Texas Instruments OMAPL137DZKBA3

Overview

OMAPL137DZKBA3 from Texas Instruments is a dual-core low-power applications processor integrating a 456-MHz ARM926EJ-S RISC MPU and a 456-MHz TMS320C674x VLIW DSP, with 128KB shared RAM, dual external memory interfaces (EMIFA/EMIFB), and integrated 10/100 Ethernet MAC - deployed in professional audio systems requiring real-time audio processing and networked streaming.

For engineers reviewing the OMAPL137DZKBA3 datasheet, OMAPL137DZKBA3 pinout, OMAPL137DZKBA3 application, or OMAPL137DZKBA3 equivalent, key selection considerations include dual-core clock synchronization, EMAC RMII timing compliance, McASP serializer count for multi-channel audio I/O, and 256-ball ZKB PBGA thermal performance at 1.3V core voltage.

Technical Context

The OMAPL137DZKBA3 implements tightly coupled ARM926EJ-S and C674x cores sharing L2 and 128KB RAM, with independent cache hierarchies: ARM side uses 16KB I-cache + 16KB D-cache + 8KB vector RAM + 64KB ROM; DSP side uses 32KB L1P + 32KB L1D + 256KB unified L2. Both cores operate at identical frequencies (375 MHz or 456 MHz) under synchronized PLL control.

Peripheral interconnect uses a hierarchical AHB/AXI-like fabric with dedicated EDMA3 controller (32 channels + 8 QDMA), enabling zero-copy audio data movement between McASPs, EMAC, and DDR via EMIFB - critical for deterministic latency in A/V receivers and soundbars with simultaneous HDMI audio extraction, network streaming, and analog output.

Key Specifications

Pinout & Package

OMAPL137DZKBA3 is housed in a 256-ball plastic ball grid array (PBGA) package designated ZKB, with 1.0-mm ball pitch and 17.0 mm × 17.0 mm body size. Thermal pad exposed on underside for enhanced heat dissipation in audio amplifier applications.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-core audio processor applications.

Compared with OMAPL137DZKBA3, OMAPL138DZKBA3 offers identical functionality with extended temperature qualification, while AM3358BZCZ100 replaces hardware DSP acceleration with software decode on a faster ARM core - making it viable only when real-time fixed-point audio processing is not required.

Availability

OMAPL137DZKBA3 is available at Aetrix Electronics and suitable for professional audio equipment, automotive infotainment head units, and networked streaming devices requiring stable component supply across multi-year production cycles.

Supply support for OMAPL137DZKBA3 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.

The OMAP-L137 product line was designed specifically for low-power, high-fidelity audio applications demanding real-time DSP performance alongside rich OS support - targeting A/V receivers, soundbars, and networked amplifiers.

FAQ

What is the maximum operating frequency of the OMAPL137DZKBA3 ARM and DSP cores?

The OMAPL137DZKBA3 supports two frequency grades: 375 MHz at 1.2-V core voltage and 456 MHz at 1.3-V core voltage. Both ARM926EJ-S and C674x cores run synchronously at the same frequency - confirmed in Section 3.1 of SPRS563G Rev JUNE 2014. Operation above 375 MHz requires 1.3-V CVDD supply and adherence to thermal limits specified in Table 8-1.

Does the OMAPL137DZKBA3 support booting directly from NAND flash?

Yes, the OMAPL137DZKBA3 supports NAND boot mode via its EMIFA interface. The device's 64KB on-chip ROM contains a boot loader that initializes EMIFA and copies first-stage code from NAND into internal RAM. This is documented in Section 4.1 (Boot Modes) and Table 3-1 of the SPRS563G datasheet.

How many McASP serializers does the OMAPL137DZKBA3 provide, and what audio protocols do they support?

The OMAPL137DZKBA3 integrates three McASP peripherals: McASP0 (16 serializers), McASP1 (12 serializers), and McASP2 (4 serializers). All support TDM, I2S, and similar formats; McASP2 additionally supports DIT for S/PDIF and AES3 output - detailed in Section 6.16 and Table 3-1 of SPRS563G.

Is the OMAPL137DZKBA3 pin-compatible with other OMAP-L13x devices?

OMAPL137DZKBA3 shares the 256-ball ZKB PBGA package and pinout with OMAPL138DZKBA3, enabling drop-in replacement in thermally qualified designs. However, it is not compatible with OMAPL132 or OMAPL131 due to differing peripheral sets and memory interface configurations - verified in Section 3.2 and Table 8-2 of SPRS563G.

What is the role of the PRUSS in the OMAPL137DZKBA3, and how is it used in audio applications?

The Programmable Real-Time Unit Subsystem (PRUSS) in OMAPL137DZKBA3 consists of two independent 32-bit RISC cores, each with 4KB instruction RAM and 512B data RAM. In audio systems, PRUSS handles time-critical tasks such as IR remote decoding, GPIO-based button debouncing, or PWM-driven status LEDs - freeing the ARM and DSP cores for higher-layer processing as described in Section 6.29.