Texas-instruments TMS320C6454 Instrukcja Użytkownika Pobierz pdf (Strona 154)

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PRODUCT PREVIEW

AECLKOUT

ACEx

ABE[7:0]

AEA[19:0]/

ABA[1:0]

AED[63:0]

AAOE/ASOE

(A)

AR/W

AAWE/ASWE

(A)

AARDY

(B)

Byte Enables

Address

Write Data

Hold = 1

Strobe = 4

Setup = 1

A AAOE/ASOE and AAWE/ASWE operate as AAOE (identified under select signals) and AAWE, respectively, during asynchronous memory

accesses.

B Polarity of the AARDY signal is programmable through the AP field of the EMIFA Async Wait Cycle Configuration register (AWCC).

DEASSERTED

AECLKOUT

AARDY

(A)

ASSERTED DEASSERTED

Strobe

Hold = 2Extended Strobe

Strobe

Setup = 2

A Polarity of the AARDY signal is programmable through the AP field of the EMIFA Async Wait Cycle Configuration register (AWCC).

TMS320C6454

Fixed-Point Digital Signal Processor

SPRS311A – APRIL 2006 – REVISED DECEMBER 2006

Figure 7-34. Asynchronous Memory Write Timing for EMIFA

Figure 7-35. AARDY Timing

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Texas-instruments TMS320C6454 Instrukcja Użytkownika Strona 154