Texas Instruments OMAP-L137 User Manual

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1 OMAP-L137 Low-Power Applications Processor

1.1

Features

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• Software Support
– TI DSP/BIOS™
– Chip Support Library and DSP Library
• Dual Core SoC
– 375- and 456-MHz ARM926EJ-S™ RISC MPU
– 375- and 456-MHz C674x VLIW DSP
• ARM926EJ-S Core
– 32-Bit and 16-Bit (Thumb®) Instructions
– DSP Instruction Extensions
– Single Cycle MAC
– ARM® Jazelle® Technology
– Embedded ICE-RT™ for Real-Time Debug
• ARM9™ Memory Architecture
– 16KB of Instruction Cache
– 16KB of Data Cache
– 8KB of RAM (Vector Table)
– 64KB of ROM
• C674x Instruction Set Features
– Superset of the C67x+ and C64x+ ISAs
– Up to 3648 MIPS and 2736 MFLOPS C674x
– Byte-Addressable (8-, 16-, 32-, and 64-Bit Data)
– 8-Bit Overflow Protection
– Bit-Field Extract, Set, Clear
– Normalization, Saturation, Bit-Counting
– Compact 16-Bit Instructions
• C674x Two-Level Cache Memory Architecture
– 32KB of L1P Program RAM/Cache
– 32KB of L1D Data RAM/Cache
– 256KB of L2 Unified Mapped RAM/Cache
– Flexible RAM/Cache Partition (L1 and L2)
• Enhanced Direct Memory Access Controller 3
(EDMA3):
– 2 Transfer Controllers
– 32 Independent DMA Channels
– 8 Quick DMA Channels
– Programmable Transfer Burst Size
• TMS320C674x Fixed- and Floating-Point VLIW
DSP Core
– Load-Store Architecture with Nonaligned
Support
– 64 General-Purpose Registers (32-Bit)
– Six ALU (32- and 40-Bit) Functional Units
• Supports 32-Bit Integer, SP (IEEE Single
Precision/32-Bit) and DP (IEEE Double
Precision/64-Bit) Floating Point
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An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
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SPRS563G – SEPTEMBER 2008 – REVISED JUNE 2014
• Supports up to Four SP Additions Per Clock,
Four DP Additions Every 2 Clocks
• Supports up to Two Floating-Point (SP or
DP) Reciprocal Approximation (RCPxP) and
Square-Root Reciprocal Approximation
(RSQRxP) Operations Per Cycle
– Two Multiply Functional Units
• Mixed-Precision IEEE Floating Point Multiply
Supported up to:
– 2 SP x SP -> SP Per Clock
– 2 SP x SP -> DP Every Two Clocks
– 2 SP x DP -> DP Every Three Clocks
– 2 DP x DP -> DP Every Four Clocks
• Fixed-Point Multiply Supports Two 32 x 32-
Bit Multiplies, Four 16 x 16-Bit Multiplies, or
Eight 8 x 8-Bit Multiplies per Clock Cycle,
and Complex Multiples
– Instruction Packing Reduces Code Size
– All Instructions Conditional
– Hardware Support for Modulo Loop
Operation
– Protected Mode Operation
– Exceptions Support for Error Detection and
Program Redirection
• 128KB of RAM Shared Memory
• 3.3-V LVCMOS I/Os (Except for USB Interfaces)
• Two External Memory Interfaces:
– EMIFA
• NOR (8- or 16-Bit-Wide Data)
• NAND (8- or 16-Bit-Wide Data)
• 16-Bit SDRAM with 128-MB Address Space
– EMIFB
• 32-Bit or 16-Bit SDRAM with 256-MB
Address Space
• Three Configurable 16550-Type UART Modules:
– UART0 with Modem Control Signals
– Autoflow Control Signals (CTS, RTS) on UART0
Only
– 16-Byte FIFO
– 16x or 13x Oversampling Option
• LCD Controller
• Two Serial Peripheral Interfaces (SPIs) Each with
One Chip Select
• Multimedia Card (MMC)/Secure Digital (SD) Card
Interface with Secure Data I/O (SDIO)
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