參數(shù)資料
型號: MC68QH302
廠商: Motorola, Inc.
英文描述: 32-Bit Microprocessor(32位微處理器)
中文描述: 32位微處理器(32位微處理器)
文件頁數(shù): 10/50頁
文件大?。?/td> 6613K
代理商: MC68QH302
A
MOTOROLA
MC68QH302 Supplement to the MC68302 Users Manual
1
This supplement to the
(MC68302UM/AD)
referred to as the QH302, and how they differ from the MC68302, referred to as the 302.
The
MC68302 Integrated Multiprotocol Processor Users Manual
any features not described in this document.
MC68302 Integrated Multiprotocol Processor Users Manual
highlights implementation-speciTc features of the MC68QH302,
should be consulted for
To locate any published errata or updates for this document, refer to the website at
http://www.mot.com/netcomm.
1.1 Overview
The MC68QH302, quad HDLC integrated multiprotocol processor, is based on the three-
SCC MC68302 family of chips with the addition of the QH protocol and two extra serial
DMA channels. The QH302 supports a total of four independent communications channels,
handling two HDLC or transparent channels on SCC1; see Figure 1 for a block diagram.
Figure 1. MC68QH302 Block Diagram
SCC1
(2 Channels)
SCC2
+
SCC3
SCP
+
2 SMCs
1152 Bytes
Dual-Port
RAM
8 DMA
Channels
RISC
Controller
Interrupt
Controllers
RAM
+
ROM
3 Timers
4 Chip Selects
Parallel I/O
General-Purpose
DMA
Channel
M68000
Core
Peripheral Bus
68000
System Bus
20 Address Lines
8/16 Data Lines
MC68QH302
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