TMS320C6655CZH - 1GHz C66x DSP | Texas Instruments
料号： TMS320C6655CZH ✓ 量产中TMS320C6655CZH 概述
A digital signal processor is a specialized semiconductor architecture optimized for high-throughput mathematical operations. Unlike a general-purpose processor, the C66x DSP combines parallel execution units, dedicated addressing capabilities, and high-speed on-chip memory access. Within the processing hierarchy, it belongs to the TMS320 family, the DSP class, and the broader embedded processor and semiconductor market.
The TMS320C6655CZH includes one C66x core, 128 kB of program memory, and approximately 2 MB of on-chip RAM. Its interfaces include DDR3 memory, EMAC, Ethernet, McBSP, PCIe, I2C, SPI, UART, and Universal Parallel Port connectivity. These resources allow the processor to handle demanding data-transfer and real-time signal-processing workloads without relying exclusively on external memory.
At its 1 GHz operating point, the C66x architecture executes parallel fixed- and floating-point instructions. The available device family reaches 1.25 GHz, representing a 25% increase over the nominal 1 GHz configuration. The processor's combination of computational throughput, local memory, and dedicated serial interfaces makes it particularly useful when deterministic data movement and real-time execution are more important than general-purpose software flexibility.
Typical uses include industrial communications, radar and signal processing, test equipment, audio processing, and networked control systems. The Ethernet and memory interfaces suit systems that move substantial volumes of data, while McBSP and audio-compatible serial resources support multi-channel signal acquisition and conversion. A processor-centric design can consolidate multiple fixed-point and floating-point tasks into one programmable platform.
Board design requires careful attention to the FCBGA footprint, multilayer-routing rules, high-speed memory interfaces, clocking, and thermal management. Confirm the exact pin assignments, power domains, decoupling requirements, and initialization procedure in the TMS320C6655 manufacturer datasheet before schematic capture or PCB layout.
This product record combines the manufacturer specifications, package identity, memory characteristics, and interface list with practical application guidance. It also distinguishes device-family drop-in options by speed and package ordering code while providing design notes for engineers evaluating the TMS320C6655CZH as the processing element in a high-performance embedded system.
直接替换替代料： TMS320C6655CZH ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： TMS320C6655CZH （相同外形与封装尺寸） ——差异在于 Processor Core.
TMS320C6655CZH2
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
TMS320C6655CZH25
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
TMS320C6657CZH
✅ 直接替换 ⚠️ 规格未核验联系询价
查看数据手册 →TMS320C6657CZH2
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
TMS320C6657CZH25
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
TMS320C6655CZH 规格参数
| Product Type | Fixed/Floating-Point Digital Signal Processor |
| Processor Core | 1 C66x core |
| Nominal Clock Frequency | 1 GHz |
| Maximum Device-Family Clock Frequency | 1.25 GHz |
| Instruction Throughput | 8000 MIPS |
| Word Width | 16 bit |
| Program Memory Size | 128 kB |
| On-Chip RAM | 2 MB |
| Arithmetic Support | Fixed-point and floating-point |
| External Memory Interface | DDR3 |
| Network Interfaces | EMAC, Ethernet |
| Serial Interfaces | McBSP, I2C, SPI, UART |
| Expansion Interfaces | PCIe, Universal Parallel Port |
| 封装 | 625-pin FCBGA (CZH), 21 x 21 mm |
| 安装类型 | Surface mount |
| Device Status | Active |
TMS320C6655CZH 625-pin fcbga (czh), 21 x 21 mm 引脚配置指南
TMS320C6655CZH（625-pin fcbga (czh), 21 x 21 mm 封装）的引脚配置。 引脚编号、功能和连接图在制造商数据手册中定义。请参阅该手册以了解确切的封装尺寸和焊接指南。
暂无详细引脚数据： TMS320C6655CZH.
请参阅 数据手册 以查看完整引脚配置。
典型应用
TMS320C6655CZH 适用于 6 应用s: Industrial Ethernet Signal Processing, Communications Baseband Processing, Audio and Multichannel Signal Conversion, Radar and Test Instrumentation, Machine Vision and Imaging Control, Precision Industrial Control.
Industrial Ethernet Signal Processing
The TMS320C6655CZH fits industrial Ethernet gateways that combine packet handling with real-time filtering, modulation, or spectral analysis. Its 1 GHz C66x core provides up to 8000 MIPS of throughput, while approximately 2 MB of on-chip RAM places frequently used samples close to the computation units. The Ethernet and EMAC interfaces support network traffic, and DDR3 expands capacity for packet and waveform buffers. Using the processor for both network control and real-time processing reduces separate accelerator overhead, although sustained traffic must be evaluated against memory bandwidth and the device's thermal limits.
推荐
Communications Baseband Processing
The TMS320C6655CZH is well suited to communications baseband equipment requiring parallel fixed- and floating-point arithmetic at 1 GHz. Its C66x core can execute filtering, correlation, modulation, demodulation, and protocol-processing workloads while the 625-pin FCBGA exposes dedicated communications peripherals. DDR3 accommodates larger symbol buffers, and Ethernet or UPP can connect the processor to network or framer hardware. The main design constraint is sustained processor and memory activity, which must be converted into junction-temperature and power-delivery requirements rather than treated only as a clock-rate calculation.
推荐
Audio and Multichannel Signal Conversion
The TMS320C6655CZH can serve as the central DSP in multichannel audio processing systems that combine real-time filtering, mixing, dynamic-range processing, and format conversion. Its 1 GHz C66x core provides substantially more arithmetic capability than a conventional control MCU, while McBSP offers a direct path to serial converters and audio codecs. The 128 kB program memory supports boot code, and the larger on-chip RAM accommodates working buffers for active channels. Designers should allocate time deterministically for audio deadlines and verify converter interface timing against the McBSP configuration.
推荐
Radar and Test Instrumentation
The TMS320C6655CZH is appropriate for radar, instrumentation, and measurement systems that must acquire, transform, and analyze large data streams in real time. The single C66x core provides parallel fixed- and floating-point execution, while DDR3 supports high-volume sample acquisition and result buffers. McBSP is useful for connecting converters and custom digitizers, and PCIe or UPP can move data between the DSP and an FPGA or host processor. For time-critical measurements, engineers should partition memory and interconnect traffic carefully because simultaneous accelerator and network activity can reduce the headroom available to real-time processing.
推荐
Machine Vision and Imaging Control
The TMS320C6655CZH can act as a high-speed image-processing controller in industrial cameras and machine-vision systems. Its 1 GHz C66x core supports fixed-point operations used for filtering, thresholding, feature extraction, and pixel-level analysis, while floating-point capability helps with calibration and compensation. DDR3 provides capacity for frame buffers, and PCIe, Ethernet, or UPP supports image transfer to a host, FPGA, or network. The 625-pin FCBGA requires a dense multilayer PCB, so signal integrity, power integrity, and thermal design should be completed before the high-volume processing workload is committed.
推荐
Precision Industrial Control
The TMS320C6655CZH is suitable for advanced industrial control loops where signal conditioning, vibration analysis, or predictive processing must run alongside network communication. The C66x architecture combines fixed-point efficiency with floating-point flexibility, allowing the same processor to execute control algorithms and complex supervisory functions. DDR3 can hold histories and model data, while UART, SPI, I2C, and Ethernet provide multiple levels of connectivity. Unlike a general-purpose control processor, the DSP provides deterministic parallel arithmetic, but cycle budgets and interrupt latency must be verified for the safety-critical control task.
推荐
推荐产品汇总
工程参考数据： TMS320C6655CZH ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | TMS320C6655CZH2 | TMS320C6655CZH25 | TMS320C6657CZH | TMS320C6657CZH2 | TMS320C6657CZH25 |
|---|---|---|---|---|---|---|
| Package | FCBGA-625 (CZH), 21 x 21 mm | FCBGA-625 (CZH), same footprint | FCBGA-625 (CZH), same footprint | FCBGA-625 (CZH), same footprint | FCBGA-625 (CZH), same footprint | FCBGA-625 (CZH), same footprint |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Processor Core | Single C66x C6655 core | Single C66x C6655 core | Single C66x C6655 core | Single C66x C6677 core | Single C66x C6677 core | Single C66x C6677 core |
| Maximum Family Clock Frequency | 1.25 GHz | 1.25 GHz | 1.25 GHz | 1.25 GHz | 1.25 GHz | 1.25 GHz |
| Arithmetic Type | Fixed-point and floating-point | Fixed-point and floating-point | Fixed-point and floating-point | Fixed-point and floating-point | Fixed-point and floating-point | Fixed-point and floating-point |
| External Memory Interface | DDR3 | DDR3 | DDR3 | DDR3 | DDR3 | DDR3 |
关键差异点
- Higher same-package processing option （对比 TMS320C6655CZH2)
- Upgrade path within the same processor family （对比 TMS320C6657CZH)
- Mechanical reuse across the listed family options （对比 TMS320C6657CZH2)
- Single-package integration of high-speed and serial interfaces （对比 TMS320C6655CZH25)
设计说明
Treat the 625-ball FCBGA as a multilayer high-density design rather than a conventional leaded package. Follow the manufacturer CZH land pattern exactly, including ball size, solder-mask definition, and via arrangement. Place decoupling capacitors directly across the applicable power and ground balls using the power-plane and via guidance in the manufacturer layout examples. Separate high-speed clock and memory routing from analog and communication interfaces, and verify the completed stack-up against the device's DDR3 signal-integrity requirements before release.
Estimate power from the selected clock, core voltage, external-memory activity, and enabled peripherals rather than from clock frequency alone. Calculated: P approximately equals Vcore multiplied by average core current, plus the measured or datasheet-based current for DDR3 and other I/O domains. Compare total estimated dissipation with the package thermal limits for the actual board area, copper coverage, airflow, and ambient temperature. The 21 x 21 mm FCBGA requires deliberate heat spreading through the PCB and enclosure to prevent clock throttling or junction-temperature exceedance.
Design the DDR3 interface as a constrained, point-to-point synchronous network with continuous reference-plane support. Match length and loss through the selected PCB stack-up, apply manufacturer-recommended topology and via geometry, and validate timing with the actual memory density, rank configuration, and operating speed. Keep the clock and chip-select routing clean, and do not substitute generic processor-board assumptions for the TMS320C6655 interface constraints. Post-layout signal-integrity simulation should include expected loss, jitter, crosstalk, and termination behavior.
A matching FCBGA outline does not by itself prove drop-in compatibility. Before releasing an alternative ordering code, compare CZH ball assignments, power rails, boot straps, clock generation, DDR3 configuration, peripheral population, reset behavior, and software initialization. The C6677-family alternatives may provide different internal processor resources even though they retain the same package. Document any substitution as a controlled board variant, re-run timing and thermal validation, and verify that the replacement software supports every peripheral and memory feature used by the product.
合规信息
The manufacturer identifies the TMS320C6655 device as active. Formal RoHS, REACH, AEC-Q100, lead-free, halogen-free, and conflict-minerals declarations are not stated in the referenced product-page snippets and require confirmation from the manufacturer product documentation.
