Overview
The OMAP-L138EZCED4 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 C674x fixed- and floating-point VLIW DSP core. This processor is designed to provide high performance while maintaining low power consumption, making it suitable for a variety of applications. The OMAP-L138 features a comprehensive set of peripherals and interfaces, including USB, Ethernet, SATA, and multiple serial ports, which enhance its versatility and functionality.
Key Specifications
| Characteristic | Specification |
|---|---|
| CPU Cores | ARM926EJ-S RISC MPU and C674x DSP core |
| CPU Frequency | 375 MHz (1.2V) or 456 MHz (1.3V) for both ARM and DSP cores |
| Cache Memory | 16KB Instruction Cache, 16KB Data Cache for ARM; 32KB L1 Program and Data Cache, 256KB L2 Unified Mapped RAM/Cache for DSP |
| RAM | 128KB Shared RAM, 8KB RAM (Vector Table) for ARM |
| Package | 361-Ball Pb-Free Plastic Ball Grid Array (PBGA) |
| Operating Temperature | -40°C to 90°C |
| Supply Voltage | 1.25V to 1.35V (nominal 1.3V) |
| External Data Bus Width | 32-bit |
| Interfaces | USB 1.1 OHCI, USB 2.0 OTG, 10/100 Mbps Ethernet MAC, SATA I and II, McASP, McBSPs, SPI, UART, I2C |
Key Features
- Dual-core architecture with ARM926EJ-S and C674x DSP cores, providing high performance and low power consumption.
- Comprehensive peripheral set including USB, Ethernet, SATA, McASP, McBSPs, SPI, UART, and I2C interfaces.
- Enhanced Direct Memory Access Controller 3 (EDMA3) with 64 independent DMA channels and 16 quick DMA channels.
- Flexible RAM and cache partitioning (L1 and L2).
- Real-Time Clock (RTC) with 32-kHz oscillator and separate power rail.
- Three 64-bit general-purpose timers and one 64-bit general-purpose or watchdog timer.
- Two enhanced high-resolution pulse width modulators (eHRPWMs) and three enhanced capture (eCAP) modules.
- Video Port Interface (VPIF) and Universal Parallel Port (uPP).
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-L138EZCED4 processor?
The OMAP-L138EZCED4 features a dual-core architecture with an ARM926EJ-S RISC MPU and a C674x fixed- and floating-point VLIW DSP core.
- What are the CPU frequencies of the OMAP-L138EZCED4?
The CPU frequencies are 375 MHz (1.2V) or 456 MHz (1.3V) for both the ARM and DSP cores.
- What types of cache and RAM does the OMAP-L138EZCED4 have?
The processor includes 16KB Instruction Cache and 16KB Data Cache for the ARM core, and 32KB L1 Program and Data Cache, along with 256KB L2 Unified Mapped RAM/Cache for the DSP core. It also has 128KB of shared RAM and 8KB of RAM for the vector table.
- What is the package type and pin count of the OMAP-L138EZCED4?
The processor is packaged in a 361-Ball Pb-Free Plastic Ball Grid Array (PBGA).
- What is the operating temperature range of the OMAP-L138EZCED4?
The operating temperature range is -40°C to 90°C.
- What are the key interfaces supported by the OMAP-L138EZCED4?
The processor supports USB 1.1 OHCI, USB 2.0 OTG, 10/100 Mbps Ethernet MAC, SATA I and II, McASP, McBSPs, SPI, UART, and I2C interfaces.
- What is the purpose of the EDMA3 in the OMAP-L138EZCED4?
The Enhanced Direct Memory Access Controller 3 (EDMA3) provides 64 independent DMA channels and 16 quick DMA channels, enhancing data transfer efficiency.
- What are some of the timer and PWM features of the OMAP-L138EZCED4?
The processor includes three 64-bit general-purpose timers, one 64-bit general-purpose or watchdog timer, two enhanced high-resolution pulse width modulators (eHRPWMs), and three enhanced capture (eCAP) modules.
- What are the typical applications of the OMAP-L138EZCED4?
Typical applications include Professional or Private Mobile Radio (PMR), Remote Radio Unit (RRU) and Remote Radio Head (RRH), Industrial Automation, Currency Inspection, Biometric Identification, Machine Vision, Smart Grid Substation Protection, and Industrial Portable Navigation Devices.
- What is the supply voltage range for the OMAP-L138EZCED4?
The supply voltage range is 1.25V to 1.35V, with a nominal voltage of 1.3V.
- Does the OMAP-L138EZCED4 support real-time clock functionality?
Yes, it includes a Real-Time Clock (RTC) with a 32-kHz oscillator and a separate power rail.
