参数资料
型号: MC68302FC20CR2
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 4 CHANNEL(S), 10M bps, LOCAL AREA NETWORK CONTROLLER, PQFP132
封装: 0.950 X 0.950 INCH, 0.025 INCH PITCH, PLASTIC, QFP-132
文件页数: 39/128页
文件大小: 641K
代理商: MC68302FC20CR2
MOTOROLA
MC68EN302 REFERENCE MANUAL
2-1
SECTION 2
MC68EN302 MODULE BUS CONTROLLER
2.1 INTRODUCTION
The model of the MC68EN302 is such that the internal 302 functions are unaffected by the
addition of an Ethernet controller and the DRAM controller. The 302 core sees that it must
arbitrate with other bus masters for access to the ‘external’ bus. In the MC68EN302, the
Module Bus Controller provides the arbitration between the 302 core and the other modules
(Ethernet and DRAM) for access to the bus external to the MC68EN302. The functions
provided by the Module Bus Controller (MBC) are as follows:
Interfaces between internal 68000 bus and the Module Bus.
Performs Dynamic Bus sizing utilizing the chip select logic of the internal 68302.
Provides Interrupt handling for Module Bus modules.
Performs bus arbitration between external sources, the Module Bus, and the 68302
core.
Figure 2-1. Top Level Bus Structure
MC68302
MODULE
BUS
CONTROLLER
MODULES
MODULE BUS
68000 BUS
P
A
D
S
INTERNAL
68000 BUS
EXTERNAL
302 BUS
INTERNAL
B
U
F
E
R
S
相关PDF资料
PDF描述
MC68HC000RC12 32-BIT, 12 MHz, MICROPROCESSOR, CPGA68
MC68HC05B32B 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP56
MC68HC705B16CFU 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PQFP64
MC68HC705P6AVP 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDIP28
MC68HC711K4MFU2 8-BIT, OTPROM, 2 MHz, MICROCONTROLLER, PQFP80
相关代理商/技术参数
参数描述
MC68302FC25 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:Integrated Multiprotocol Processor User’s Manual
MC68302FC25C 功能描述:IC MPU MULTI-PROTOCOL 132-PQFP RoHS:否 类别:集成电路 (IC) >> 嵌入式 - 微处理器 系列:M683xx 标准包装:2 系列:MPC8xx 处理器类型:32-位 MPC8xx PowerQUICC 特点:- 速度:133MHz 电压:3.3V 安装类型:表面贴装 封装/外壳:357-BBGA 供应商设备封装:357-PBGA(25x25) 包装:托盘
MC68302FE16 制造商:未知厂家 制造商全称:未知厂家 功能描述:Communications Controller
MC68302FE16C 制造商:未知厂家 制造商全称:未知厂家 功能描述:Communications Controller
MC68302FE20 制造商:未知厂家 制造商全称:未知厂家 功能描述:Communications Controller