Texas-instruments TMS320C6712D Bedienungsanleitung PDF herunterladen (Seite 79)

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SPRS293A − OCTOBER 2005 − REVISED NOVEMBER 2005

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

SYNCHRONOUS DRAM TIMING (CONTINUED)

ECLKOUT

CE[3:0]

BE[1:0]

EA[21:13]

ED[15:0]

EA12

AOE/SDRAS/SSOE

†

ARE

/SDCAS/SSADS

†

AWE

/SDWE/SSWE

†

EA[11:2]

Bank

DEAC

†

ARE

/SDCAS/SSADS, AWE/SDWE/SSWE, and AOE/SDRAS/SSOE operate as SDCAS, SDWE, and SDRAS, respectively, during SDRAM

accesses.

Figure 34. SDRAM DEAC Command

ECLKOUT

CE[3:0]

BE[1:0]

EA[21:2]

ED[15:0]

EA12

AOE

/SDRAS/SSOE

†

ARE

/SDCAS/SSADS

†

AWE

/SDWE/SSWE

†

REFR

†

ARE

/SDCAS/SSADS, AWE/SDWE/SSWE, and AOE/SDRAS/SSOE operate as SDCAS, SDWE, and SDRAS, respectively, during SDRAM

accesses.

Figure 35. SDRAM REFR Command

1 2 ... 74 75 76 77 78 79 80 81 82 83 84 ... 101 102

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