资料介绍
ti_omap-l138_layout,TI公司的ARM+DSP芯片Omap-138的布局图,很有帮助
The OMAP-L138 applications processor enables the quick design of connected, high-precision products at a low price. It provides significantly lower power than other members of the TMS320C6000™ platform of DSPs; featuring robust operating systems support, rich user interfaces, and high processing performance life through the maximum flexibility of a fully integrated mixed processor solution. The processor is based on the C674x floating-point DSP core plus an ARM9™, providing up to 300 MHz per core. With the on-chip ARM9, developers can leverage the floating-point DSP for real-time, processingintensive computations while off-loading non-real-time tasks to the ARM. This functionality enables developers to design more feature-rich end products that include Graphical User Interfaces (GUIs), touch screens and/or networking stacks. Additionally, developers can use the ARM to implement various high-level operating systems such as VxWorks, WinCE or Linux. The C674x DSP core is programmable in either fixed point or floating point and is code compatible with existing C64x+™ and C67x+™ DSP devices. The ARM926EJ-S is a 32-bit RISC processor core that performs 32-bit or 16-bit instructions and processes 32-bit, 16-bit, or 8-bit data. The core uses pipelining so that all parts of the processor and memory system can operate continuously.
The OMAP-L138 DSP core uses a two-level cache-based architecture. The Level 1 Program (L1P) cache is a 32 KB direct mapped cache and the Level 1 Data (L1D) cache is a 32 KB two-way set-associative cache. The Level 2 Program (L2P) cache consists of a 256 KB memory space that is shared between program and data space. L2 also has a 1024 KB ROM. L2 memory can be configured as mapped memory, cache, or combinations of the two. Features • Dual core SoC – 300 MHz ARM926EJ-S™ RISC MPU – 300 MHz C674x VLIW DSP • Three configurable 16550 type UART modules • Power management/power savings – Real-Time Clock (RTC) with crystal input, separate clock domain, separate power supply – Supports individual power-down modes • 10/100 Mb/s Ethernet MAC (EMAC) • Up to 448 KB on-chip RAM including 128 KB RAM shared memory • LCD controller • Two Multimedia Card (MMC)/Secure Digital (SD) card interface with Secure Data I/O (SDIO) • USB 1.1 OHCI (host) with integrated PHY
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