Texas Instruments TMS320C6747DZKBA3

Overview

TMS320C6747DZKBA3 from Texas Instruments is a fixed- and floating-point VLIW digital signal processor with a 456-MHz C674x core, 448KB on-chip RAM (32KB L1P, 32KB L1D, 256KB L2, +128KB shared), and integrated peripherals including USB 2.0 OTG, USB 1.1 OHCI host, 10/100 Ethernet MAC, LCD controller, and three McASPs - deployed in professional audio processing, networked A/V receivers, and automotive amplifier systems.

For engineers reviewing the TMS320C6747DZKBA3 datasheet, TMS320C6747DZKBA3 pinout, TMS320C6747DZKBA3 application, or TMS320C6747DZKBA3 equivalent, key selection considerations include its 256-ball PBGA (ZKB) package, 1.3-V core supply at 456 MHz, dual-USB capability (OTG + OHCI), real-time clock with 32-kHz oscillator, and PRUSS subsystem for offloading deterministic I/O tasks.

Technical Context

The TMS320C6747DZKBA3 implements a two-level cache hierarchy: 32KB L1P direct-mapped program cache, 32KB L1D 2-way set-associative data cache, and 256KB unified L2 RAM/cache configurable as mapped memory, cache, or hybrid - enabling deterministic DSP execution while supporting concurrent host access via dedicated 128KB shared RAM. Its C674x CPU executes up to 3648 MIPS and 2736 MFLOPS, with IEEE single- and double-precision floating-point support, mixed-precision multiply, and hardware-accelerated reciprocal/square-root approximation.

Peripheral integration includes EMAC with RMII and MDIO, three McASPs supporting TDM/I²S/DIT, eHRPWM/eCAP/eQEP modules for motor control, and a programmable PRUSS with two 32-bit RISC cores (4KB IRAM + 512B DRAM each) - all managed under a unified power/sleep controller with clock gating and PSC domains. The device supports boot from NAND, NOR, SPI flash, or UART, with JTAG debug and AET trace support.

Key Specifications

Pinout & Package

256-ball Pb-free plastic ball grid array (PBGA) package with 1.0-mm ball pitch, 17.0 mm × 17.0 mm body size, and thermal pad for enhanced heat dissipation in audio amplifier applications.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar fixed/floating-point DSP applications.

Compared with TMS320C6745PTP, TMS320C6747DZKBA3 provides higher clock frequency, dual USB, RTC, and 128KB shared RAM - making it optimal for feature-rich, space-constrained audio systems; versus OMAP-L138AZWT, it offers lower power and simpler BSP but lacks ARM-side OS capabilities.

Availability

TMS320C6747DZKBA3 is available at Aetrix Electronics and suitable for professional audio mixing consoles, networked A/V receivers, and automotive digital amplifiers requiring stable component supply, long-term industrial lifecycle support, and qualified production-grade silicon.

Supply support for TMS320C6747DZKBA3 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.

The TMS320C6747DZKBA3 belongs to TI's C6000™ DSP platform, designed specifically for low-power, high-performance audio, voice, and communications applications where deterministic real-time processing and rich peripheral integration are essential.

FAQ

What is the maximum operating frequency of the TMS320C6747DZKBA3 and what voltage is required?

The TMS320C6747DZKBA3 operates at a maximum frequency of 456 MHz when supplied with a 1.3-V core voltage (CVDD). At 1.2 V, the guaranteed maximum frequency is 375 MHz. Both voltage/frequency combinations are supported across commercial and industrial temperature ranges, with thermal derating specified in the datasheet's recommended operating conditions table.

Does the TMS320C6747DZKBA3 support both USB host and device modes simultaneously?

Yes, the TMS320C6747DZKBA3 supports simultaneous USB operation: USB 2.0 OTG (USB0) functions as a high/full-speed device or host, while USB 1.1 OHCI (USB1) operates exclusively as a full-speed host. This dual-USB architecture enables concurrent connection to a PC (as device) and USB audio peripherals (as host), without requiring external USB switches or hubs.

What audio interfaces are integrated into the TMS320C6747DZKBA3 and how many channels do they support?

The TMS320C6747DZKBA3 integrates three Multichannel Audio Serial Ports (McASPs), each supporting multiple serializers and FIFO buffers. McASP0 and McASP1 support up to 16 serializers; McASP2 adds DIT (S/PDIF transmit) capability. Collectively, they enable up to 28 serial data pins and support TDM, I²S, and other formats - sufficient for 8-channel input/output at 192 kHz in professional audio applications.

Is the 128KB shared RAM in the TMS320C6747DZKBA3 accessible by external hosts, and does it impact DSP performance?

Yes, the 128KB shared RAM in the TMS320C6747DZKBA3 is accessible by external processors or DMA controllers without contention on the DSP's L2 memory bus. It is physically separate from the 256KB L2 RAM/cache, ensuring that host access to shared RAM does not degrade DSP instruction or data throughput - a key advantage for multi-processor audio system architectures.

What is the role of the PRUSS subsystem in the TMS320C6747DZKBA3, and how is it used in audio applications?

The PRUSS in the TMS320C6747DZKBA3 consists of two independent 32-bit RISC cores with dedicated instruction and data RAM. In audio applications, it handles time-critical tasks such as GPIO-based button debouncing, PWM synchronization for analog gain control, or protocol translation (e.g., I²C-to-SPI), freeing the C674x DSP core to focus exclusively on computationally intensive signal processing algorithms.