NXP LPC2939 MCU USB接口控制方案

NXP 公司的LPC2939是内核为ARM968E-S的MCU,工作频率高达125MHz,并集成了全速USB 2.0 主机/OTG/设备控制器, CAN和LIN,56kB SRAM,768kB闪存,外接存储器接口,三个10位ADC,以及多个串行和并行接口.目标应用在消费类电子,工业,医疗和通信市场.本文主要介绍了LPC2939的主要特性,方框图,以及自带电源和总线供电的LPC2939 USB接口图,以及多种USB OTG端口配置图.

LPC2939:ARM9 microcontroller with CAN, LIN, and USB

The LPC2939 combine an ARM968E-S CPU core with two integrated TCM blocks operating at frequencies of up to 125 MHz, Full-speed USB 2.0 Host/OTG/Device controller, CAN and LIN, 56 kB SRAM, 768 kB flash memory, external memory interface, three 10-bit ADCs, and multiple serial and parallel interfaces in a single chip targeted at consumer, industrial, medical, and communication markets. To optimize system power consumption, the LPC2939 has a very flexible Clock Generation Unit (CGU) that provides dynamic clock gating and scaling.

LPC2939主要特性:

ARM968E-S processor running at frequencies of up to 125 MHz maximum.

Multilayer AHB system bus at 125 MHz with four separate layers.

On-chip memory:

Two Tightly Coupled Memories (TCM), 32 kB Instruction (ITCM), 32 kB Data TCM (DTCM)

Two separate internal Static RAM (SRAM) instances; 32 kB SRAM and 16 kB SRAM
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