Texas Instruments TMS320C6455BZTZA

Overview

TMS320C6455BZTZA from Texas Instruments is a high-performance fixed-point digital signal processor (DSP) based on the C64x+™ VLIW architecture, operating at 1.2 GHz with 9600 MIPS/16-bit MMACs, integrated DDR2 memory controller (533 MHz), 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 TMS320C6455BZTZA datasheet, TMS320C6455BZTZA pinout, TMS320C6455BZTZA application, or TMS320C6455BZTZA equivalent, key selection criteria include its 697-pin CTZ/GTZ/ZTZ BGA package, 1.2-V core voltage, L1/L2 memory hierarchy (32KB L1P, 32KB L1D, 2048KB L2), EDMA3 controller with 64 channels, and IEEE 1149.1/1149.6 JTAG-compliant debug support.

Technical Context

The TMS320C6455BZTZA 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 configurable L1P (direct-mapped cache) and L1D (2-way set-associative cache), plus 2048KB unified L2 RAM/cache with flexible allocation and memory protection.

Peripherals are tightly coupled via switched central resources: PLL1 drives CPU/EMIFA/PCI, while PLL2 independently clocks DDR2 and EMAC; EDMA3 supports zero-overhead transfers across L2, external memory, and peripherals; and the 64-bit EMIFA provides glueless interface to SRAM, Flash, SBSRAM, and FPGA logic.

Key Specifications

Pinout & Package

697-pin flip-chip plastic BGA (CTZ/GTZ/ZTZ package), 24 mm × 24 mm, 0.8-mm ball pitch, RoHS-compliant. Package supports thermal dissipation for sustained 1.2-GHz operation in extended temperature range (–40°C to 105°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TMS320C6455BZTZA, the TMS320C6457BZTZA trades baseband acceleration for fronthaul SerDes, while the TMS320C6678ACYPA replaces fixed-point specialization with multi-core floating-point versatility - making TMS320C6455BZTZA optimal for cost-sensitive, latency-critical, and coprocessor-dependent telecom infrastructure.

Availability

TMS320C6455BZTZA is available at Aetrix Electronics and suitable for wireless infrastructure, medical imaging, and industrial Ethernet gateway applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for TMS320C6455BZTZA 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 TMS320C6455BZTZA belongs to TI's C6000™ DSP platform, designed specifically for high-throughput, low-latency fixed-point signal processing in telecom, video, and medical equipment where deterministic real-time performance is mandatory.

FAQ

What is the maximum operating frequency of the TMS320C6455BZTZA?

The TMS320C6455BZTZA operates at a maximum CPU clock rate of 1.2 GHz, delivering 9600 million instructions per second (MIPS) and 9600 16-bit multiply-accumulates per second. This frequency is achieved using a 1.25-V core supply and requires proper thermal management within the extended temperature range (–40°C to 105°C). The TMS320C6455BZTZA datasheet specifies timing margins and voltage tolerances for stable 1.2-GHz operation.

Does the TMS320C6455BZTZA support DDR2 memory, and what are the interface specifications?

Yes, the TMS320C6455BZTZA integrates a dedicated DDR2 memory controller supporting 32-bit wide, 533-MHz data rate (DDR2-533) operation, compatible with standard DDR2 SDRAM components. It provides 512MB of total addressable external memory space via CE0, uses 1.8-V I/O signaling, and is clocked independently by PLL2 to isolate memory timing from CPU domains. The TMS320C6455BZTZA supports configurable burst lengths, refresh modes, and memory protection.

What debugging and trace capabilities does the TMS320C6455BZTZA provide?

The TMS320C6455BZTZA includes IEEE 1149.1 (JTAG) boundary-scan, IEEE 1149.6 AC-jitter-tolerant scan for high-speed I/Os, and Advanced Event Triggering (AET) hardware trace. AET enables cycle-accurate instruction tracing, data watchpoints, and pipeline state capture - essential for validating real-time DSP algorithms. The TMS320C6455BZTZA also supports in-circuit emulation via TI's XDS560v2 and XDS200 debug probes.

Can the TMS320C6455BZTZA be used in extended temperature applications?

Yes, the TMS320C6455BZTZA is qualified for extended temperature operation from –40°C to 105°C, with full electrical specifications guaranteed across this range. Its 0.09-μm CMOS process, thermal design of the 697-pin CTZ/GTZ/ZTZ BGA package, and validated PLL/DDR2 timing margins ensure reliable 1.2-GHz operation in harsh environments such as outdoor wireless base stations and industrial control cabinets. The TMS320C6455BZTZA meets TI's extended temperature product definition.

How many Serial RapidIO® links does the TMS320C6455BZTZA support, and at what speeds?

The TMS320C6455BZTZA supports four 1× Serial RapidIO® v1.2 links or one aggregated 4× link, operating at 1.25, 2.5, or 3.125 Gbps per lane. Each link includes dedicated differential clock inputs (RX_CLK/TX_CLK), hardware flow control, congestion management, and message passing extensions. This enables scalable multi-DSP topologies in radar, telecom, and video processing systems - a capability confirmed in the TMS320C6455BZTZA functional block diagram and SPRS276M datasheet.