Overview
The OMAP-L138EZWT4 is a low-power applications processor developed by Texas Instruments. It is based on a dual-core architecture, combining an ARM926EJ-S RISC MPU and a TMS320C674x fixed- and floating-point VLIW DSP core. This processor is designed to provide significant power savings compared to other members of the TMS320C6000 platform of DSPs. It is ideal for original-equipment manufacturers (OEMs) and original-design manufacturers (ODMs) to quickly develop devices with robust operating systems, rich user interfaces, and high processor performance.
Key Specifications
| Parameter | Description |
|---|---|
| Processor Cores | Dual-Core: ARM926EJ-S RISC MPU and TMS320C674x DSP core |
| Core Frequencies | 375- and 456-MHz for both ARM926EJ-S and C674x cores |
| Instruction Set | ARM926EJ-S: 32- and 16-Bit (Thumb®) Instructions; C674x: Superset of C67x+ and C64x+ ISAs |
| Cache Memory | ARM926EJ-S: 16KB Instruction Cache, 16KB Data Cache; C674x: 32KB L1P Program RAM/Cache, 32KB L1D Data RAM/Cache, 256KB L2 Unified Mapped RAM/Cache |
| RAM and ROM | 8KB of RAM (Vector Table), 64KB of ROM, 128KB of RAM Shared Memory |
| External Memory Interfaces | EMIFA (NOR, NAND, 16-Bit SDRAM), DDR2/Mobile DDR Memory Controller |
| Peripherals | 10/100 Mbps Ethernet MAC, USB 1.1 and USB 2.0 OTG, UARTs, SPIs, McASP, McBSPs, I2C Bus, SATA Controller, Video Port Interface (VPIF), Universal Parallel Port (uPP) |
| Package | 361-Ball Pb-Free Plastic Ball Grid Array (PBGA) [ZWT Suffix], 0.80-mm Ball Pitch |
| Operating Temperature | Commercial, Extended, or Industrial Temperature (0°C ~ 90°C) |
Key Features
- Dual-core architecture combining ARM926EJ-S RISC MPU and TMS320C674x DSP core for high performance and low power consumption.
- High-performance TMS320C674x DSP core with up to 3648 MIPS and 2746 MFLOPS.
- Enhanced Direct Memory Access Controller 3 (EDMA3) with 64 independent DMA channels and 16 quick DMA channels.
- Rich peripheral set including 10/100 Mbps Ethernet MAC, USB interfaces, UARTs, SPIs, McASP, McBSPs, I2C Bus, SATA Controller, and Video Port Interface (VPIF).
- Universal Parallel Port (uPP) for high-speed parallel interface to FPGAs and data converters.
- Support for SATA I and SATA II with hardware-assisted native command queueing (NCQ).
- Real-Time Clock (RTC) with 32-kHz oscillator and separate power rail.
- Enhanced high-resolution pulse width modulators (eHRPWM) and enhanced capture (eCAP) modules.
Applications
- Professional or Private Mobile Radio (PMR)
- Remote Radio Unit (RRU) and Remote Radio Head (RRH)
- Industrial Automation
- Currency Inspection and Biometric Identification
- Machine Vision (Low-End)
- Smart Grid Substation Protection
- Industrial Portable Navigation Devices
Q & A
- What are the core components of the OMAP-L138EZWT4?
The OMAP-L138EZWT4 features a dual-core architecture with an ARM926EJ-S RISC MPU and a TMS320C674x fixed- and floating-point VLIW DSP core.
- What are the operating frequencies of the cores?
The cores operate at frequencies of 375- and 456-MHz.
- What is the cache memory configuration?
The ARM926EJ-S core has 16KB of instruction cache and 16KB of data cache. The C674x core has 32KB of L1P program RAM/cache, 32KB of L1D data RAM/cache, and 256KB of L2 unified mapped RAM/cache.
- What external memory interfaces are supported?
The device supports EMIFA (NOR, NAND, 16-Bit SDRAM) and DDR2/Mobile DDR memory controllers.
- What peripherals are included?
The device includes a range of peripherals such as 10/100 Mbps Ethernet MAC, USB interfaces, UARTs, SPIs, McASP, McBSPs, I2C Bus, SATA Controller, and Video Port Interface (VPIF).
- What is the package type and size?
The device is packaged in a 361-Ball Pb-Free Plastic Ball Grid Array (PBGA) with a 0.80-mm ball pitch.
- What are the operating temperature ranges?
The device operates in commercial, extended, or industrial temperature ranges (0°C ~ 90°C).
- What are some of the key applications of the OMAP-L138EZWT4?
Key applications include Professional or Private Mobile Radio (PMR), Remote Radio Unit (RRU), Industrial Automation, Currency Inspection, Biometric Identification, Machine Vision, Smart Grid Substation Protection, and Industrial Portable Navigation Devices.
- What development tools are available for the OMAP-L138EZWT4?
Development tools include C compilers, a DSP assembly optimizer, and a Windows® debugger interface for visibility into source code execution.
- Does the OMAP-L138EZWT4 support SATA interfaces?
Yes, the device supports SATA I (1.5 Gbps) and SATA II (3.0 Gbps) with hardware-assisted native command queueing (NCQ).
