TMS320C6421 datasheet(22/59 Pages) TI

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TMS320C6421

Fixed-Point Digital Signal Processor

SPRS346A – JANUARY 2007 – REVISED MARCH 2007

Table 2-11. EMIFA Terminal Functions (Boot Configuration)

SIGNAL

TYPE(1)

OTHER(2)(3)

DESCRIPTION

ZWT

ZDU

NAME

NO.

EMIFA: BOOT CONFIGURATION

EM_BA[1]/

IPD

These pins are multiplexed between the EMIFA, and GPIO. When

C16

C20

I/O/Z

GP[5]/(AEM0)

DVDD33

RESET or POR is asserted, these pins function as EMIFA

configuration pins. At reset, the input states of AEM[2:0] are sampled

EM_BA[0]/

IPD

C17

E20

I/O/Z

to set the EMIFA Pinout Mode. For more details, see , Configurations

GP[6]/(AEM1)

DVDD33

at Reset. After reset, these pins function as EMIFA or GPIO pin

functions based on pin mux selection.

EM_A[0]/

IPD

B17

C21

I/O/Z

For more details on the AEM functions, see , EMIFA Pinout Mode

GP[7]/(AEM2)

DVDD33

(AEM[2:0]).

(1)

I = Input, O = Output, Z = High impedance, S = Supply voltage, GND = Ground, A = Analog signal

(2)

IPD = Internal pulldown, IPU = Internal pullup. For more detailed information on pullup/pulldown resistors and situations where external

pullup/pulldown resistors are required, see Section 3.2.1, Pullup/Pulldown Resistors.

(3)

Specifies the operating I/O supply voltage for each signal.

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