Texas Instruments OMAPL138BZCE4

Overview

OMAPL138BZCE4 from Texas Instruments is a dual-core C674x DSP + ARM926EJ-S applications processor in a 361-ball NFBGA (13 mm × 13 mm, 0.65-mm pitch) package. It operates at 375 MHz (1.2 V core), integrates 256 KB L2 unified RAM/cache, 128 KB shared RAM, and supports DDR2/mDDR, EMIFA, SATA I/II, USB 2.0 OTG, and 10/100 Ethernet - enabling low-power industrial embedded systems with real-time signal processing and rich OS support.

For engineers reviewing the OMAPL138BZCE4 datasheet, OMAPL138BZCE4 pinout, OMAPL138BZCE4 application, or OMAPL138BZCE4 equivalent, key selection criteria include dual-core clock synchronization, secure boot capability (AES-128/SHA-256), peripheral multiplexing constraints, and thermal performance in ZCE-package industrial deployments.

Technical Context

The OMAPL138BZCE4 implements tightly coupled ARM926EJ-S and C674x VLIW DSP subsystems sharing memory via a unified L2 cache and 128 KB dedicated shared RAM. Its memory architecture includes separate 16 KB instruction/data caches for ARM and 32 KB L1P/L1D for DSP, with configurable L2 partitioning between cache and mapped RAM.

Peripheral integration uses a hierarchical bus fabric with EDMA3 (64 channels), PRUSS (two programmable real-time units), and pin-multiplexed interfaces including McASP (16 serializers), VPIF (dual-channel video I/O), uPP (8–16-bit parallel), and dual McBSP/McASP audio ports - all accessible under single PSC clock gating control.

Key Specifications

Pinout & Package

OMAPL138BZCE4 is housed in a 361-ball Pb-free NFBGA package (13.0 mm × 13.0 mm, 0.65-mm ball pitch, ZCE suffix). Pin functions are defined per TI SPRS586H Section 3.8 (Terminal Functions) and Section 3.6 (Pin Assignments), with full multiplexing support across 9 banks of GPIO and shared peripheral signals.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-core DSP+ARM applications.

Compared with OMAPL138BZCE4, the ZWT variant offers identical functionality at a larger footprint and higher thermal impedance, while the C6748 sacrifices ARM capabilities and security features for lower cost and power - making OMAPL138BZCE4 optimal for Linux-capable, secure, mixed-workload industrial designs requiring compact thermal management.

Availability

OMAPL138BZCE4 is available at Aetrix Electronics and suitable for industrial portable navigation devices, smart grid substation protection systems, remote radio units, and low-end machine vision equipment requiring stable component supply across extended product lifecycles.

Supply support for OMAPL138BZCE4 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 communications markets since 1930.

The OMAP-L138 product line was designed specifically for low-power, cost-sensitive industrial embedded applications requiring both real-time DSP compute and full-featured ARM-based OS support - bridging the gap between microcontrollers and high-end application processors.

FAQ

What is the maximum operating frequency of the OMAPL138BZCE4 and its corresponding core voltage?

The OMAPL138BZCE4 operates at a maximum frequency of 375 MHz with a nominal core supply voltage of 1.2 V. This voltage must be regulated within ±3% tolerance and supported by appropriate decoupling capacitors per TI SPRS586H Section 5.5. The 375-MHz speed point is validated for industrial temperature range (–40°C to 105°C) and defines the guaranteed performance envelope for both ARM926EJ-S and C674x cores simultaneously.

Does the OMAPL138BZCE4 support secure boot, and what cryptographic primitives are used?

Yes, the OMAPL138BZCE4 implements TI Basic Secure Boot using AES-128 for image decryption and SHA-1 or SHA-256 for signature validation. A device-specific 128-bit cipher key generated by an NIST-800-22 certified RNG protects user keys. Secure boot locks JTAG by default and validates encrypted images loaded from external flash or EEPROM before any code execution - ensuring trusted firmware startup in safety-critical deployments.

How does the memory architecture of the OMAPL138BZCE4 differ between the ARM and DSP subsystems?

The OMAPL138BZCE4 employs asymmetric memory hierarchies: ARM uses 16KB I-cache + 16KB D-cache + 8KB vector RAM + 64KB ROM, while DSP uses 32KB L1P + 32KB L1D + 256KB L2 unified RAM/cache. Critically, 128KB of shared RAM is physically separate from L2 and accessible by both cores without arbitration delay - enabling zero-copy inter-processor communication for time-critical data exchange.

Which peripherals on the OMAPL138BZCE4 support hardware-accelerated direct memory access?

The OMAPL138BZCE4 integrates EDMA3 with 64 independent channels and 16 quick-DMA channels, supporting hardware-accelerated transfers for McASP, McBSP, uPP, EMAC, SATA, and USB modules. Each channel operates without CPU intervention, with programmable burst sizes and linked-parameter RAM for scatter-gather operations - essential for sustaining >50 MB/s throughput across multiple concurrent peripherals.

What package type and thermal characteristics define the OMAPL138BZCE4?

The OMAPL138BZCE4 uses a 361-ball Pb-free NFBGA package (13.0 mm × 13.0 mm, 0.65-mm ball pitch, ZCE suffix) with a junction-to-ambient thermal resistance (θ_JA) of 27.1°C/W under JEDEC JESD51-7 conditions. This package enables high I/O density and efficient heat dissipation in compact industrial enclosures, supporting continuous operation at 375 MHz within the industrial temperature range.