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TMS320VC5504 Datasheet(PDF) 39 Page - Texas Instruments

Part # TMS320VC5504
Description  Fixed-Point Digital Signal Processor
PDF  123 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TMS320VC5504 Datasheet(HTML) 39 Page - Texas Instruments

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CLKSEL =1
?
InternalConfiguration
SetupPLL to
x375
Start Timer0toCount
200ms
NORBoot
?
Yes
NANDBoot
?
Yes
No
16-bitSPI
EEPROM
Boot
?
Yes
No
I2CBoot
?
Yes
MMC/SD0Boot
(NotSupported)
?
No
UART Boot
(NotSupported)
?
USBBoot
(NotSupported)
?
SetRegister
Configuration
CopyBoot
ImageSections
toSystem
Memory
Has Timer0
CounterExpired
?
No
Yes
JumptoStored
ExecutionPoint
No
Yes
No
TMS320VC5504
www.ti.com
SPRS609B – JUNE 2009 – REVISED JANUARY 2010
Figure 4-1. Bootloader Software Architecture
4.4.1
Boot Modes
The VC5504 DSP supports the following boot modes in the following device order: NOR Flash, NAND
Flash, 16-bit SPI EEPROM, and I2C EEPROM. The boot mode is determined by checking for a valid boot
signature on each supported boot device. The first boot device with a valid boot signature will be used to
load and execute the user code. If none of the supported boot devices have a valid boot signature, the
Bootloader goes into an endless loop checking the unsupported UART and USB boot modes and the
device must be reset to look for another valid boot image in the supported boot modes.
4.4.2
Boot Configuration
After reset, the on-chip Bootloader programs the system clock generator based on the input clock selected
via the CLK_SEL pin. If CLK_SEL = 0, the Bootloader programs the system clock generator and sets the
system clock to 12.288 MHz (multiply the 32.768-KHz RTC oscillator clock by 375). If CLK_SEL = 1, the
Bootloader bypasses the system clock generator altogether and the system clock is driven by the CLKIN
pin.
Copyright © 2009–2010, Texas Instruments Incorporated
Device Configuration
39
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Product Folder Link(s): TMS320VC5504



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