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Texas Instruments TMS320C6745DPTPT3
- Part No.:
- TMS320C6745DPTPT3
- Manufacturer:
- Texas Instruments
- Category:
- DSP (Digital Signal Processors)
- Package:
- 176-LQFP Exposed Pad
- Datasheet:
-
TMS320C6745DPTPT3.pdf
- Description:
- IC DSP FIX/FLOAT POINT 176HLQFP
- Quantity:
- Payment:
- Shipping:
Inventory:153
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Product details
Overview
TMS320C6745DPTPT3 from Texas Instruments is a fixed- and floating-point digital signal processor (DSP) based on the C674x VLIW architecture, operating at 375 MHz (1.2V core) or 456 MHz (1.3V core), featuring 32KB L1P/32KB L1D/256KB L2 unified RAM/cache, dual 64-bit timers, three UARTs, two McASPs, and EMAC+RMII for networked audio processing in embedded systems.
For engineers reviewing the TMS320C6745DPTPT3 datasheet, TMS320C6745DPTPT3 pinout, TMS320C6745DPTPT3 application, or TMS320C6745DPTPT3 equivalent, key selection considerations include its 176-pin HLQFP package, 3.3-V LVCMOS I/O compatibility, USB 2.0 Full-Speed OTG support, 16-bit EMIFB SDRAM interface (128-MB address space), and dual McASP audio serial ports with FIFO buffering for real-time multichannel audio I/O.
Technical Context
The TMS320C6745DPTPT3 implements a load-store VLIW architecture with eight functional units (.M1/.L1/.D1/.S1/.M2/.L2/.D2/.S2), 64 general-purpose 32-bit registers, and IEEE 754-compliant single- and double-precision floating-point execution - supporting up to four SP additions per cycle and two SP/DP reciprocal/square-root approximations per cycle. Its memory subsystem includes flexible L1/L2 cache partitioning and EDMA3 with 32 independent DMA channels and 8 QDMA channels for zero-overhead data movement.
Peripheral integration centers on real-time audio and connectivity: two McASPs support TDM/I²S/DIT formats with 16/9 serializers and dedicated FIFOs; EMAC+RMII enables IEEE 802.3-compliant 10/100 Mbps Ethernet; USB 2.0 OTG (Full-Speed client/host) includes integrated PHY; and eHRPWM/eCAP/eQEP modules provide deterministic motor control and encoder interfacing - all coordinated via a centralized power/sleep controller with clock gating domains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | C674x VLIW DSP - superset of C64x+/C67x+ ISAs, enabling legacy code reuse and high-throughput signal processing |
| Max Clock Frequency | 456 MHz at 1.3V CVDD - delivers 2736 MFLOPS peak performance for computationally intensive audio algorithms |
| On-Chip Memory | 32KB L1P + 32KB L1D + 256KB L2 unified RAM/cache - configurable as mapped RAM, cache, or hybrid for deterministic latency control |
| Audio Interfaces | 2 × McASP with FIFO buffers, 16/9 serializers, TDM/I²S/DIT support - enables simultaneous multi-channel audio capture/playback without CPU intervention |
| External Memory | EMIFB: 16-bit SDRAM, 128-MB address space; EMIFA: 8-bit NAND/NOR/Flash - supports bootable flash and low-latency streaming buffers |
| Connectivity | 10/100 EMAC (RMII), USB 2.0 OTG (Full-Speed), 3 × UART (1 with RTS/CTS), 2 × SPI, 2 × I²C - provides wired network, peripheral, and host communication paths |
| Package | 176-pin HLQFP (PTP), 24.00 mm × 24.00 mm, 0.5-mm pitch - compatible with standard surface-mount assembly and thermal management in compact audio enclosures |
Pinout & Package
Package: 176-pin PowerPAD™ Plastic Quad Flat Pack (HLQFP-PTP), 24.00 mm × 24.00 mm body, 0.5-mm pin pitch, exposed thermal pad for enhanced heat dissipation in continuous DSP operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CVDD | Core voltage supply (1.2V/1.3V) | Power domain for C674x CPU and L1 cache - requires tight regulation and local decoupling to sustain 456-MHz operation |
| DVDD | I/O voltage supply (3.3V) | Supplies all GPIO, McASP, UART, SPI, I²C, and EMAC pins - enables direct interfacing with standard logic and analog front-ends |
| CLKIN | External clock input (or crystal oscillator) | Primary timing reference for PLL-based system clock generation - supports 24–48 MHz crystals for stable audio sample rate derivation |
| EMU0/EMU1 | JTAG emulation interface | IEEE 1149.1 boundary-scan and debug access - essential for real-time trace, breakpoint, and register inspection during firmware development |
| MCASP0_AXR0–15 | McASP0 serial data lines | Configurable as transmit/receive bit clocks/frame sync/data - supports up to 16-channel TDM audio streams with programmable slot mapping |
| EMAC_MDIO/EMAC_MDC | Management Data I/O interface | Configures external Ethernet PHY registers (e.g., link status, speed, duplex) - required for auto-negotiation and RMII PHY initialization |
| USB0_DM/USB0_DP | USB 2.0 differential data pair | Full-Speed (12 Mbps) OTG signaling path - connects directly to USB connector with 27-Ω series termination and ESD protection |
Key Features
| Feature | Design Value |
|---|---|
| Two-Level Cache Architecture | L1P/L1D each 32KB, L2 256KB unified - reduces memory latency for FFT, FIR, and codec execution while enabling cache locking for critical ISR routines |
| Enhanced EDMA3 Controller | 32 independent DMA channels + 8 QDMA channels - enables concurrent audio buffer transfers, Ethernet packet DMA, and peripheral-to-memory moves without CPU cycles |
| Dual Multichannel Audio Serial Ports | 2 × McASP with 16/9 serializers and FIFOs - supports simultaneous stereo I²S playback + TDM microphone array capture at 48 kHz with <10 µs jitter |
| Programmable Real-Time Peripherals | 3 × eHRPWM (6 outputs), 3 × eCAP (32-bit capture/APWM), 2 × eQEP - provides hardware-timed PWM generation, edge-triggered timestamping, and quadrature decoding for motor/audio synchronization |
| Integrated Connectivity | 10/100 EMAC (RMII), USB 2.0 OTG (Full-Speed), MMC/SD - eliminates external PHYs and bridges, reducing BOM count and PCB area in streaming audio endpoints |
Applications
| Professional Audio Mixing Console | Automotive Infotainment Head Unit |
|---|---|
Use Scenario: Real-time mixing of 16-channel analog inputs with dynamic EQ, compression, and reverb using floating-point math. IC Role / Device Role / Timing Role: Primary DSP engine executing TI's DSPLIB and custom audio algorithms with deterministic sub-100 µs interrupt latency. Use Value: 2736 MFLOPS peak performance and dual McASP FIFOs enable simultaneous 48 kHz/24-bit I²S playback + TDM capture without buffer underruns. | Use Scenario: Central audio hub processing Bluetooth A2DP, USB audio, and CAN-based vehicle telemetry in a head unit. IC Role / Device Role / Timing Role: Audio subsystem controller managing USB 2.0 Full-Speed OTG for media device enumeration and EMAC for OTA firmware updates. Use Value: Integrated USB PHY and RMII Ethernet eliminate external transceivers, reducing component count while maintaining full-speed audio streaming and secure update capability. |
| Networked Soundbar with Streaming | Industrial Audio Analytics Edge Node |
Use Scenario: Wi-Fi-connected soundbar receiving Spotify Connect or AirPlay streams and applying room correction via FIR filters. IC Role / Device Role / Timing Role: Audio decode and post-processing engine interfacing with external Wi-Fi SoC via UART/EMAC and driving Class-D amplifiers via McASP. Use Value: 256KB L2 RAM stores large FIR coefficient tables; EDMA3 offloads PCM data movement, freeing CPU for adaptive filter updates. | Use Scenario: Acoustic monitoring node detecting machinery faults via spectral analysis of vibration signatures in factory environments. IC Role / Device Role / Timing Role: Real-time FFT and feature extraction processor acquiring sensor data via McASP I²S and logging results over EMAC to cloud gateway. Use Value: C674x floating-point precision ensures accurate dBFS scaling and harmonic ratio calculation; industrial temperature rating (-40°C to 105°C) guarantees reliability in harsh settings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar DSP applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TMS320C6747DZKB3 | 256-ball PBGA, 3 McASPs, 128KB shared RAM, USB 1.1 OHCI host, 16/32-bit EMIFB SDRAM | Supports LCD controller, HPI, RTC, and higher memory bandwidth - suited for display-integrated audio/video systems | Select when requiring third McASP, HPI for host co-processor, or RTC for time-stamped logging |
| OMAP-L138AZWT | ARM9 + C674x dual-core, 375 MHz DSP + 300 MHz ARM, 128MB DDR2 via EMIF, no USB OTG PHY | Enables Linux-based application layer alongside real-time DSP - ideal for GUI-driven audio analyzers with web interfaces | Select when needing embedded OS support, TCP/IP stack offload, or heterogeneous processing for control + signal tasks |
Compared with TMS320C6745DPTPT3, TMS320C6747DZKB3 adds peripherals (LCD/HPI/RTC) and memory bandwidth but uses a larger PBGA package; OMAP-L138AZWT trades standalone DSP simplicity for ARM+DSP heterogeneity and OS capability, requiring additional software stack integration effort.
Availability
TMS320C6745DPTPT3 is available at Aetrix Electronics and suitable for professional audio mixing consoles, automotive infotainment head units, and networked soundbars requiring stable component supply, long-term industrial lifecycle support, and consistent electrical specifications across production batches.
Supply support for TMS320C6745DPTPT3 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and consumer markets since 1930.
The TMS320C6000™ platform - including the TMS320C6745DPTPT3 - was designed specifically for high-performance, low-power digital signal processing in real-time audio, communications, and industrial control applications, emphasizing code compatibility, memory efficiency, and peripheral integration.
FAQ
What is the maximum operating frequency of the TMS320C6745DPTPT3 and what voltage is required?
The TMS320C6745DPTPT3 operates at up to 456 MHz when supplied with 1.3V core voltage (CVDD), and at 375 MHz with 1.2V CVDD. These frequencies are specified under recommended operating conditions and validated across commercial and industrial temperature ranges. The TMS320C6745DPTPT3 datasheet defines precise power sequencing and decoupling requirements to sustain stable operation at either frequency point.
Does the TMS320C6745DPTPT3 support IEEE 754 single- and double-precision floating-point arithmetic?
Yes, the TMS320C6745DPTPT3 C674x core fully supports IEEE 754-compliant single-precision (32-bit) and double-precision (64-bit) floating-point operations, including addition, multiplication, reciprocal approximation (RCPxP), and square-root reciprocal approximation (RSQRxP). It achieves up to four SP additions per clock cycle and two DP additions every two clocks - confirmed in the SPRS377F datasheet Section 1.1 and Section 3.3.1.
How many multichannel audio serial ports (McASPs) does the TMS320C6745DPTPT3 integrate, and what are their capabilities?
The TMS320C6745DPTPT3 integrates two McASPs (McASP0 and McASP1), each with 16/9 serializers, transmit/receive FIFO buffers, and support for TDM, I²S, and DIT protocols. Each McASP provides up to 16 serial data pins and six clock zones - enabling simultaneous multichannel audio I/O with programmable slot mapping and low-jitter frame synchronization as documented in Section 6.16 of the TMS320C6745DPTPT3 datasheet.
What external memory interfaces are available on the TMS320C6745DPTPT3 and what types of memory do they support?
The TMS320C6745DPTPT3 features two external memory interfaces: EMIFA supports 8-bit NAND/NOR Flash and asynchronous SRAM; EMIFB supports 16-bit SDRAM with up to 128-MB address space. EMIFA lacks SDRAM support, while EMIFB is optimized for high-bandwidth streaming buffers - both are detailed in Sections 6.10 and 6.11 of the TMS320C6745DPTPT3 technical documentation.
Is the TMS320C6745DPTPT3 pin-compatible with the TMS320C6747, and what are the key package differences?
No, the TMS320C6745DPTPT3 is not pin-compatible with the TMS320C6747. The TMS320C6745DPTPT3 uses a 176-pin HLQFP (PTP) package (24 mm × 24 mm, 0.5-mm pitch), whereas the TMS320C6747 uses a 256-ball PBGA (ZKB) package (17 mm × 17 mm, 1.0-mm pitch). Peripheral availability also differs - e.g., TMS320C6745DPTPT3 has two McASPs and no HPI or RTC, unlike the C6747.
TMS320C6745DPTPT3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- TMS320C674x
- Package/Case:
- 176-LQFP Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Type:
- Fixed/Floating Point
- Interface:
- EBI/EMI, Ethernet MAC, I2C, McASP, SPI, UART, USB
- Clock Rate:
- 375MHz
- Non-Volatile Memory:
- External
- On-Chip RAM:
- 320kB
- Voltage - I/O:
- 3.30V
- Voltage - Core:
- 1.20V
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 176-HLQFP (24x24)
TMS320C6745DPTPT3 FAQ
1.How can I place an order for TMS320C6745DPTPT3 through Aetrix?
Please submit a Request for Quotation (RFQ) for TMS320C6745DPTPT3 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TMS320C6745DPTPT3 reliable?
The price and inventory of TMS320C6745DPTPT3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TMS320C6745DPTPT3 is usually 5 days.
3.What payment methods are accepted for TMS320C6745DPTPT3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TMS320C6745DPTPT3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TMS320C6745DPTPT3?
TMS320C6745DPTPT3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TMS320C6745DPTPT3 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TMS320C6745DPTPT3?
For technical support, including TMS320C6745DPTPT3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TMS320C6745DPTPT3 requirements.
6.How does Aetrix verify that TMS320C6745DPTPT3 is sourced from the original manufacturer or authorized distributors?
All TMS320C6745DPTPT3 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TMS320C6745DPTPT3 meets industry standards.
7.What is the process for return or replacement of TMS320C6745DPTPT3?
All TMS320C6745DPTPT3 units undergo pre-shipment inspection (PSI). If there is an issue with TMS320C6745DPTPT3, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TMS320C6745DPTPT3 part is unused and in its original packaging.
Return procedure for TMS320C6745DPTPT3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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