參數(shù)資料
型號： UPD72042GT
廠商： NEC Corp.
英文描述： LSI DEVICES FOR Inter Equipment BusTM (IEBusTM) PROTOCOL CONTROL
中文描述： LSI器件間設備BusTM（IEBusTM）協(xié)議控制
文件頁數(shù)： 4/92頁
文件大小： 373K
代理商： UPD72042GT
μ
PD72042
4
Data Sheet S14870EJ1V0DS00
CONTENTS
1.
PIN FUNCTIONS............................................................................................................................
1.1
PIN FUNCTIONS ...................................................................................................................................
6
6
2.
IEBus OPERATION .......................................................................................................................
2.1
OVERVIEW..............................................................................................................................................
2.2
IEBus COMMUNICATION PROTOCOL..............................................................................................
2.2.1
Bus Mastership Determination (Arbitration) ...............................................................................
2.2.2
Communication Mode .................................................................................................................
2.2.3
Communication Address .............................................................................................................
2.2.4
Broadcast.....................................................................................................................................
2.3
TRANSMISSION PROTOCOL ..............................................................................................................
2.4
TRANSMISSION DATA (CONTENTS OF THE DATA FIELD)........................................................
2.5
BIT FORMAT..........................................................................................................................................
8
8
9
10
10
11
11
11
17
21
3.
MICROCOMPUTER INTERFACE ................................................................................................. 22
3.1
TRANSFER METHOD ...........................................................................................................................
3.2
DATA TRANSFER FORMAT................................................................................................................
3.2.1
Three-Wire Data Transfer (SEL = 1) ..........................................................................................
3.2.2
Two-Wire Data Transfer (SEL = 0) .............................................................................................
3.3
CONNECTION TO A MICROCOMPUTER .........................................................................................
3.4
STANDBY MODE SETTING AND CANCELLATION .......................................................................
3.5
RESET MODE SETTING AND CANCELLATION ............................................................................
22
23
23
25
27
28
28
4.
REGISTERS .................................................................................................................................... 29
5.
EXAMPLE TIMINGS FOR COMMUNICATION .......................................................................... 59
6.
EXAMPLE MICROCOMPUTER PROCESSING FLOW............................................................. 67
6.1
COMMUNICATION FLAGS ...................................................................................................................
6.2
MAIN ROUTINE .....................................................................................................................................
6.3
INTERRUPT ROUTINE .........................................................................................................................
6.4
PROCESSING ROUTINES....................................................................................................................
6.4.1
μ
PD72042 Initial Setting Routine ...............................................................................................
6.4.2
Communication Flag Initialization Routine.................................................................................
6.4.3
Command Processing Routine ...................................................................................................
6.4.4
Master Communication Processing Routine ..............................................................................
6.4.5
Slave Data Transmission Processing Routine ...........................................................................
6.4.6
Transmission Processing Routine ..............................................................................................
6.4.7
Reception Processing Routine ...................................................................................................
68
69
70
72
72
72
73
73
77
80
81
7.
ELECTRICAL CHARACTERISTICS ............................................................................................. 82
8.
PACKAGE DRAWING.................................................................................................................... 86
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相關代理商/技術參數(shù)
參數(shù)描述
UPD72042GT(A) 制造商:Renesas Electronics Corporation 功能描述:
UPD720902AF5-667-JF2-E3-A 功能描述:IC ADVANCED MEMORY BUFFER D1 RoHS:是 類別:集成電路 (IC) >> 接口 - 專用 系列:* 標準包裝:90 系列:- 應用:PCI 至 PCI 橋 接口:PCI 電源電壓:3 V ~ 3.6 V 封裝/外殼:257-LFBGA 供應商設備封裝:257-BGA MICROSTAR（16x16） 包裝:托盤 安裝類型:表面貼裝 產(chǎn)品目錄頁面:882 (CN2011-ZH PDF) 其它名稱:296-19316
UPD72255YF1-GA5-A 制造商:Renesas Electronics Corporation 功能描述:
UPD7225G 制造商:Panasonic Industrial Company 功能描述:IC
UPD7225GB-3B7(A) 制造商:Renesas Electronics Corporation 功能描述:
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