Functional Overview

November 2002 − Revised January 2005SPRS205D

3.11.2 Interrupt Timing

The external interrupts (INT[4:0]) are synchronized to the CPU by way of a two-flip-flop synchronizer. The

interrupt inputs are sampled on falling edges of the CPU clock. A sequence of 1-1-0-0-0 on consecutive cycles

on the interrupt pin is required for an interrupt to be detected. Therefore, the minimum low pulse duration on

the external interrupts on the 5509A is three CPU clock periods.

3.11.3 Waking Up From IDLE Condition

One of the following four events can wake up the CPU from IDLE:

• Hardware Reset

• External Interrupt

• RTC Interrupt

• USB Event (Reset or Resume)

3.11.3.1 Waking Up From IDLE With Oscillator Disabled

With an external interrupt, a RTC interrupt, or an USB resume/reset, the clock generation circuit wakes up the

oscillator and enables the USB PLL to determine the oscillator stable time. In the case of the interrupt being

disabled by clearing the associated bit in the Interrupt Enable Register (IERx), the CPU is not “woken up”. If

the interrupt due to the wake-up event is enabled, the interrupt is sent to the CPU only after the oscillator is

stabilized and the USB PLL is locked. If the external interrupt serves as the wake-up event, the interrupt line

must stay low for a minimum of 3 CPU cycles after the oscillator is stabilized to wake up the CPU. Otherwise,

only the clock domain will wake up and another external interrupt will be needed to wake up the CPU.

Once out of IDLE, any system not using the USB should put the USB module in idle mode to reduce power

consumption.

For more details on the TMS320VC5509A oscillator-disable process, see the Disabling the Internal Oscillator

on the TMS320VC5507/5509/5509A DSP Application Report (literature number SPRA078).

3.11.4 Idling Clock Domain When External Parallel Bus Operating in EHPI Mode

The clock domain cannot be idled when the External Parallel Bus is operating in EHPI mode to ensure host

access to the DSP memory. To work around this restriction, use the HIDL bit of the External Bus Selection

Support

November 2002 − Revised January 2005 SPRS205D

4 Support

4.1 Notices Concerning JTAG (IEEE 1149.1) Boundary Scan Test Capability

4.1.1 Initialization Requirements for Boundary Scan Test

The TMS320VC5509A uses the JTAG port for boundary scan tests, emulation capability and factory test

purposes. To use boundary scan test, the EMU0 and EMU1/OFF pins must be held HIGH through a rising edge

of the TRST signal prior to the first scan. This operation selects the appropriate TAP control for boundary scan.

If at any time during a boundary scan test a rising edge of TRST occurs when EMU0 or EMU1/OFF are not

high, a factory test mode may be selected preventing boundary scan test from being completed. For this

reason, it is recommended that EMU0 and EMU1/OFF be pulled or driven high at all times during boundary

scan test.

4.1.2 Boundary Scan Description Language (BSDL) Model

BSDL models are available on the web in the TMS320VC5509A product folder under the “simulation models”

section.

4.2 Documentation Support

Extensive documentation supports all TMS320 DSP family of devices from product announcement through

applications development. The following types of documentation are available to support the design and use

of the TMS320C5000 platform of DSPs:

• TMS320C55x DSP Functional Overview (literature number SPRU312)

• Device-specific data sheets and data manuals

• Complete user’s guides

• Development support tools

• Hardware and software application reports

TMS320C55x reference documentation includes, but is not limited to, the following:

• TMS320C55x DSP CPU Reference Guide (literature number SPRU371)

• TMS320C55x DSP Mnemonic Instruction Set Reference Guide (literature number SPRU374)

• TMS320C55x DSP Algebraic Instruction Set Reference Guide (literature number SPRU375)

• TMS320C55x DSP Programmer’s Guide (literature number SPRU376)

• TMS320C55x DSP Peripherals Overview Reference Guide (literature number SPRU317)

• TMS320C55x Optimizing C/C++ Compiler User’s Guide (literature number SPRU281)

• TMS320C55x Assembly Language Tools User’s Guide (literature number SPRU280)

• TMS320C55x DSP Library Programmer’s Reference (literature number SPRU422)

• TMS320VC5507/5509 DSP Universal Serial Bus (USB) Module Reference Guide (literature number

SPRU596)

• TMS320C55x Hardware Extensions for Image/Video Applications Programmer’s Reference (literature

number SPRU098)

• TMS320C55x Image/Video Processing Library Programmer’s Reference (literature number SPRU037)

• Using the USB APLL on the TMS320VC5507/5509A Application Report (literature number SPRA997)

• Disabling the Internal Oscillator on the TMS320VC5507/5509/5509A DSP Application Report (literature

number SPRA078)

• Using the TMS320VC5503/VC5507/VC5509/VC5509A Bootloader Application Report (literature

number SPRA375)

• TMS320VC5509A Power Consumption Summary Application Report (literature number SPRAA04)

• TMS320VC5509A Digital Signal Processor Silicon Errata (literature number SPRZ200)

TMS320 and TMS320C5000 are trademarks of Texas Instruments.

Support

November 2002 − Revised January 2005SPRS205D

The reference guides describe in detail the TMS320C55x DSP products currently available and the

hardware and software applications, including algorithms, for fixed-point TMS320 DSP family of devices.

A series of DSP textbooks is published by Prentice-Hall and John Wiley & Sons to support digital signal

processing research and education. The TMS320 DSP newsletter, Details on Signal Processing, is

published quarterly and distributed to update TMS320 DSP customers on product information.

Information regarding TI DSP products is also available on the Worldwide Web at http://www.ti.com uniform

resource locator (URL).

4.3 Device and Development-Support Tool Nomenclature

To designate the stages in the product development cycle, TI assigns prefixes to the part numbers of all DSP

devices and support tools. Each DSP commercial family member has one of three prefixes: TMX, TMP, or TMS

(e.g., TMS320C6412GDK600). Texas Instruments recommends two of three possible prefix designators for

its support tools: TMDX and TMDS. These prefixes represent evolutionary stages of product development

from engineering prototypes (TMX/TMDX) through fully qualified production devices/tools (TMS/TMDS).

Device development evolutionary flow:

TMX Experimental device that is not necessarily representative of the final device’s electrical specifications

TMP Final silicon die that conforms to the device’s electrical specifications but has not completed quality

and reliability verification

TMS Fully qualified production device

Support tool development evolutionary flow:

TMDX Development-support product that has not yet completed Texas Instruments internal qualification

testing.

TMDS Fully qualified development-support product

TMX and TMP devices and TMDX development-support tools are shipped against the following disclaimer:

“Developmental product is intended for internal evaluation purposes.”

TMS devices and TMDS development-support tools have been characterized fully, and the quality and

reliability of the device have been demonstrated fully. TI’s standard warranty applies.

Predictions show that prototype devices (TMX or TMP) have a greater failure rate than the standard

production devices. Texas Instruments recommends that these devices not be used in any production system

because their expected end-use failure rate still is undefined. Only qualified production devices are to be used.

Part #	TMS320VC5509APGE
Description	FIXED POINT DIGITAL SIGNAL PROCESSOR -DSP, 32 BIT, 200MHZ
Category	IC
Availability	Out of Stock
Qty	0

TMS320VC5509APGE

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