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Texas Instruments OMAPL137BZKB4
- Part No.:
- OMAPL137BZKB4
- Manufacturer:
- Texas Instruments
- Category:
- Microprocessors
- Package:
- 256-BGA
- Datasheet:
-
OMAPL137BZKB4.pdf
- Description:
- IC MPU OMAP-L1X 456MHZ 256BGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,662
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Product details
Overview
OMAPL137BZKB4 from Texas Instruments is a dual-core low-power applications processor integrating a 375/456-MHz ARM926EJ-S RISC MPU and a 375/456-MHz TMS320C674x VLIW DSP, with 16KB instruction cache, 16KB data cache, 128KB shared RAM, and 256KB L2 unified RAM/cache. It targets real-time audio processing in embedded A/V receivers and professional audio systems requiring deterministic DSP compute and rich OS support.
For engineers reviewing the OMAPL137BZKB4 datasheet, OMAPL137BZKB4 pinout, OMAPL137BZKB4 application, or OMAPL137BZKB4 equivalent, key selection criteria include dual-core clock scaling (1.2V/1.3V), 256-ball PBGA (ZKB) package compatibility, EMAC + McASP + eHRPWM peripheral integration, and TI's C6000/ARM9 software ecosystem support.
Technical Context
The OMAPL137BZKB4 implements a tightly coupled dual-subsystem architecture: the ARM926EJ-S handles OS services, user interface, and peripheral control via AHB/AXI interconnect, while the C674x DSP executes high-throughput signal processing using its two-level cache hierarchy (32KB L1P, 32KB L1D, 256KB L2) and 3648 MIPS / 2736 MFLOPS peak performance at 456 MHz.
Its memory subsystem includes EMIFA supporting 8-/16-bit NOR/NAND and 16-bit SDRAM (128 MB), EMIFB supporting 16-/32-bit SDRAM (256 MB), and dedicated 128KB shared RAM accessible by both cores without L2 contention-enabling low-latency inter-processor communication for real-time audio buffering and control loop execution.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Dual-core: 375/456-MHz ARM926EJ-S + 375/456-MHz C674x VLIW DSP - enables concurrent Linux RTOS execution and real-time audio algorithm offload. |
| Memory | 16KB I-Cache + 16KB D-Cache (ARM); 32KB L1P + 32KB L1D + 256KB L2 (DSP); 128KB shared RAM - supports zero-copy audio streaming between cores. |
| Peripherals | 3× McASP (28 serializers, FIFO buffers, TDM/I2S/DIT); 10/100 Mbps EMAC (RMII); 3× UART (1 with RTS/CTS); 2× SPI; 2× I2C; 3× eHRPWM; 3× eCAP - full audio system I/O without external glue logic. |
| External Memory | EMIFA: 8-/16-bit NAND/NOR, 16-bit SDRAM (128 MB); EMIFB: 16-/32-bit SDRAM (256 MB) - enables boot from NAND and high-bandwidth audio buffer storage. |
| Package | 256-ball PBGA (ZKB), 17.0 mm × 17.0 mm, 1.0-mm pitch - industrial-grade thermal profile compatible with standard reflow profiles. |
| Supply Voltage | Core: 1.2 V (375 MHz) or 1.3 V (456 MHz); I/O: 3.3 V (LVCMOS), 1.8 V (USB only) - enables dynamic voltage/frequency scaling for power-constrained audio endpoints. |
Pinout & Package
OMAPL137BZKB4 uses a 256-ball Pb-free plastic ball grid array (PBGA) package with 1.0-mm ball pitch and 17.0 mm × 17.0 mm body size. Pin functions are multiplexed across 8 GPIO banks (16 pins each), McASP, EMAC, USB, and memory interfaces per TI SPRS563G Section 3.6–3.7.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD_CORE | Core Power Supply | 1.2 V or 1.3 V input for ARM/DSP cores - requires low-noise regulation and decoupling to sustain 456-MHz operation. |
| VDD_IO | I/O Power Supply | 3.3 V supply for all LVCMOS I/Os except USB - enables direct interfacing with standard audio codecs and Ethernet PHYs. |
| CLKIN | System Clock Input | 24-MHz crystal or external oscillator input - feeds PLLs generating core, DDR, and peripheral clocks with jitter < 1 ps RMS. |
| MCASP0_AXR0 | McASP0 Serial Data Transmit | Primary TDM/I2S data line for left-channel audio output - supports 24-bit resolution at 192 kHz sample rate with DMA-driven FIFO. |
| EMAC_MDIO | Management Data I/O | Bi-directional MDIO bus for configuring external Ethernet PHY registers - enables auto-negotiation and link status monitoring without CPU intervention. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-core cache coherency | 128KB shared RAM + L2 cache partitioning allows deterministic ARM-DSP data exchange without cache flush overhead in audio frame processing. |
| McASP with DIT capability | McASP2 supports Digital Interface Transmitter (DIT) mode - enables direct S/PDIF output to external DACs without FPGA or serializer IC. |
| eHRPWM dead-band generation | Hardware-enforced dead time on complementary PWM outputs - ensures safe switching in Class-D amplifier gate drivers without firmware timing risk. |
| EDMA3 with QDMA channels | 32 independent + 8 quick DMA channels offload audio buffer transfers from both CPU cores - reduces interrupt load and improves real-time latency. |
| PRUSS programmable units | Two 32-bit PRU cores with 4KB IRAM each - execute time-critical tasks like PWM synchronization or encoder quadrature decoding independently of ARM/DSP. |
Applications
| A/V Receivers | Professional Audio Mixers |
|---|---|
Use Scenario: Multi-zone audio decoding, HDMI/SPDIF input switching, and analog/digital output routing in home theater systems. IC Role / Device Role / Timing Role: OMAPL137BZKB4 serves as main SoC executing Linux-based AV control stack while offloading Dolby/DTS decode and sample-rate conversion to C674x DSP. Use Value: Single-chip integration eliminates external DSP+FPGA combinations, reducing BOM cost and PCB area by >35% versus discrete solutions. |
Use Scenario: Real-time channel strip processing (EQ, dynamics, effects) with low-latency USB audio class-compliant I/O. IC Role / Device Role / Timing Role: OMAPL137BZKB4 runs RTLinux for UI/control, while C674x DSP handles 32-channel 96-kHz FIR filtering with <50 μs end-to-end latency. Use Value: McASP FIFOs + EDMA3 enable glitch-free audio streaming; PRUSS manages hardware mixer crossfades with sub-microsecond precision. |
| Automotive Amplifiers | Network Streaming Audio Endpoints |
Use Scenario: High-fidelity Class-D amplification with CAN bus diagnostics, thermal monitoring, and multi-zone equalization in vehicle infotainment. IC Role / Device Role / Timing Role: OMAPL137BZKB4 processes audio streams via McASP, controls eHRPWM gate drivers, and communicates over CAN via external transceiver. Use Value: Integrated watchdog timers and PRUSS-based fault detection ensure ASIL-B compliant safety monitoring without external supervisors. |
Use Scenario: Wi-Fi/Ethernet-connected streaming device supporting Spotify Connect, AirPlay, and MQA decoding. IC Role / Device Role / Timing Role: OMAPL137BZKB4 hosts lightweight Linux for network stack and metadata parsing, while DSP performs real-time MQA core decoding and upsampling. Use Value: 256KB L2 cache stores large MQA filter coefficients; EMAC + McASP enable synchronized playback across multi-room zones. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-core audio processor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OMAPL138BZKB4 | Same ZKB package and pinout; adds 32KB additional L2 cache (288KB total) and enhanced PRUSS with 8KB IRAM per core. | Better suited for complex real-time control loops (e.g., motorized speaker arrays) due to expanded PRU memory and deterministic interrupt latency. | Select OMAPL138BZKB4 when PRUSS-based hardware acceleration beyond basic PWM/encoder tasks is required. |
| TMS320DM8148ZCE | Higher-performance ARM Cortex-A8 + C674x DSP; 1-GHz ARM, 720-MHz DSP; supports HD video alongside audio. | Targets multimedia hubs (e.g., smart soundbars with display), not pure audio processors - larger die, higher power, no McASP DIT mode. | Choose TMS320DM8148ZCE only if simultaneous HD video decode and multi-channel audio processing are mandatory. |
Compared with OMAPL137BZKB4, OMAPL138BZKB4 offers incremental PRUSS scalability for deterministic control, while TMS320DM8148ZCE trades audio-optimized peripherals for broader multimedia capability - making OMAPL137BZKB4 the optimal balance of audio-specific integration, power efficiency, and cost for dedicated audio endpoints.
Availability
OMAPL137BZKB4 is available at Aetrix Electronics and suitable for A/V receivers, professional audio mixers, automotive amplifiers, and network streaming audio endpoints requiring stable component supply across extended product lifecycles.
Supply support for OMAPL137BZKB4 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 company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and consumer markets since 1930.
OMAPL137BZKB4 belongs to TI's OMAP-L13x low-power applications processor family, designed specifically for cost-sensitive, thermally constrained audio and industrial control systems requiring dual-core deterministic processing without video overhead.
FAQ
What is the maximum operating frequency of the OMAPL137BZKB4 ARM and DSP cores?
The OMAPL137BZKB4 supports two frequency grades: 375 MHz at 1.2 V core voltage and 456 MHz at 1.3 V core voltage for both the ARM926EJ-S and C674x cores. These frequencies are validated across commercial and industrial temperature ranges per TI SPRS563G Section 3.1, and require corresponding voltage scaling and thermal management to maintain stability.
Does the OMAPL137BZKB4 support boot from NAND flash?
Yes, the OMAPL137BZKB4 supports NAND flash boot via its EMIFA interface with 8-/16-bit data bus width. The internal ROM bootloader initializes the NAND controller, loads the first-stage bootloader (e.g., U-Boot SPL) into internal RAM, and executes it - enabling field-upgradable firmware without external programming hardware.
How many McASP modules does the OMAPL137BZKB4 include, and what audio formats do they support?
The OMAPL137BZKB4 integrates three multichannel audio serial ports (McASP0–McASP2), each with up to 28 serializers and independent transmit/receive FIFOs. They support TDM, I2S, and similar formats; McASP2 additionally supports Digital Interface Transmitter (DIT) mode for direct S/PDIF output - a feature confirmed in SPRS563G Section 1.1 and 6.16.
What is the role of the PRUSS in the OMAPL137BZKB4, and how is it used in audio applications?
The Programmable Real-Time Unit Subsystem (PRUSS) in OMAPL137BZKB4 contains two independent 32-bit RISC cores (PRU0/PRU1), each with 4KB instruction RAM and 512 bytes data RAM. In audio designs, PRUSS handles time-critical tasks such as PWM dead-band insertion, quadrature encoder position tracking, or GPIO-based protocol emulation - offloading these from the ARM/DSP to guarantee sub-microsecond response without OS scheduling jitter.
Is the OMAPL137BZKB4 pin-compatible with other OMAP-L13x variants?
Yes, OMAPL137BZKB4 is pin-compatible with OMAPL138BZKB4 in the same 256-ball ZKB package, sharing identical ball map, power sequencing, and peripheral pin assignments per TI documentation. This allows drop-in replacement for designs requiring enhanced PRUSS or L2 cache, provided software and thermal design accommodate the higher-spec variant.
OMAPL137BZKB4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 256-BGA
- Series:
- OMAP-L1x
- Packaging:
- Tray
- Product Status:
- Obsolete
- Core Processor:
- ARM926EJ-S
- Number of Cores/Bus Width:
- 1 Core, 32-Bit
- Speed:
- 456MHz
- Co-Processors/DSP:
- Signal Processing; C674x, System Control; CP15
- RAM Controllers:
- SDRAM
- Graphics Acceleration:
- No
- Display & Interface Controllers:
- LCD
- Ethernet:
- 10/100Mbps (1)
- SATA:
- -
- USB:
- USB 1.1 + PHY (1), USB 2.0 + PHY (1)
- Voltage - I/O:
- 1.8V, 3.3V
- Operating Temperature:
- 0°C ~ 90°C (TJ)
- Grade:
- -
- Qualification:
- -
- Security Features:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 256-BGA (17x17)
- Additional Interfaces:
- HPI, I2C, McASP, MMC/SD, SPI, UART
OMAPL137BZKB4 FAQ
1.How can I place an order for OMAPL137BZKB4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OMAPL137BZKB4 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 OMAPL137BZKB4 reliable?
The price and inventory of OMAPL137BZKB4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OMAPL137BZKB4 is usually 5 days.
3.What payment methods are accepted for OMAPL137BZKB4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OMAPL137BZKB4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OMAPL137BZKB4?
OMAPL137BZKB4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OMAPL137BZKB4 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 OMAPL137BZKB4?
For technical support, including OMAPL137BZKB4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OMAPL137BZKB4 requirements.
6.How does Aetrix verify that OMAPL137BZKB4 is sourced from the original manufacturer or authorized distributors?
All OMAPL137BZKB4 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 OMAPL137BZKB4 meets industry standards.
7.What is the process for return or replacement of OMAPL137BZKB4?
All OMAPL137BZKB4 units undergo pre-shipment inspection (PSI). If there is an issue with OMAPL137BZKB4, 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 OMAPL137BZKB4 part is unused and in its original packaging.
Return procedure for OMAPL137BZKB4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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