Texas Instruments TMS320C6455BGTZA

Overview

TMS320C6455BGTZA from Texas Instruments is a high-performance fixed-point digital signal processor (DSP) built on the C64x+™ VLIW architecture, operating at up to 1.2 GHz with 9600 MIPS/16-bit MMACs, integrated DDR2-533 memory controller, dual McBSPs, 10/100/1000-Mb/s Ethernet MAC, and four Serial RapidIO® v1.2 links - deployed in telecom infrastructure baseband processing, wireless infrastructure, and video analytics systems.

For engineers reviewing the TMS320C6455BGTZA datasheet, TMS320C6455BGTZA pinout, TMS320C6455BGTZA application, or TMS320C6455BGTZA equivalent, key selection criteria include its 697-pin CTZ/GTZ/ZTZ BGA package, 1.2-V core / 1.8-V DDR2 I/O voltage support, L1P/L1D cache configuration flexibility, EDMA3 controller with 64 channels, and hardware-accelerated VCP2/TCP2 coprocessors for real-time turbo and Viterbi decoding.

Technical Context

The TMS320C6455BGTZA 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 includes 32KB L1P (direct-mapped), 32KB L1D (2-way set-associative), and 2048KB L2 unified RAM/cache with flexible allocation.

Peripheral integration includes a 64-bit EMIFA for glueless SRAM/Flash/SBSRAM interfacing, a 32-bit DDR2-533 controller clocked by PLL2, IEEE 802.3-compliant EMAC with RGMII/MII/GMII/RMII support, and dual 64-bit timers configurable as four 32-bit units - all coordinated via a switched central resource fabric with bandwidth management and memory protection.

Key Specifications

Pinout & Package

697-pin flip-chip plastic BGA (GTZ package), 24 mm × 24 mm body, 0.8-mm ball pitch, RoHS-compliant. Pinout defined per TI SPRS276M Figure 1-1 (CTZ/GTZ/ZTZ bottom view); full assignment documented in Section 2.7 "Terminal Functions" of datasheet.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TMS320C6455BGTZA, the TMS320C6457BGTZA offers identical performance and footprint with enhanced networking but reduced telecom interface support, while the TMS320C6678ACYPA delivers higher aggregate throughput via eight cores but sacrifices hardware decoder acceleration and demands significant hardware/software rework.

Availability

TMS320C6455BGTZA is available at Aetrix Electronics and suitable for wireless infrastructure, medical imaging systems, and industrial Ethernet gateway designs requiring stable component supply across extended temperature ranges (–40°C to 105°C) and long lifecycle support.

Supply support for TMS320C6455BGTZA 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, specializing in analog, embedded processing, and digital signal processing technologies since 1930.

The TMS320C6455BGTZA belongs to TI's C6000™ DSP platform - designed specifically for high-throughput, low-latency fixed-point signal processing in telecom, video, and industrial infrastructure where deterministic real-time performance is critical.

FAQ

What is the maximum operating frequency and corresponding instruction cycle time for the TMS320C6455BGTZA?

The TMS320C6455BGTZA operates at up to 1.2 GHz, delivering a 0.83-ns instruction cycle time. This frequency is achieved using PLL1 with CLKIN1 multiplied by ×40 (e.g., 30 MHz input). The device also supports lower-speed variants (720 MHz, 850 MHz, 1 GHz) with correspondingly longer cycle times (1.39 ns, 1.17 ns, 1 ns), all sharing the same TMS320C6455BGTZA part number and GTZ package.

Does the TMS320C6455BGTZA support both little-endian and big-endian data formats?

Yes, the TMS320C6455BGTZA supports runtime-configurable endianess via the C64x+ CPU's control register. Software can switch between little-endian and big-endian modes without reset, enabling seamless integration with heterogeneous systems such as ARM-based hosts or legacy DSP codebases that require specific byte ordering.

What memory interfaces does the TMS320C6455BGTZA provide for external storage?

The TMS320C6455BGTZA integrates two primary external memory interfaces: a 64-bit EMIFA supporting glueless connection to SRAM, Flash, EEPROM, and synchronous memories (SBSRAM, ZBT SRAM); and a dedicated 32-bit DDR2-533 controller supporting up to 512MB of DDR2 SDRAM with 1.8-V I/O voltage. Both interfaces are independently clocked and configurable via memory-mapped registers.

How many Serial RapidIO® lanes does the TMS320C6455BGTZA support, and what are their compliance details?

The TMS320C6455BGTZA supports four 1x Serial RapidIO® lanes (or one aggregated 4x lane), compliant with RapidIO Interconnect Specification v1.2. Each lane operates at link rates of 1.25, 2.5, or 3.125 Gbps, with hardware support for message passing, DirectIO, error management extensions, and congestion control - enabling high-bandwidth, low-latency chip-to-chip communication in multi-DSP systems.

Is the TMS320C6455BGTZA pin-compatible with other members of the C6455 family, such as the CTZ or ZTZ variants?

Yes, the TMS320C6455BGTZA shares identical pinout and package dimensions (697-pin GTZ BGA, 24 mm × 24 mm, 0.8-mm pitch) with the CTZ and ZTZ variants. All three suffixes denote the same mechanical footprint and electrical pin assignments; differences are limited to process optimization and screening - making them functionally and physically interchangeable on PCBs designed for any of these packages.