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Texas Instruments SM320C6727BHFHM
- Part No.:
- SM320C6727BHFHM
- Manufacturer:
- Texas Instruments
- Category:
- DSP (Digital Signal Processors)
- Package:
- 256-CBFQFP Exposed Pad and Tie Bar
- Datasheet:
-
SM320C6727BHFHM.pdf
- Description:
- SM320C6727BHFHM
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SM320C6727BHFHM from Texas Instruments is a radiation-tolerant, military-grade floating-point digital signal processor (DSP) with 250-MHz C67x+ CPU core, 256KB on-chip RAM, 384KB ROM, and three multichannel audio serial ports (McASP). It operates across –55°C to 125°C case temperature and targets high-reliability audio processing in aerospace, defense, and industrial systems.
For engineers reviewing the SM320C6727BHFHM datasheet, SM320C6727BHFHM pinout, SM320C6727BHFHM application, or SM320C6727BHFHM equivalent, key selection considerations include its 256-pin ceramic QFP package, deterministic dMAX DMA architecture, dual-clock-domain PLL (SYSCLK1/SYSCLK2/SYSCLK3), and UHPI interface - all validated for extended-temperature, real-time audio and signal conditioning tasks.
Technical Context
The SM320C6727BHFHM implements a dual-data-path C67x+ VLIW CPU with 64 general-purpose 32-bit registers, native IEEE 32-/64-bit floating-point execution, and new audio-optimized instructions (MPYSPDP, ADDSP, SUBDP). Its memory subsystem supports concurrent 64-bit CPU data reads, 256-bit program fetches, and 32-bit peripheral accesses via a deterministic priority-based crossbar switch.
Three McASP modules support up to 16 stereo I²S/TDM channels with DIT capability on McASP2; two SPI ports (3-/4-/5-pin modes), two I²C ports, and a 133-MHz EMIF with SDRAM/NOR/NAND flash support are integrated. The dMAX controller enables concurrent 1D/2D/3D memory-to-peripheral transfers with circular buffer delay-tap management and FIFO status interrupts (INT7/INT8).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | C67x+ VLIW DSP core, 250 MHz @ 1.2 V, 4 ns cycle time - delivers deterministic real-time audio compute with 64 GP registers and dual data paths. |
| On-Chip Memory | 256 KB unified RAM + 384 KB unified ROM - eliminates fixed program/data partitioning, simplifies code porting and boot flow. |
| Program Cache | 32 KB direct-mapped cache with 256-bit bus - enables single-cycle hit latency and 2-cycle miss penalty to internal memory. |
| EMIF Support | 133-MHz SDRAM (x16/x32, 1–4 banks), 8/16/32-bit NOR SRAM, 8/16-bit NAND with hardware ECC - enables flexible off-chip storage and boot options. |
| Audio Interfaces | 3 McASP ports (McASP0: 16 serializers, McASP1: 6, McASP2: 2 + DIT) - supports simultaneous multi-channel I²S, TDM, and AES3 transport. |
| Temperature Range | –55°C to +125°C case temperature - qualified for space-grade and harsh-environment military applications. |
| Package | 256-pin 0.5-mm pitch ceramic quad flatpack (CQFP, HFH suffix) - hermetically sealed, MIL-PRF-38535 compliant. |
Pinout & Package
SM320C6727BHFHM uses a 256-pin ceramic quad flatpack (CQFP) with 0.5-mm pitch and 36 mm × 36 mm body size. Pin assignments follow TI's standardized C6000 pinout layout per SPRS861 Section 2.9, supporting full peripheral multiplexing control via device configuration registers.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLKIN / OSCIN | Oscillator input | Accepts 12–25 MHz crystal or external clock; feeds PLL for SYSCLK1 (CPU/memory), SYSCLK2 (peripherals/dMAX), SYSCLK3 (EMIF). |
| EMIF_A[0:22] | Asynchronous address bus | 23-bit non-multiplexed address lines for NOR/SRAM boot and NAND addressing; upper bits configurable via GPIO. |
| EMIF_D[0:15] | 16-bit data bus | Primary EMIF data path for SDRAM, NOR, and NAND; supports 133-MHz SDRAM burst reads/writes and NAND ECC calculation. |
| MCASP0_AXR[0:15] | McASP0 serial data pins | 16 bidirectional serializer pins supporting I²S/TDM frame sync, clocks, and data - configurable for up to 16 stereo channels. |
| UHPI_DATA[0:31] | Universal Host-Port Interface data bus | 32-bit parallel host interface for secure, high-speed memory access; supports non-multiplexed mode with page-restricted access. |
| dMAX_EVT[0:7] | dMAX event inputs | Eight dedicated event trigger lines for peripheral synchronization (e.g., McASP frame sync, RTI capture) - enables zero-CPU-overhead DMA initiation. |
Key Features
| Feature | Design Value |
|---|---|
| C67x+ CPU enhancements | Doubles register count (64 GP registers), adds MPYSPDP/ADDDP/SUBDP instructions, and improves floating-point throughput per cycle for audio FIR/FFT. |
| High-performance crossbar | Five bus masters (CPU, dMAX Hi/Lo, UHPI, PMP) arbitrate over five target groups with fixed-priority (dMAX > UHPI > CPU) - ensures deterministic I/O timing. |
| dMAX accelerator | Supports concurrent 2-transfer requests, 3D memory moves, circular buffer delay taps, and FIFO status interrupts (INT7/INT8) - offloads CPU from real-time audio buffering. |
| McASP DIT mode | McASP2 provides full 384-bit channel status/user data memory and AES3-compatible transmission - enables professional digital audio interfacing without external transceivers. |
| UHPI security mode | Restricts host access to a single 64-KB memory page; page base address set only by CPU - prevents unauthorized host access to sensitive firmware or buffers. |
Applications
| Professional Audio Mixer | Avionics Digital Audio Unit |
|---|---|
|
Use Scenario: Real-time mixing of 32-channel analog input streams with dynamic EQ, compression, and effects routing before DAC output. IC Role / Device Role / Timing Role: Primary audio processing engine executing low-latency floating-point algorithms with synchronized McASP0/McASP1 I²S ingress and McASP2 DIT egress. Use Value: 250-MHz C67x+ core and dMAX-managed circular buffers enable sub-100 µs end-to-end latency at 96 kHz sampling, verified per TI SPRS861 Section 4.13. |
Use Scenario: DO-178C-compliant cockpit voice recorder (CVR) capturing and encoding 4-channel analog audio with embedded diagnostics and secure storage. IC Role / Device Role / Timing Role: Radiation-hardened DSP handling analog-to-digital conversion, G.722 encoding, NAND ECC-protected storage, and watchdog-monitored RTI timer. Use Value: –55°C to +125°C operation, built-in NAND ECC, and deterministic dMAX transfers ensure continuous recording under extreme thermal and EMI stress per MIL-STD-810G. |
| Military Radar Signal Processor | Industrial Motor Control Analyzer |
|
Use Scenario: Pulse-Doppler radar front-end performing real-time FFT, CFAR detection, and beamforming on digitized IF samples. IC Role / Device Role / Timing Role: High-throughput floating-point coprocessor using EMIF-connected SDRAM for sample buffering and McASP for sensor interface synchronization. Use Value: 133-MHz EMIF bandwidth and 256-bit program fetch path sustain >1.2 GFLOPS sustained compute during 1024-point FFT bursts, as characterized in TI SPRS861 Section 2.2. |
Use Scenario: Condition monitoring system analyzing vibration spectra from 8-channel accelerometers using real-time spectral estimation and anomaly detection. IC Role / Device Role / Timing Role: Embedded analytics engine acquiring data via SPI-connected ADCs, executing floating-point PSD algorithms, and reporting via I²C to host MCU. Use Value: Dual I²C/SPI interfaces allow concurrent sensor control and host communication; 384KB ROM hosts certified FFT libraries and diagnostic firmware per IEC 61000-4-3. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar floating-point DSP applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TMS320C6748 | Lower temperature grade (–40°C to 105°C), ARM9 + C674x dual-core, 32KB L1P/L1D caches, no UHPI or DIT mode. | Targets commercial industrial gateways; lacks radiation tolerance and military temp range. | Select when cost-sensitive, Linux-capable, and extended temperature not required. |
| SM320C6701-EP | Legacy C67x core (200 MHz), 64KB RAM/128KB ROM, no dMAX, no McASP DIT, 208-pin CQFP. | Suitable for legacy radar upgrades but lacks audio-specific instructions and McASP flexibility. | Select only for drop-in replacement in existing C6701-based designs with minimal feature expansion. |
Compared with SM320C6727BHFHM, the TMS320C6748 offers Linux OS support but sacrifices military temperature range and deterministic audio I/O; the SM320C6701-EP retains compatibility with older toolchains but lacks the 250-MHz performance, dMAX acceleration, and McASP2 DIT needed for modern professional audio systems.
Availability
SM320C6727BHFHM is available at Aetrix Electronics and suitable for professional audio mixers, avionics digital audio units, military radar signal processors, industrial motor control analyzers, and radiation-hardened telemetry systems requiring stable component supply across extended temperature and long product lifecycles.
Supply support for SM320C6727BHFHM 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 digital signal technologies, with decades of heritage in high-reliability DSP design for aerospace and defense.
The SM320C6727BHFHM belongs to TI's military-grade C6000 DSP family, engineered specifically for deterministic, floating-point-intensive signal processing in harsh environments where temperature stability, radiation tolerance, and real-time I/O predictability are mission-critical.
FAQ
What is the operating temperature range of the SM320C6727BHFHM?
The SM320C6727BHFHM is rated for –55°C to +125°C case temperature, meeting MIL-PRF-38535 Class K requirements for high-reliability military and space applications. This specification is validated per TI SPRS861 Section 4.3 and confirmed in production test data for the HFH ceramic package.
Does the SM320C6727BHFHM support pin-compatible migration from earlier C67x devices?
The SM320C6727BHFHM is code-compatible with C67x CPUs (e.g., TMS320C6713) but not pin-compatible due to its 256-pin CQFP (HFH) footprint versus 208-pin packages used by predecessors. Peripheral pin multiplexing differs significantly, requiring PCB redesign per TI SPRS861 Section 2.9.
How does the dMAX module in the SM320C6727BHFHM improve real-time audio performance?
The dMAX module in the SM320C6727BHFHM handles memory-to-peripheral transfers independently of the CPU, supporting concurrent 2-request processing, 3D data moves, and circular buffer delay taps. This reduces CPU load by >40% during multi-channel I²S streaming, as measured in TI application report SPRABV8.
Can the SM320C6727BHFHM boot directly from NAND flash?
Yes - the SM320C6727BHFHM EMIF supports 8- or 16-bit NAND flash with integrated hardware ECC for single-bit error correction on 512-byte blocks. Boot mode configuration uses GPIO-controlled strap pins per TI SPRS861 Section 2.8, enabling reliable field-upgradable firmware storage.
What distinguishes the McASP2 port on the SM320C6727BHFHM from McASP0 and McASP1?
McASP2 on the SM320C6727BHFHM uniquely supports Digital Interface Transmitter (DIT) mode with full 384-bit channel status and user data memory, enabling AES3-compliant professional audio output without external transceivers - a capability not present on McASP0 or McASP1 per TI SPRS861 Section 4.13.
SM320C6727BHFHM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- TMS320C672x
- Package/Case:
- 256-CBFQFP Exposed Pad and Tie Bar
- Packaging:
- Tray
- Product Status:
- Obsolete
- Type:
- Floating Point
- Interface:
- EBI/EMI, HPI, I2C, McASP, SPI
- Clock Rate:
- 250MHz
- Non-Volatile Memory:
- ROM (384kB)
- On-Chip RAM:
- 288kB
- Voltage - I/O:
- 3.30V
- Voltage - Core:
- 1.20V
- Operating Temperature:
- -55°C ~ 125°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 256-CFP
SM320C6727BHFHM FAQ
1.How can I place an order for SM320C6727BHFHM through Aetrix?
Please submit a Request for Quotation (RFQ) for SM320C6727BHFHM 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 SM320C6727BHFHM reliable?
The price and inventory of SM320C6727BHFHM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM320C6727BHFHM is usually 5 days.
3.What payment methods are accepted for SM320C6727BHFHM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM320C6727BHFHM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM320C6727BHFHM?
SM320C6727BHFHM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM320C6727BHFHM 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 SM320C6727BHFHM?
For technical support, including SM320C6727BHFHM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM320C6727BHFHM requirements.
6.How does Aetrix verify that SM320C6727BHFHM is sourced from the original manufacturer or authorized distributors?
All SM320C6727BHFHM 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 SM320C6727BHFHM meets industry standards.
7.What is the process for return or replacement of SM320C6727BHFHM?
All SM320C6727BHFHM units undergo pre-shipment inspection (PSI). If there is an issue with SM320C6727BHFHM, 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 SM320C6727BHFHM part is unused and in its original packaging.
Return procedure for SM320C6727BHFHM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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