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TMS320F bảng dữ liệu(PDF) 38 Page - Texas Instruments

tên linh kiện TMS320F
Giải thích chi tiết về linh kiện  CPU and Instruction Set
PDF  389 Pages
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TMS320F bảng dữ liệu(HTML) 38 Page - Texas Instruments

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Program Memory
3-5
Memory and I/O Spaces
3.2.1
Program Memory Configuration
Depending on which types of memory are included in a particular ’C24x de-
vice, two factors contribute to the configuration of program memory:
- CNF bit. The CNF bit (bit 12) of status register ST1 determines whether
the addresses for DARAM B0 are available for program space:
J CNF = 0. There is no addressable on-chip program DARAM.
J CNF = 1. The 256 words of DARAM B0 are configured for program
use. At reset, any words of program/data DARAM are mapped into lo-
cal data space (CNF = 0).
- MP/MC pin. The level on the MP/MC pin determines whether program
instructions are read from on-chip ROM or flash EEPROM (if available) af-
ter reset:
J MP/MC = 0. The device is configured as a microcomputer. The on-
chip ROM/flash EEPROM is accessible. The device fetches the reset
vector from on-chip memory.
J MP/MC = 1. The device is configured as a microprocessor. The device
fetches the reset vector from external memory.
Regardless of the value of MP/MC, the ’C24x fetches its reset vector at
location 0000h of program memory.



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