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Texas Instruments SMJ320C40GFM50
- Part No.:
- SMJ320C40GFM50
- Manufacturer:
- Texas Instruments
- Category:
- DSP (Digital Signal Processors)
- Package:
- 325-BFCPGA Exposed Pad
- Datasheet:
-
SMJ320C40GFM50.pdf
- Description:
- MILITARY GRADE C40 FLOATING-POIN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMJ320C40GFM50 from Texas Instruments is a radiation-hardened, military-grade 32-bit floating-point digital signal processor (DSP) designed for high-throughput parallel signal processing in embedded real-time systems. It delivers 50 MFLOPS, 25 MIPS, and 275 MOPS at 40-ns instruction cycle time, with six on-chip communication ports and dual external buses supporting 100 MBps per bus - deployed in radar beamforming, sonar array processing, and onboard telemetry systems.
For engineers reviewing the SMJ320C40GFM50 datasheet, SMJ320C40GFM50 pinout, SMJ320C40GFM50 application, or SMJ320C40GFM50 equivalent, key selection criteria include IEEE-754 single-cycle floating-point conversion, MIL-PRF-38535 Class V QML qualification, 352-lead ceramic quad flatpack (HFH) packaging, and support for shared-memory multiprocessor topologies with hardware bus arbitration.
Technical Context
The SMJ320C40GFM50 implements an eight-operation-per-cycle CPU architecture with concurrent 40-bit floating-point multiply, ALU operation, two data accesses, and two address-register updates. Its dual-bus structure separates program, data, and DMA coprocessor traffic to sustain peak throughput without I/O bottlenecks.
It integrates a six-channel smart DMA coprocessor with auto-initializing link pointers and split-mode operation (12 logical channels), plus six bidirectional 20-MBps communication ports with 8-word FIFOs and automatic handshaking - enabling direct processor-to-processor interconnect without glue logic in deterministic real-time systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Processing Type | 32-bit floating-point DSP with IEEE-754 compliance and single-cycle format conversion |
| Performance | 50 MFLOPS / 25 MIPS / 275 MOPS at 40-ns instruction cycle time |
| Memory Architecture | Dual external buses (global + local), 16-Gbyte continuous address space, 512-byte instruction cache, 8-KB dual-access RAM |
| I/O Throughput | Two 100-MBps external data buses; six 20-MBps communication ports with FIFO buffering |
| On-Chip Peripherals | Six-channel DMA coprocessor, two 32-bit timers, IEEE 1149.1 JTAG test port, ROM-based bootloader |
| Operating Range | Military temperature range: –55°C to +125°C per MIL-PRF-38535 |
| Process Technology | 0.72-μm double-level metal CMOS using TI's EPIC™ enhanced performance implanted process |
Pinout & Package
SMJ320C40GFM50 is packaged in a 352-lead ceramic quad flatpack (HFH), optimized for high-reliability military applications with low-noise power/ground pin distribution. Pin assignments follow TI's standardized HFH layout with dedicated global/local bus interfaces, six communication port banks, JTAG emulation signals, and dual clock outputs (H1/H3).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| D31–D0 | Global bus data I/O | 32-bit bidirectional data path for high-speed memory/peripheral access on global bus |
| A30–A0 | Global bus address output | 31-bit address bus supporting 16-Gbyte linear addressing with page/strobe control |
| C0D7–C0D0 | Comm Port 0 data I/O | 8-bit bidirectional interface for processor-to-processor messaging with token-handshake protocol |
| TCK/TDO/TDI/TMS/TRST | JTAG boundary-scan interface | IEEE 1149.1-compliant test access port for in-system debug and production testing |
| H1/H3 | Master clock outputs | Complementary 180° phase clocks derived from internal PLL; used for synchronous system timing |
| RESET/RESETLOC0/RESETLOC1 | Reset control and vector location | Asynchronous reset input with configurable boot-vector address selection (ROM vs. external memory) |
Key Features
| Feature | Design Value |
|---|---|
| Source-code compatibility with SMJ320C30 | Enables migration of legacy C3x firmware without assembly rewrite, reducing requalification effort in avionics upgrades |
| Single-cycle 40-bit floating-point multiplier | Eliminates pipeline stalls during intensive math operations, critical for real-time FFT and filter kernels |
| Separate program/data/DMA buses | Prevents bus contention during concurrent instruction fetch, data load/store, and DMA transfers - sustaining >90% CPU utilization |
| IDLE2 clock-stop power-down mode | Halts all clocks while preserving register and memory state; exited by NMI or IIOF interrupts - extends battery life in portable defense systems |
| Hardware bus arbitration with memory-access request | Enables intelligent multi-DSP shared-memory systems without external arbiter logic, simplifying board layout and timing closure |
Applications
| Radar Signal Processing | Sonar Array Beamforming |
|---|---|
Use Scenario: Real-time pulse compression and Doppler filtering in airborne fire-control radars operating under EMI-heavy environments. IC Role / Device Role / Timing Role: Primary compute engine executing fixed-point and floating-point algorithms with deterministic latency via dual-bus memory access. Use Value: 50 MFLOPS sustained throughput enables sub-millisecond response for track-while-scan modes; MIL-spec packaging ensures reliability at –55°C to +125°C. | Use Scenario: Synchronized acquisition and beam-steering across 128 hydrophone channels in submarine towed-array sonar systems. IC Role / Device Role / Timing Role: Node processor in distributed multiprocessor architecture, communicating via six C40 ports to aggregate channel data. Use Value: Hardware FIFOs and token-based handshaking eliminate software overhead; 20-MBps port bandwidth supports full-rate 16-bit sample streaming. |
| Telemetry Data Encoder | Electronic Warfare Front-End |
Use Scenario: Onboard encoding, encryption, and packetization of sensor telemetry for satellite downlink in launch vehicle guidance systems. IC Role / Device Role / Timing Role: Real-time DSP co-processor handling Reed-Solomon encoding, AES-128, and frame formatting before RF modulation. Use Value: ROM-based bootloader enables secure cold-start; validated Ada compiler support satisfies DO-178B certification requirements. | Use Scenario: Wideband signal detection and direction-finding in ground-mobile electronic support measures (ESM) platforms. IC Role / Device Role / Timing Role: High-speed front-end correlator and FFT accelerator interfacing directly to ADCs via local bus and DMA. Use Value: Dual-access RAM allows simultaneous coefficient table read and sample buffer write; 8-KB on-chip memory reduces off-chip latency for L1 cache misses. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar floating-point DSP applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMJ320C40GFM60 | Higher speed grade: 60 MFLOPS / 33-ns cycle time; identical pinout and feature set | Required where algorithm latency budgets demand <15-ns instruction dispatch; same thermal and mechanical footprint | Select when sustained computational throughput exceeds 50 MFLOPS threshold in mission-critical loops |
| SMJ320C30GFM50 | Lower-performance predecessor: 33 MFLOPS, no on-chip communication ports, single external bus | Used in cost-sensitive subsystems where interprocessor messaging is handled externally or not required | Choose only for legacy C3x codebases lacking C40-specific features like split-mode DMA or dual-bus arbitration |
Compared with SMJ320C40GFM60, the SMJ320C40GFM50 trades 10 MFLOPS for lower power and thermal dissipation in conduction-cooled chassis; versus SMJ320C30GFM50, it adds six hardware communication ports and dual-bus concurrency - eliminating external glue logic and enabling scalable multiprocessor architectures.
Availability
SMJ320C40GFM50 is available at Aetrix Electronics and suitable for radar signal processing, sonar beamforming, telemetry encoding, and electronic warfare front-end applications requiring stable component supply across extended product lifecycles.
Supply support for SMJ320C40GFM50 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 U.S.-based semiconductor company specializing in analog, embedded processing, and aerospace-grade ICs with over 50 years of defense electronics heritage.
The SMJ320C40 series belongs to TI's fourth-generation C4x DSP family, engineered specifically for deterministic, high-throughput parallel processing in radiation-tolerant, temperature-extended military and spaceborne systems.
FAQ
What is the operating temperature range certified for SMJ320C40GFM50?
The SMJ320C40GFM50 is qualified to MIL-PRF-38535 Class V standards with a guaranteed operating temperature range of –55°C to +125°C. This rating is verified through temperature cycling, burn-in, and parametric testing per military specification - making it suitable for deployment in jet engine bays, missile guidance sections, and space-qualified payloads where ambient extremes exceed commercial or industrial limits. The SMJ320C40GFM50 maintains full functional performance across this entire range without derating.
Does SMJ320C40GFM50 support IEEE 1149.1 boundary-scan testing?
Yes, the SMJ320C40GFM50 integrates a fully compliant IEEE 1149.1 Test Access Port (TAP) controller with TCK, TDO, TDI, TMS, and TRST pins. This enables boundary-scan testing of PCB interconnects, in-system programming, and debug visibility during production test and field maintenance. The TAP operates independently of CPU execution and supports standard JTAG instruction sets including SAMPLE/PRELOAD, EXTEST, and INTEST - critical for high-reliability aerospace manufacturing flow.
How many communication ports does SMJ320C40GFM50 provide, and what is their data rate?
The SMJ320C40GFM50 provides six independent, bidirectional communication ports (C0–C5), each supporting 20 MBps (160 Mbps) data transfer in both directions simultaneously. Each port includes dedicated 8-word input and output FIFOs, token-request/acknowledge signaling (CREQ/CACK), data strobe (CSTRB), and ready (CRDY) handshake lines - enabling zero-wait-state interprocessor messaging without CPU intervention. These ports are electrically isolated from external buses and operate autonomously under DMA control.
What package type is used for SMJ320C40GFM50, and how many pins does it have?
The SMJ320C40GFM50 uses a 352-lead ceramic quad flatpack (HFH) package, as confirmed by TI's SGUS017H datasheet and pin assignment tables. This hermetically sealed package features staggered lead rows, integrated power/ground pin redundancy for noise suppression, and is qualified for high-vibration, high-humidity military environments. The HFH footprint is distinct from the 325-pin GF grid array and 324-pad TAB variants - ensuring mechanical and thermal compatibility only within the HFH family.
Is SMJ320C40GFM50 pin-compatible with other C40 variants like SMJ320C40GFM60?
Yes, the SMJ320C40GFM50 is fully pin-compatible with other speed grades in the SMJ320C40 HFH package family, including SMJ320C40GFM60 and SMJ320C40GFM40. All share identical 352-lead HFH mechanical footprint, pin numbering, signal mapping, and power/ground distribution - allowing drop-in replacement based solely on speed and thermal requirements. No PCB redesign or layout change is needed when upgrading between these variants, provided the system's voltage regulation and cooling meet the higher-grade part's specifications.
SMJ320C40GFM50 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- TMS320C4x
- Package/Case:
- 325-BFCPGA Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Type:
- Floating Point
- Interface:
- Host Interface, McBSP
- Clock Rate:
- 50MHz
- Non-Volatile Memory:
- External
- On-Chip RAM:
- 8kB
- Voltage - I/O:
- 5V
- Voltage - Core:
- 5V
- Operating Temperature:
- -55°C ~ 125°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 325-CPGA (47.25x47.25)
SMJ320C40GFM50 FAQ
1.How can I place an order for SMJ320C40GFM50 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMJ320C40GFM50 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SMJ320C40GFM50 reliable?
The price and inventory of SMJ320C40GFM50 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMJ320C40GFM50 is usually 5 days.
3.What payment methods are accepted for SMJ320C40GFM50?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMJ320C40GFM50 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMJ320C40GFM50?
SMJ320C40GFM50 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMJ320C40GFM50 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SMJ320C40GFM50?
For technical support, including SMJ320C40GFM50 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMJ320C40GFM50 requirements.
6.How does Aetrix verify that SMJ320C40GFM50 is sourced from the original manufacturer or authorized distributors?
All SMJ320C40GFM50 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SMJ320C40GFM50 meets industry standards.
7.What is the process for return or replacement of SMJ320C40GFM50?
All SMJ320C40GFM50 units undergo pre-shipment inspection (PSI). If there is an issue with SMJ320C40GFM50, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SMJ320C40GFM50 part is unused and in its original packaging.
Return procedure for SMJ320C40GFM50:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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