Step Technica MKY02 Manual de usuario
HUB-IC MKY02
User’s Manual
(for CUnet)
STD_CUH02_V1.6E
Note
1. The information in this document is subject to change without prior notice. Before using this
product, please confirm that this is the latest version of this document.
2. Technical information in this document, such as explanations and circuit examples, are refer-
ences for this product. When actually using this product, always fully evaluate the entire sys-
tem according to the design purpose based on considerations of peripheral circuits and the
PC board environment. We assume no responsibility for any incompatibility between this
product and your system.
3. We assume no responsibility whatsoever for any losses or damages arising from the use of
the information, products, and circuits in this document, or for infringement of patents and any
other rights of a third party.
4. When using this product and the information and circuits in this document, we do not guaran-
tee the right to use any property rights, intellectual property rights, and any other rights of a
third party.
5. This product is not designed for use in critical applications, such as life support systems. Con-
tact us when considering such applications.
6. No part of this document may be copied or reproduced in any form or by any means without
prior written permission from StepTechnica Co., Ltd..
Trademark "HLS" is licensed by Murata Manufacturing Co., Ltd.
MKY02 User’s Manual
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Preface
This manual describes the MKY02, or a kind of HUB-IC in the CUnet.
Be sure to read “CUnet Introduction Guide” before understanding this manual and the MKY02.
zTarget Readers
This manual is for:
yThose who first build a CUnet
yThose who first use StepTechnica's various ICs to build a CUnet
zPrerequisites
This manual assumes that you are familiar with:
yNetwork technology
ySemiconductor products (especially microcontrollers and memory)
zRelated Manuals
yCUnet Introduction Guide
yCUnet Technical Guide
yCUnet IC Manuals
[Caution]
ySome terms in this manual are different from those used on our website and in our product bro-
chures. The brochure uses ordinary terms to help many people in various industries understand
our products.
Please understand technical information on HLS Family and CUnet Family based on technical
documents (manuals).
MKY02 User’s Manual
(for CUnet)
- iv -
CONTENTS
Chapter 1 Concepts for Using MKY02 (HUB)
1.1 Role of MKY02 ....................................................................................................... 1-3
1.2 Basic CUnet Configuration................................................................................... 1-3
1.3 CUnet Configuration using HUBs........................................................................ 1-4
1.3.1 Extending Total Length of Network Cable ................................................................ 1-4
1.3.2 Branching Multi-dropped Network Cables................................................................ 1-6
1.3.3 Eliminating Connection or Disconnection of
Termination Resistor to or from Each Device .......................................................... 1-7
1.3.4 Star Topology ..............................................................................................................1-8
1.4 Basic HUB Connection ......................................................................................... 1-9
1.5 Multi-drop Network of HUBs .............................................................................. 1-10
1.6 Port Addition to HUB .......................................................................................... 1-11
1.7 MKY02 Operation ................................................................................................ 1-12
1.7.1 Receiving and Sending Packets .............................................................................. 1-12
1.7.2 Signal Correction....................................................................................................... 1-13
1.7.3 Detection of Error Packet ......................................................................................... 1-13
1.8 Features of MKY02 .............................................................................................. 1-14
Chapter 2 MKY02 Hardware ................................................................................2-3
Chapter 3 Single Connection of MKY02
3.1 Voltage Levels of Pins Connecting to Signal Pins............................................. 3-4
3.2 Supplying Driving Clock and Hardware Reset Signal ....................................... 3-5
3.2.1 Supplying Driving Clock ............................................................................................. 3-5
3.2.2 Setting Cascade Clock and Baud Rate...................................................................... 3-6
3.2.3 Hardware Reset ........................................................................................................... 3-7
3.3 Connecting Network Interface ............................................................................. 3-8
3.3.1 Handling of FH Pin ...................................................................................................... 3-8
3.3.2 Connection of Port 0 ................................................................................................... 3-8
3.3.3 Connection of Ports 1 to 7......................................................................................... 3-9
3.3.4 Recommended Network Connection....................................................................... 3-10
3.4 Connecting Monitor LEDs .................................................................................. 3-11
3.4.1 Packet Receive Monitor ............................................................................................ 3-11
3.4.2 Packet Error Monitor ................................................................................................. 3-12
3.4.3 Port Receive Monitor................................................................................................. 3-13
3.5 Handling Cascade Connection Pins.................................................................. 3-15
3.6 Cautions for Designing HUB .............................................................................. 3-15
3.7 Example Circuit for Single Connection of MKY02 ........................................... 3-16
MKY02 User’s Manual
- v -
Chapter 4 Cascade Connection of MKY02
4.1 Concepts of Port Addition.................................................................................... 4-3
4.1.1 Port Addition by Stacking Method............................................................................. 4-3
4.1.2 Port Addition by Cascade Connection ...................................................................... 4-4
4.1.3 Maximum Available Cascade Connections............................................................... 4-4
4.2 Practical Side of Cascade Connection................................................................ 4-5
4.2.1 Cascade Pins ...............................................................................................................4-5
4.2.2 Operation of Cascade Connection Pins .................................................................... 4-6
4.2.3 Connection of Cascade Clocks and Determination of Baud Rate .......................... 4-7
4.2.4 Connection of Hardware Reset Signal ...................................................................... 4-8
4.2.5 Handling of Each FH Pin............................................................................................. 4-8
4.2.6 Connection of Each Port............................................................................................. 4-8
4.2.7 Placement of Monitor LEDs........................................................................................ 4-9
4.3 Example Circuit for Port-added HUB by Cascade Connection....................... 4-10
Chapter 5 Ratings
5.1 Electrical Ratings .................................................................................................. 5-3
5.2 AC Characteristics ................................................................................................ 5-3
5.2.1 Clock and Reset Timing.............................................................................................. 5-4
5.2.2 Port Pin Timing (TXE0 to 7, TXD0, TXD17, RXD0 to 7)............................................. 5-5
5.2.3 Cascade Connection Pin Timing................................................................................ 5-6
5.2.4 Output Timing of #LEDRCV and #LEDRZE Pins ...................................................... 5-6
5.2.5 Timing of Receive Monitor Pin of Individual Port (RLLD, RLDT, RLCK) ................ 5-7
5.3 Package Dimensions ............................................................................................ 5-8
5.4 Recommended Soldering Conditions ................................................................. 5-9
5.5 Recommended Reflow Conditions ...................................................................... 5-9
MKY02 User’s Manual
(for CUnet)
- vi -
Figures
Fig. 1.1 Basic CUnet Configuration .......................................................................... 1-3
Fig. 1.2 Extension of Network Cable Length ........................................................... 1-4
Fig. 1.3 Multipoint Connection of Network Cables.................................................. 1-6
Fig. 1.4 Eliminating Problems with Termination Resistors .................................... 1-7
Fig. 1.5 Star Topology................................................................................................ 1-8
Fig. 1.6 Basic Connection and Number of Inserted HUBs ..................................... 1-9
Fig. 1.7 HUB in Intermediate Position of Multi-drop Network .............................. 1-10
Fig. 1.8 Adding Ports by Cascading MKY02s ........................................................ 1-11
Fig. 1.9 Number of Inserted HUBs with Added Ports............................................ 1-11
Fig. 1.10 MKY02 Operating Principles...................................................................... 1-12
Fig. 1.11 Example of Signal Transformation and Correction ................................. 1-13
Fig. 2.1 MKY02 Pin Assignment................................................................................ 2-3
Fig. 2.2 Pin Electrical Characteristics in I/O Circuit Types of MKY02 ................... 2-6
Fig. 3.1 Connection Causing Leakage Current........................................................ 3-4
Fig. 3.2 Cascade Clock Generation .......................................................................... 3-6
Fig. 3.3 Clock Connection ......................................................................................... 3-6
Fig. 3.4 Hardware Reset............................................................................................. 3-7
Fig. 3.5 Handling of FH Pin........................................................................................ 3-8
Fig. 3.6 TRX Connection of Port 0 ............................................................................ 3-8
Fig. 3.7 TRX Connection of Ports 1 to 7 ................................................................... 3-9
Fig. 3.8 TRX Connection of HUB with 4 Ports ......................................................... 3-9
Fig. 3.9 Recommended Network Connection ........................................................ 3-10
Fig. 3.10 Connection of Receive Monitor LED......................................................... 3-11
Fig. 3.11 Connection of Packet Error Monitor LED ................................................. 3-12
Fig. 3.12 RLLD, RLDT, and RLCK Outputs............................................................... 3-13
Fig. 3.13 8-port Receive Monitor ............................................................................... 3-14
Fig. 3.14 4-port Receive Monitor ............................................................................... 3-14
Fig. 3.15 Handling of Cascade Connection Pins ..................................................... 3-15
Fig. 3.16 Example of Single Connection Circuit...................................................... 3-16
MKY02 User’s Manual
- vii -
Fig. 4.1 Addition of Three-stacked Ports ................................................................. 4-3
Fig. 4.2 Port Addition by Three Cascade Connections........................................... 4-4
Fig. 4.3 Cascade Pin Connection for Three MKY02s .............................................. 4-5
Fig. 4.4 Cascade Pin Connection for Two MKY02s................................................. 4-5
Fig. 4.5 Operation when Port 11 Receives a Packet ............................................... 4-6
Fig. 4.6 Operation when Port 23 Receives a Packet ............................................... 4-6
Fig. 4.7 Operation when Port 0 Receives a Packet ................................................. 4-6
Fig. 4.8 Connection of Cascade Clocks ................................................................... 4-7
Fig. 4.9 Monitor Placement Example for Port-added HUB ..................................... 4-9
Fig. 4.10 Example Circuit for HUB with 24 Ports..................................................... 4-10
Tables
Table 1-1 Baud Rates and Recommended Total Extension Number
of Inserted HUBs.......................................................................................... 1-4
Table 2-1 Pin Functions of MKY02.............................................................................. 2-4
Table 2-2 Electrical Ratings of MKY02........................................................................ 2-6
Table 3-1 Output Frequencies of Cascade Clocks .................................................... 3-6
Table 5-1 Absolute Maximum Ratings ........................................................................ 5-3
Table 5-2 Electrical Ratings......................................................................................... 5-3
Table 5-3 AC Characteristics Measurement Conditions ........................................... 5-3
MKY02 User’s Manual
(for CUnet)
- viii -
Chapter 1 Concepts for Using MKY02 (HUB)
This chapter describes the concepts for using the MKY02 (HUB) in the CUnet.
1.1 Role of MKY02................................................................................1-3
1.2 Basic CUnet Configuration ...........................................................1-3
1.3 CUnet Configuration using HUBs ................................................1-4
1.4 Basic HUB Connection..................................................................1-9
1.5 Multi-drop Network of HUBs.......................................................1-10
1.6 Port Addition to HUB...................................................................1-11
1.7 MKY02 Operation.........................................................................1-12
1.8 Features of MKY02 ......................................................................1-14
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