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TMS320C32PCMA50 датащи(PDF) 10 Page - Texas Instruments

номер детали TMS320C32PCMA50
подробное описание детали  DIGITAL SIGNAL PROCESSOR
PDF  45 Pages
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TMS320C32PCMA50 датащи(HTML) 10 Page - Texas Instruments

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TMS320C32
DIGITAL SIGNAL PROCESSOR
SPRS027C – JANUARY 1995 – REVISED DECEMBER 1996
10
POST OFFICE BOX 1443
• HOUSTON, TEXAS 77251–1443
external memory interface (continued)
D For 32-bit-wide physical memory, all STRB0 and STRB1 pins function as byte-enable (chip-select) pins.
See Figure 4.
STRB0_B2/A –2
CS
A14
A13
A2
A1
A0
Data
CS
Data
A14
A13
A2
A1
A0
STRB0_B3/A –1
CS
Data
A2
A13
A14
A0
A1
32-Bit Data Bus
CS
Data
A0
A1
A2
A13
A14
STRB0_B0
STRB0_B1
A0
A1
A2
A13
A14
Data
.
.
.
.
.
.
.
.
.
.
8
8
8
8
32
Figure 4. ’C32 With 32-Bit-Wide External Memory
For more detailed information and examples see
TMS320C32 Addendum to the TMS320C3x User’s Guide
(literature number SPRU132) and
Interfacing Memory to the TMS320C32 DSP Application Report (literature
number SPRA040).
D The IOSTRB control signal, like STRB0 and STRB1, also is mapped to a specific range of addresses but
it is a single signal that can access only 32-bit data from 32-bit-wide memory. Its range of addresses appears
in the TMS320C32 memory map, shown in Figure 8. The IOSTRB bus timing is different from the STRB0
and STRB1 bus timings to accommodate slower I/O peripherals.



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