參數資料
型號: TMX320VC5509AGHH
廠商: Texas Instruments, Inc.
元件分類: 數字信號處理
英文描述: TMS320VC5509A Fixed-Point Digital Signal Processor
中文描述: TMS320VC5509A定點數字信號處理器
文件頁數: 36/144頁
文件大?。?/td> 1603K
代理商: TMX320VC5509AGHH
Functional Overview
36
November 2002 Revised January 2005
SPRS205D
3.1.5 Boot Configuration
The on-chip bootloader provides a method to transfer application code and tables from an external source to
the on-chip RAM memory at power up. These options include:
Enhanced host-port interface (HPI) in multiplexed or nonmultiplexed mode
External asynchronous memory boot (via the EMIF) from 8-bit-wide or 16-bit-wide memory
Serial port boot (from McBSP0) with 8-bit or 16-bit data length
Serial EPROM boot (from McBSP0) supporting EPROMs with 16-bit or 24-bit address
USB boot
I
2
C EEPROM
Direct execution from external 16-bit-wide asynchronous memory
External pins select the boot configuration. The values of GPIO[3:0] are sampled, following reset, upon
execution of the on-chip bootloader code. It is not possible to disable the bootloader at reset because the
5509A always starts execution from the on-chip ROM following a hardware reset. A summary of boot
configurations is shown in Table 33. For more information on using the bootloader, see the
Using the
TMS320VC5503/VC5507/VC5509/VC5509A Bootloader
Application Report (literature number SPRA375).
Table 33. Boot Configuration Summary
GPIO0
GPIO3
GPIO2
GPIO1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
BOOT MODE PROCESS
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
Reserved
Serial (SPI) EPROM Boot (24-bit address) via McBSP0
USB
I
2
C EEPROM (7-bit address)
Reserved
HPI – multiplexed mode
HPI – nonmultiplexed mode
Reserved
Execute from 16-bit-wide asynchronous memory (on CE1 space)
Serial (SPI) EPROM Boot (16-bit address) via McBSP0
8-bit asynchronous memory (on CE1 space)
16-bit asynchronous memory (on CE1 space)
Reserved
Reserved
Standard serial boot via McBSP0 (16-bit data)
Standard serial boot via McBSP0 (8-bit data)
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