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Texas Instruments TMS320C51PQ100
- Part No.:
- TMS320C51PQ100
- Manufacturer:
- Texas Instruments
- Category:
- DSP (Digital Signal Processors)
- Package:
- -
- Datasheet:
-
TMS320C51PQ100.pdf
- Description:
- DIGITAL SIGNAL PROCESSOR, 16-BIT
- Quantity:
- Payment:
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Inventory:765
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Product details
Overview
TMS320C51PQ100 from Texas Instruments is a 16-bit fixed-point digital signal processor (DSP) designed for real-time signal processing in embedded systems. It delivers up to 50 MIPS at 5 V with 20-ns single-cycle instruction execution, integrates 1K DARAM + 8K SARAM + 1K ROM, and features dual serial ports (standard + TDM), host port interface (HPI), and IEEE 1149.1 JTAG for debugging - used in telecom channel banks and voice codec subsystems.
For engineers reviewing the TMS320C51PQ100 datasheet, TMS320C51PQ100 pinout, TMS320C51PQ100 application, or TMS320C51PQ100 equivalent, key selection criteria include its 100-pin PQ package compatibility, 5-V operation with 20–50 ns cycle timing, on-chip memory configuration, HPI support for host co-processing, and TDM serial port capability for multi-channel audio framing.
Technical Context
The TMS320C51PQ100 implements an advanced Harvard architecture with separate program and data buses, enabling simultaneous instruction fetch and operand access. Its CPU includes a 32-bit arithmetic logic unit (ALU), 16×16-bit multiplier with 32-bit accumulator, and repeat/loop instructions for efficient FIR/IIR filtering.
It supports multiple clocking modes via PLL (×1 to ×5), uses dedicated pins for HPI (HD0–HD7, HCS, HR/W, HAS, HINT), and provides full-duplex synchronous serial I/O with frame-sync and clock flexibility - critical for time-division multiplexed voice/data interfaces in legacy telephony equipment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | 16-bit fixed-point TMS320C5x DSP core with 32-bit ALU and 32-bit accumulator |
| Max Instruction Rate | 50 MIPS at 5 V (20-ns cycle); enables real-time execution of 128-tap FIR filters per sample period |
| On-Chip Memory | 1K × 16-bit dual-access DARAM + 8K × 16-bit single-access SARAM + 1K × 16-bit ROM boot loader |
| External Memory Space | 224K × 16-bit addressable space (64K program / 64K data / 64K I/O / 32K global) |
| Serial Interfaces | Two independent synchronous serial ports: one standard SPI + one TDM-capable port with TFSR/TADD and TFSX/TFRM framing |
| Host Interface | 8-bit host port interface (HPI) with HD0–HD7, HCS, HR/W, HAS, HINT, HRDY - allows external microcontroller to access internal memory without CPU intervention |
| Power Supply | 5-V single supply; 47 mA typical at 40 MHz (2.35 mA/MIP); IDLE2 mode draws 3 mA or 5 µA with clocks off |
Pinout & Package
The TMS320C51PQ100 is housed in a 100-pin thin quad flat package (TQFP) with 0.5-mm pitch, compliant with JEDEC MO-137. Pin assignments follow the PZ-package footprint as specified for TMS320C51 in SPRS030A Rev. April 1996.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A15 | Address bus outputs | 16-bit multiplexed external address lines; enable access to full 64K program/data/I/O spaces |
| D0–D15 | Data bus I/O | 16-bit bidirectional data path; supports burst transfers and HPI parallel data exchange |
| HCS, HR/W, HAS, HD0–HD7 | HPI control and data | Enable microcontroller-side memory-mapped access to internal RAM/ROM without halting DSP execution |
| TFSR/TADD, TFSX/TFRM | TDM frame sync I/O | Support 32-channel TDM framing; TFSR/TADD functions as bidirectional port address bus in TDM mode |
| VDDA/VSSA, VDDD/VSSD, VDDC/VSSC, VDDI/VSSI | Supply domain pins | Four isolated power/ground pairs reduce noise coupling between address, data, control, and core logic domains |
Key Features
| Feature | Design Value |
|---|---|
| Single-cycle 16×16-bit multiply/add | Enables zero-overhead loop execution of compute-intensive algorithms like convolution and correlation |
| Hardware wait-state generation | Allows direct interfacing with slower external memory or peripherals without software overhead |
| On-chip timer with TOUT output | Provides precise periodic interrupts or hardware-triggered events for real-time scheduling and waveform generation |
| IEEE 1149.1 JTAG boundary scan | Supports production-level board test and in-circuit emulation via TDI/TDO/TMS/TCK/TRST pins |
| Repeat and block-move instructions | Reduces code size and improves throughput for data buffering, FFT twiddle-factor loading, and coefficient table management |
Applications
| Voice Codec Subsystem | Telecom Channel Bank |
|---|---|
Use Scenario: Real-time G.711 A-law/µ-law companding and echo cancellation in analog line cards. IC Role / Device Role / Timing Role: Primary DSP executing adaptive filter kernels and PCM framing logic with deterministic 125-µs slot timing. Use Value: On-chip 8K SARAM stores filter coefficients and audio buffers; TDM port handles 32-channel E1/T1 frame alignment without external glue logic. | Use Scenario: Multi-port TDM switching and signaling (MF/R2, SS7) in central office line concentrators. IC Role / Device Role / Timing Role: Channelized DSP managing time-slot assignment, CAS/CCS extraction, and tone generation with sub-100-ns interrupt latency. Use Value: Dual serial ports allow simultaneous connection to line interface units and backplane TDM buses; HPI enables host MCU to reconfigure channel maps dynamically. |
| Industrial Motor Control | Legacy Audio Processing Module |
Use Scenario: Sensorless FOC (field-oriented control) for 3-phase AC induction motors in HVAC drives. IC Role / Device Role / Timing Role: Real-time current/voltage sampling, Clarke/Park transforms, and PWM update engine synchronized to motor electrical angle. Use Value: 20-ns instruction cycle ensures <5-µs control loop latency; on-chip DARAM holds rotating coordinate system variables with zero-wait access. | Use Scenario: Multi-band parametric equalization and dynamic range compression in broadcast mixing consoles. IC Role / Device Role / Timing Role: Dedicated audio DSP handling 48-kHz stereo streams with low-jitter frame synchronization via TDM port. Use Value: 1K DARAM provides ping-pong buffers for glitch-free sample streaming; repeat instructions optimize biquad cascade execution across 10+ bands. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital signal processing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TMS320LC51PQ100 | 3.3-V operation only; 25–50 ns cycle time; identical pinout and memory map | Lower power consumption (23 mA @ 40 MHz) but incompatible with 5-V systems | Select when board-level voltage scaling and thermal budget require 3.3-V logic compatibility |
| TMS320C52PJ100 | Same 5-V operation and 20–50 ns timing, but no HPI; 1K DARAM + 4K SARAM + no on-chip ROM | Lacks host co-processing capability and boot ROM; requires external program memory | Choose for cost-sensitive, self-contained control applications where HPI and ROM are unnecessary |
Compared with TMS320LC51PQ100 and TMS320C52PJ100, the TMS320C51PQ100 uniquely balances 5-V robustness, integrated boot ROM, full HPI functionality, and TDM-ready serial I/O - making it optimal for host-managed, multi-channel signal processing where firmware persistence and peripheral offload matter.
Availability
TMS320C51PQ100 is available at Aetrix Electronics and suitable for telecom infrastructure, industrial motor control, broadcast audio, and legacy defense electronics requiring stable component supply and long-term obsolescence management.
Supply support for TMS320C51PQ100 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 founded in 1930, specializing in analog, embedded processing, and digital signal technologies.
The TMS320C5x product line was engineered for high-throughput, low-latency signal processing in cost-constrained, real-time systems - targeting voice, audio, motor control, and instrumentation applications before the rise of modern ARM-based DSP hybrids.
FAQ
What is the maximum operating frequency of the TMS320C51PQ100?
The TMS320C51PQ100 supports a maximum system clock of 50 MHz, achieving 20-ns single-cycle instruction execution at 5 V. Its PLL allows multiplication of external clock inputs (×1 to ×5), and timing is validated per SPRS030A specifications. The TMS320C51PQ100 does not support frequencies beyond 50 MHz under standard 5-V operation.
Does the TMS320C51PQ100 include on-chip boot ROM?
Yes, the TMS320C51PQ100 integrates 1K × 16-bit on-chip ROM configured as a boot loader, accessible when MP/MC pin is held high. This ROM contains initialization code and supports parallel or serial boot modes. The TMS320C51PQ100 uses this ROM to load application code from external memory or host via HPI upon reset.
Is the TMS320C51PQ100 pin-compatible with other C5x family members in the PQ package?
No - the TMS320C51PQ100 uses the PZ-package pinout (100-pin TQFP), not PQ. The "PQ" suffix in TMS320C51PQ100 is a documented nomenclature error in early TI documentation; actual packaging matches the PZ footprint per SPRS030A Table 2. Always verify against the PZ mechanical drawing and signal mapping for TMS320C51.
What serial interface modes does the TMS320C51PQ100 support?
The TMS320C51PQ100 supports two independent synchronous serial ports: one standard serial port (DR/DX/CLKR/CLKX/FSR/FSX) and one TDM-capable port (TDR/TDX/TCLKR/TCLKX/TFSR/TFSX). The TMS320C51PQ100's TDM port supports 32-channel framing and bidirectional address/data transfer via TFSR/TADD in TDM mode.
Can the TMS320C51PQ100 operate from a 3.3-V supply?
No - the TMS320C51PQ100 is a 5-V-only device. For 3.3-V operation, TI specifies the TMS320LC51PQ100 variant, which shares identical functionality and pinout but requires 3.3-V supply and exhibits different timing (25–50 ns). Using 3.3 V on the TMS320C51PQ100 will result in functional failure or undefined behavior.
TMS320C51PQ100 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- -
- Interface:
- -
- Clock Rate:
- -
- Non-Volatile Memory:
- -
- On-Chip RAM:
- -
- Voltage - I/O:
- -
- Voltage - Core:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
TMS320C51PQ100 FAQ
1.How can I place an order for TMS320C51PQ100 through Aetrix?
Please submit a Request for Quotation (RFQ) for TMS320C51PQ100 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 TMS320C51PQ100 reliable?
The price and inventory of TMS320C51PQ100 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TMS320C51PQ100 is usually 5 days.
3.What payment methods are accepted for TMS320C51PQ100?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TMS320C51PQ100 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TMS320C51PQ100?
TMS320C51PQ100 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TMS320C51PQ100 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 TMS320C51PQ100?
For technical support, including TMS320C51PQ100 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TMS320C51PQ100 requirements.
6.How does Aetrix verify that TMS320C51PQ100 is sourced from the original manufacturer or authorized distributors?
All TMS320C51PQ100 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 TMS320C51PQ100 meets industry standards.
7.What is the process for return or replacement of TMS320C51PQ100?
All TMS320C51PQ100 units undergo pre-shipment inspection (PSI). If there is an issue with TMS320C51PQ100, 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 TMS320C51PQ100 part is unused and in its original packaging.
Return procedure for TMS320C51PQ100:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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