TMS320C6745CPTPA3

Digital Signal Processor Dsp Overview

The TMS320C6745CPTPA3 is a fixed- and floating-point digital signal processor based on the C674x VLIW DSP core. It operates at maximum clock frequencies of 375 MHz (1.2V) or 456 MHz (1.3V). The architecture includes 32KB L1P cache, 32KB L1D cache, and 256KB unified L2 RAM/cache. Key peripherals include a 10/100 Mbps Ethernet MAC, two McASPs, three UARTs, two SPIs, two I2C interfaces, and EDMA3 with 32 channels. It supports USB 2.0 Full-Speed OTG and features three eHRPWM, three eCAP, and two eQEP modules. The device is housed in a 176-pin HLQFP package.

Digital Signal Processor Dsp Feature Summary

• C674x VLIW DSP Core: Up to 3648 MIPS and 2736 MFLOPS performance
• Memory Architecture: 32KB L1P, 32KB L1D, and 256KB L2 Unified Mapped RAM/Cache
• Connectivity: 10/100 Mbps EMAC, USB 2.0 OTG (Full-Speed), MMC/SD interface
• Peripherals: 3 UARTs, 2 SPIs, 2 I2Cs, 2 McASPs, PRUSS subsystem

Digital Signal Processor Dsp Applications

• A/V Receivers
• Automotive Amplifiers
• Soundbars
• Home Theatre Systems
• Professional Audio

Digital Signal Processor Dsp Procurement Notes

Verify the specific speed grade suffix (e.g., -3 for 375 MHz or -4 for 456 MHz) against system timing requirements. Confirm that the 176-pin PowerPAD package thermal dissipation meets the design's power budget. Ensure the voltage domain compatibility between the 1.2V/1.3V core and 3.3V I/O levels matches the board layout.

Digital Signal Processor Dsp Selection Notes

Select this component for applications requiring high-performance floating-point DSP capabilities with integrated connectivity. Compare against the TMS320C6747 if additional memory (128KB shared RAM), LCD controller, or USB High-Speed support is required. Verify peripheral multiplexing constraints if multiple serial interfaces are needed simultaneously.

Digital Signal Processor Dsp Part Context

This part belongs to the TMS320C674x family, which extends the C6000 platform with C67x+ floating-point and C64x+ fixed-point features. It is designed as a low-power alternative to previous C6000 DSPs. The CPTPA3 designation indicates the commercial temperature range and the 176-pin PTP package variant within the broader C6745 product line.

Digital Signal Processor Dsp Replacement Considerations

TMS320C6745DPTPA3 (Different speed grade/package variant)

Digital Signal Processor Dsp FAQ

What is the difference between the EMIFA and EMIFB interfaces?

EMIFA is an asynchronous interface supporting slower memories like NOR/NAND Flash and SRAM. EMIFB is a higher-speed synchronous interface specifically designed for connecting to SDRAM.

Does the TMS320C6745 support USB High-Speed?

No, the TMS320C6745 only supports USB 2.0 Full-Speed Host or Device via the USB0 OTG port. USB High-Speed functionality is available only on the TMS320C6747 device.

How many Multichannel Audio Serial Ports (McASP) are available?

The TMS320C6745 provides two McASP modules. The TMS320C6747 variant provides three McASP modules.