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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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TMS320VC5507 датащи(PDF) 26 Page - Texas Instruments |
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TMS320VC5507 датащи(HTML) 26 Page - Texas Instruments |
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26 / 108 page  SM320VC5507-EP SPRS613 – SEPTEMBER 2009 www.ti.com 3.2.5 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 • I2C 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 5507 always starts execution from the on-chip ROM following a hardware reset. A summary of boot configurations is shown in Table 3-3. For more information on using the bootloader, see the Using the TMS320VC5503/VC5507/VC5509/VC5509A Bootloader application report (literature number SPRA375). Table 3-3. Boot Configuration Summary GPIO0 GPIO3 GPIO2 GPIO1 BOOT MODE PROCESS 0 0 0 0 Reserved 0 0 0 1 Serial (SPI) EPROM Boot (24-bit address) via McBSP0 0 0 1 0 USB 0 0 1 1 I2C EEPROM (7-bit address) 0 1 0 0 Reserved 0 1 0 1 HPI – multiplexed mode 0 1 1 0 HPI – nonmultiplexed mode 0 1 1 1 Reserved 1 0 0 0 Execute from 16-bit-wide asynchronous memory (on CE1 space) 1 0 0 1 Serial (SPI) EPROM Boot (16-bit address) via McBSP0 1 0 1 0 8-bit asynchronous memory (on CE1 space) 1 0 1 1 16-bit asynchronous memory (on CE1 space) 1 1 0 0 Reserved 1 1 0 1 Reserved 1 1 1 0 Standard serial boot via McBSP0 (16-bit data) 1 1 1 1 Standard serial boot via McBSP0 (8-bit data) 3.3 Peripherals The 5507 supports the following peripherals: • A configurable parallel external interface supporting either: – 16-bit external memory interface (EMIF) for asynchronous memory and/or SDRAM – 16-bit enhanced host-port interface (HPI) • A six-channel direct memory access (DMA) controller • A programmable phase-locked loop clock generator • Two 20-bit timers • Watchdog timer • Three multichannel buffered serial ports (McBSPs) • Eight configurable general-purpose I/O pins x 26 Functional Overview Copyright © 2009, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): SM320VC5507-EP |
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