Texas Instruments TMS320C6455BZTZ

Overview

TMS320C6455BZTZ from Texas Instruments is a high-performance fixed-point digital signal processor (DSP) based on the C64x+™ VLIW architecture, operating at up to 1.2 GHz (0.83-ns cycle time), delivering 9600 MIPS/16-bit MMACs, with integrated DDR2-533 memory controller, dual McBSPs, 10/100/1000-Mb/s Ethernet MAC, and four 1× Serial RapidIO® v1.2 links - deployed in telecom infrastructure baseband processing and wireless infrastructure equipment.

For engineers reviewing the TMS320C6455BZTZ datasheet, TMS320C6455BZTZ pinout, TMS320C6455BZTZ application, or TMS320C6455BZTZ equivalent, key selection criteria include its 697-pin BGA package (0.8-mm pitch), 1.2-V core/1.8-V DDR2 I/O voltage support, EDMA3 with 64 channels, L1/L2 memory configuration flexibility (32KB L1P, 32KB L1D, 2048KB L2 unified), and hardware-accelerated VCP2/TCP2 coprocessors for real-time turbo/Viterbi decoding.

Technical Context

The TMS320C6455BZTZ implements an eight-functional-unit C64x+™ DSP core with dual 32-bit register files and two data paths, enabling eight 16×16-bit MACs per cycle. Its memory subsystem features 32KB direct-mapped L1P cache, 32KB two-way set-associative L1D cache, and 2048KB flexible L2 unified RAM/cache with memory protection and bandwidth management.

Peripheral integration includes a 64-bit EMIFA for glueless interface to SRAM/Flash/SBSRAM, a 32-bit DDR2-533 controller clocked by PLL2, IEEE 802.3-compliant EMAC with RGMII/GMII/MII/RMII support, and dual 64-bit timers configurable as four 32-bit units - all coordinated via switched central resources and dual PLLs (PLL1 for CPU, PLL2 for DDR2/EMAC).

Key Specifications

Pinout & Package

697-pin flip-chip plastic BGA package (ZTZ suffix), 24 mm × 24 mm body, 0.8-mm ball pitch, RoHS-compliant - designed for high-density PCB layouts in telecom and industrial embedded systems with thermal and signal integrity constraints.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TMS320C6457BZTZ, the TMS320C6455BZTZ lacks lockstep and safety registers but matches all performance and peripheral specs; versus TMS320C6678ACYPA, it trades floating-point flexibility and multi-core scaling for superior fixed-point efficiency, integrated coprocessors, and proven deployment in cost-sensitive infrastructure.

Availability

TMS320C6455BZTZ is available at Aetrix Electronics and suitable for wireless infrastructure, telecom line cards, medical imaging systems, and video analytics platforms requiring stable component supply across extended product lifecycles.

Supply support for TMS320C6455BZTZ 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 leader specializing in analog, embedded processing, and connectivity technologies, with decades of leadership in DSP innovation and industrial-grade reliability.

The TMS320C6455BZTZ belongs to TI's C6000™ DSP platform, designed specifically for high-throughput, deterministic fixed-point signal processing in telecom, wireless, and imaging infrastructure where computational density and hardware acceleration are critical.

FAQ

What is the maximum operating frequency of the TMS320C6455BZTZ?

The TMS320C6455BZTZ operates at up to 1.2 GHz (833 ps cycle time), confirmed in the SPRS276M datasheet Section 2.1. This frequency enables 9600 MIPS and 9600 16-bit MMACs per second. The device achieves this speed using a 0.09-μm process and dual PLL architecture, with PLL1 generating the CPU clock. Thermal design must accommodate peak power dissipation at this rate.

Does the TMS320C6455BZTZ support DDR2 memory, and what are the interface specifications?

Yes, the TMS320C6455BZTZ integrates a dedicated DDR2 memory controller supporting DDR2-533 (266 MHz clock, 533 MT/s data rate) with 32-bit bus width and 1.8-V I/O. It connects to standard DDR2 SDRAM modules with configurable timing parameters and supports up to 512 MB address space (E000 0000–FFFF FFFF). PLL2 provides the DDR2 clock source.

What serial interfaces does the TMS320C6455BZTZ provide for chip-to-chip communication?

The TMS320C6455BZTZ provides four 1× Serial RapidIO® v1.2 links (or one aggregated 4× link) supporting 1.25–3.125 Gbps per lane, plus two McBSPs for TDM/audio, one I2C for control, and a 32-bit PCI interface. RapidIO is optimized for low-latency, high-bandwidth inter-DSP communication in telecom line cards and multi-processor systems.

How does the TMS320C6455BZTZ handle Ethernet connectivity?

The TMS320C6455BZTZ includes a fully integrated 10/100/1000-Mb/s Ethernet MAC (EMAC) compliant with IEEE 802.3, supporting MII, RMII, GMII, and RGMII physical interfaces. It features 8 independent TX/RX channels, MDIO management, and descriptor-based DMA - enabling concurrent handling of control-plane and data-plane traffic without CPU intervention.

Is the TMS320C6455BZTZ pin-compatible with other C6455 variants such as CTZ or GTZ packages?

Yes, the TMS320C6455BZTZ shares identical pinout and signal mapping with TMS320C6455CTZ and TMS320C6455GTZ, all using the same 697-pin ZTZ/CTZ/GTZ BGA footprint and 0.8-mm ball pitch. Differences are limited to internal die revision and thermal characteristics - mechanical and electrical interface compatibility is maintained across all three suffixes.