doesn't actually affect the EMIFA module. It only affects

how the EMIFA is pinned out.

For proper C6421 device operation, if this pin is both routed and

3-stated (not driven) during device reset, it must be pulled down via

IPD

RMTXD0/GP[28]

H16

J21

I/O/Z

an external resistor. For more detailed information on

DVDD33

pullup/pulldown resistors, see Section 3.2.1, Pullup/Pulldown

Resistors.

Endian selection

RMTXD1/GP[27]/

IPU

H17

L19

I/O/Z

0 = Big Endian

(LENDIAN)

DVDD33

1 = Little Endian

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