參數(shù)資料
型號： TMS320C6727B_07
廠商： Texas Instruments, Inc.
元件分類： 數(shù)字信號處理
英文描述： Floating-Point Digital Signal Processors
中文描述： 浮點數(shù)字信號處理器
文件頁數(shù)： 16/116頁
文件大小： 999K
代理商： TMS320C6727B_07
www.ti.com
2.8 Boot Modes
TMS320C6727B, TMS320C6726B, TMS320C6722B, TMS320C6720
Floating-Point Digital Signal Processors
SPRS370C–SEPTEMBER 2006–REVISED OCTOBER 2007
The C672x DSP supports only one hardware bootmode option, this is to boot from the internal ROM
starting at address 0x0000 0000. Other bootmode options are implemented by a software bootloader
stored in ROM. The software bootloader uses the CFGPIN0 and CFGPIN1 registers, which capture the
state of various device pins at reset, to determine which mode to enter. Note that in practice, only a few
pins are used by the software.
CAUTION
Only an externally applied RESET causes the CFGPIN0 and CFGPIN1 registers to
recapture their associated pin values. Neither an emulator reset nor a RTI reset
causes these registers to update.
The ROM bootmodes include:
Parallel Flash on EM_CS[2]
SPI0 or I2C1 master mode from serial EEPROM
SPI0 or I2C1 slave mode from external MCU
UHPI from an external MCU
Table 2-9
describes the required boot pin settings at device reset for each bootmode.
Table 2-9. Required Boot Pin Settings at Device Reset
BOOT MODE
UHPI_HCS
0
1
1
1
1
1
SPI0_SOMI
BYTEAD
(1)
0
0
0
1
1
SPI0_SIMO
FULL
(1)
1
0
1
0
1
SPI0_CLK
NMUX
(1)
0
1
1
1
1
UHPI
Parallel Flash
SPI0 Master
SPI0 Slave
I2C1 Master
I2C1 Slave
(1)
When UHPI_HCS is 0, the state of the SPI0_SOMI, SPI0_SIMO, and SPI0_CLK pins is copied into the specified bits in the CFGHPI
register described in
Table 4-14
.
Refer to the
C9230C100 TMS320C672x Floating-Point Digital Signal Processor ROM Data Manual
(literature number SPRS277) for details on supported bootmodes and their implementation.
Device Overview
16
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