Architecture Overview
┌─────────────────────────────────────────────────────┐ │ OMAP-L138 SoC │ ├──────────────┬──────────────────────────────────────┤ │ ARM926EJ-S │ TMS320C674x DSP Core │ │ Core │ (Floating/Fixed-Point) │ │ @456MHz │ @456MHz │ │ (32-bit RISC)│ │ ├──────────────┼──────────────────────────────────────┤ │ Shared Memory: 128KB RAM, Shared Peripherals │ ├─────────────────────────────────────────────────────┤ │ SYSTEM INTERCONNECT & POWER MANAGEMENT │ ├─────────────────────────────────────────────────────┤ │ PERIPHERALS & INTERFACES (See Section 4) │ └─────────────────────────────────────────────────────┘
- Heterogeneous Dual-Core: ARM926EJ-S for control/application processing and C674x DSP for signal/math-intensive processing
- Shared Memory Architecture: Enables zero-copy data transfer
- Smart Reflex Technology: Adaptive voltage/frequency scaling
Core Processor Specifications
ARM926EJ-S Core (456 MHz)
- 32-bit RISC processor with MMU
- 16KB Instruction Cache, 16KB Data Cache
- 8KB RAM, 8KB ROM
- Jazelle technology for Java acceleration
- ARMv5TE instruction set architecture
TMS320C674x DSP Core (456 MHz)
- Industry's lowest-power floating-point DSP
- VLIW architecture (8 functional units)
- Native hardware support for IEEE single/double precision
- Advanced C compiler with intrinsic optimizations
- 32KB L1P, 32KB L1D, 256KB L2 memory
Key Technical Specifications
| Parameter |
Specification |
| Process Technology |
65nm CMOS |
| Core Voltages |
CVDD: 1.2V, DVDD: 1.8V/3.3V |
| Power Consumption |
<300mW @ 300MHz (typical) <500mW @ 456MHz (max) |
| Package |
361-ball PBGA (16mm x 16mm, 0.65mm pitch) |
| Temperature Range |
Extended Industrial: -40°C to 105°C |
| Pin Count |
361 (EZWT package variant) |
Primary Application Domains
Industrial Automation & Control
- PLC/PAC systems
- Motor drives (servo, stepper, BLDC)
- Process control instrumentation
- Industrial robots
Medical & Healthcare
- Patient monitoring (vital signs, Holter)
- Portable ultrasound
- Infusion pumps
- Diagnostic equipment
Audio/Video Processing
- Audio processors (mixers, effects)
- Video analytics (surveillance)
- Teleconferencing systems
Current Status & Recommendations
Production Status
- Status: Active production for industrial customers
- Lifecycle: Mature product with long-term supply guaranteed
When to Choose OMAP-L138EZWTD4
- Legacy designs upgrading from OMAP-L137
- Applications requiring floating-point DSP + ARM
- Industrial temperature operation (-40°C to 105°C)
- Existing DSP algorithm investment
Essential Design Resources
- Datasheet: SPRS586H (Rev. H, 2014)
- Technical Reference: SPRUH77C (Rev. C, 2012)
- EVM User's Guide: SPRUHG6
- Linux SDK: Processor SDK RTOS/Linux
- Power Estimation Tool: SPC948B
