TMS320C32PCMA50 datasheet(9/45 Pages) TI

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TMS320C32

DIGITAL SIGNAL PROCESSOR

SPRS027C – JANUARY 1995 – REVISED DECEMBER 1996

POST OFFICE BOX 1443

• HOUSTON, TEXAS 77251–1443

external memory interface (continued)

D For 8-bit-wide physical memory, the STRBx_B2/A–2 and STRBx_B3/A–1 pins function as address pins

(least significant address bits) and the STRBx_B0 pin functions as a byte-enable (chip-select) pin.

STRBx_B1 is unused. See Figure 2.

8-Bit Data Bus

Data

A14

STRB0_B0

STRB0_B2/A –2

STRB0_B3/A –1

A13

A14

Data

STRB0_B1

A12

Figure 2. ’C32 With 8-Bit-Wide External Memory

D For 16-bit-wide physical memory, the STRBx_B3/A–1 pin functions as an address pin (least significant

address bits). The STRBx_B0 and STRBx_B1 pins function as byte-enable (chip-select) pins.

STRBx_B2/A–2 is unused. See Figure 3.

Data

A14

16-Bit Data Bus

Data

A14

STRB0_B0

STRB0_B1

STRB0_B3/A –1

A13

A14

Data

STRB0_B2 / A –2

Figure 3. ’C32 With 16-Bit-Wide External Memory

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