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Copyright (C) 2016-2017 Reserved by ASIX Electronics Corporation
AX78140/AX78120 Product Introduction
Revision 1.00
Mar. 14th, 2017
AX78140/AX78120 Product Introduction
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Copyright (C) 2016-2017 Reserved by ASIX Electronics Corporation
AX78140/AX78120 Product Introduction
Revision History
Revision
Date
Description
0.10
2016/06/15
Preliminary release
0.11
2016/10/11
1. Correct typos in Section 4.
1.00
2017/03/14
1. Updated the Selection Guide figure in Section 3.
2. Added Section 7 “Related Technical Archives”.
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Copyright (C) 2016-2017 Reserved by ASIX Electronics Corporation
AX78140/AX78120 Product Introduction
Table of Contents
1. Introduction ....................................................................................... 4
2. Block Diagram ................................................................................... 5
3. Selection Guide .................................................................................. 7
4. Ordering Information ....................................................................... 8
5. Typical Target Applications ............................................................. 9
6. AX78140/AX78120 Demo Boards .................................................. 10
6-1. AX78140 USB to 4S Demo Board .................................................................10
6-2. AX78140 USB to 2S1P Demo Board .............................................................12
6-3. AX78120 USB to 2S Demo Board .................................................................14
7. Related Technical Archives ............................................................ 15
List of Figures
Figure 1. AX78140 Block Diagram ................................................................................................................ 5
Figure 2. AX78120 Block Diagram ................................................................................................................ 6
Figure 3. USB Bridge Selection Guide ........................................................................................................... 7
Figure 4. Ordering Information ....................................................................................................................... 8
Figure 5. AX78140/AX78120 Typical Target Applications ........................................................................... 9
Figure 6. AX78140 USB to 4S Demo Board ................................................................................................ 10
Figure 7. AX78140 USB to 4S Demo Board Jumper Setting ....................................................................... 11
Figure 8. AX78140 USB to 2S1P Demo Board ............................................................................................ 12
Figure 9. AX78140 USB to 2S1P Demo Board Jumper Setting ................................................................... 13
Figure 10. AX78120 USB to 2S Demo Board .............................................................................................. 14
Figure 11. AX78120 USB to 2S Demo Board Jumper Setting ..................................................................... 14
Figure 12. Related Technical Archives ......................................................................................................... 16
Figure 13. Technical Archives Availability Type ......................................................................................... 16
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Copyright (C) 2016-2017 Reserved by ASIX Electronics Corporation
AX78140/AX78120 Product Introduction
1. Introduction
With the rapid proliferation of USB interface in the embedded world, developers are looking for
easiest ways to add USB to microcontroller-based applications in their design. ASIX’s new
AX781x0 family features three USB connectivity bridge solutions including USB 2.0 to Dual Serial
(AX78120), USB 2.0 to Quad Serial (AX78140) and USB 2.0 to Dual Serial and Single Parallel
(AX78140) controllers. Enabling smooth migration from legacy system using ASIX’s MCS78x0
series, AX78140/AX78120 provide pin-to-pin compatible and driver backward compatible with
MCS7840/MCS7820/MCS7810.
AX78140/AX78120 is a USB 2.0 to Quad/Dual Serial and Single Parallel controller. It has been
developed to connect a wide range of standard serial devices to a USB host.
The AX78140/AX78120, in 64/48-pin LQFP, are available with RoHS compliant package and
supports commercial grade operating temperature range from 0 to 70°C and industrial grade from -
40 to 85°C.
This document provides an overview of AX78140/AX78120 USB 2.0 to Multi I/O Controller
products.
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AX78140/AX78120 Product Introduction
2. Block Diagram
The following are AX78140/AX78120 block diagrams,
Figure 1. AX78140 Block Diagram
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AX78140/AX78120 Product Introduction
Figure 2. AX78120 Block Diagram
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AX78140/AX78120 Product Introduction
3. Selection Guide
The following is the selection guide of ASIX USB Bridge family for different requirement
applications. Please visit ASIX USB Bridge products web pages
http://www.asix.com.tw/products.php?op=ProductList&PLine=74&PSeries=109 and contact ASIX's
Sales (sales@asix.com.tw) for details.
Figure 3. USB Bridge Selection Guide
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AX78140/AX78120 Product Introduction
4. Ordering Information
The following are the ordering information of AX78140/AX78120 silicon and AX78140/AX78120
4S/2S1P/2S demo boards. Please contact ASIX's Sales (sales@asix.com.tw) for more details.
Part Number
Description
AX78140 LF
64-pin LQFP lead Free package, commercial temperature range:
0 to 70°C.
AX78140 LI
64-pin LQFP lead Free package, Industrial temperature range:
-40 to 85°C.
AX78120 LF
48-pin LQFP lead Free package, commercial temperature range:
0 to 70°C.
AX78120 LI
48-pin LQFP lead Free package, Industrial temperature range:
-40 to 85°C.
AX781x0 Demo Boards
Description
AX78140 USB to 4S Demo Board
This is a USB to 4S adapter for AX78140 USB to
4S applications
AX78140 USB to 2S1P Demo Board
This is a USB to 2S1P adapter for AX78140 USB to
2S1P applications
AX78120 USB to 2S Demo Board
This is a USB to 2S adapter for AX78120 USB to
2S applications
Figure 4. Ordering Information
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AX78140/AX78120 Product Introduction
5. Typical Target Applications
The following are AX78140/AX78120 typical target applications.
Figure 5. AX78140/AX78120 Typical Target Applications
AX78140
USB to 4S
AX78140
USB to 2S1P
AX78120
USB to 2S
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AX78140/AX78120 Product Introduction
6. AX78140/AX78120 Demo Boards
ASIX Electronics provides AX78140 4S/2S1P and AX78120 2S demo boards for users to evaluate
the basic functions of AX78140/AX78120 on different 4S/2S1P/2S target applications. If you need
to purchase the AX78140/AX78120 demo boards, please contact ASIX's Sales (sales@asix.com.tw)
for more details.
6-1. AX78140 USB to 4S Demo Board
Figure 6. AX78140 USB to 4S Demo Board
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AX78140/AX78120 Product Introduction
The following are the jumper configuration table of the AX78140 USB to 4S demo board. The I2C
EEPROM is optional for AX78140 4S applications.
Jumper
Setting
Description
J11
(default)
Get 5V power source from USB connector for Bus-power
application
Get 5V power source from 5V DC power jack for Self-
power application
J6
(default)
Set USB Max. Power to 500mA for Bus-power application
Set USB Max. Power to 100mA for Self-power application
J8/J9/J10
(default)
Pull high the RESET_SEL pin to set AX78140 RESET pin
active high.
Pull low the RESET_SEL pin to set AX78140 RESET pin
active low.
Figure 7. AX78140 USB to 4S Demo Board Jumper Setting
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AX78140/AX78120 Product Introduction
6-2. AX78140 USB to 2S1P Demo Board
Figure 8. AX78140 USB to 2S1P Demo Board
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AX78140/AX78120 Product Introduction
The following are the jumper configuration table of the AX78140 USB to 2S1P demo board. The
I2C EEPROM is required for AX78140 2S1P applications.
Jumper
Setting
Description
J11
(default)
Get 5V power source from USB connector for Bus-power
application
Get 5V power source from 5V DC power jack for Self-
power application
J8/J9/J10
(default)
Pull high the RESET_SEL pin to set AX78140 RESET pin
active high.
Pull low the RESET_SEL pin to set AX78140 RESET pin
active low.
Figure 9. AX78140 USB to 2S1P Demo Board Jumper Setting
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AX78140/AX78120 Product Introduction
6-3. AX78120 USB to 2S Demo Board
Figure 10. AX78120 USB to 2S Demo Board
The following are the jumper configuration table of the AX78120 USB to 2S demo board. The I2C
EEPROM is optional for AX78120 2S applications.
Jumper
Setting
Description
J10
(default)
Get 5V power source from USB connector for Bus-power
application
Get 5V power source from 5V DC power jack for Self-
power application
J11
(default)
Set USB Max. Power to 500mA for Bus-power application
Set USB Max. Power to 100mA for Self-power application
J4/J5/J6
(default)
Pull high the RESET_SEL pin to set AX78120 RESET pin
active high.
Pull low the RESET_SEL pin to set AX78120 RESET pin
active low.
Figure 11. AX78120 USB to 2S Demo Board Jumper Setting
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AX78140/AX78120 Product Introduction
7. Related Technical Archives
The following are AX78140/AX78120 related technical archives list for your reference. You
can download some basic AX78140/AX78120 related technical archives from
AX78140/AX78120 product web pages.
AX78140
USB 2.0 to Multi I/O (4S, 2S+1P) Controller
AX78120
USB 2.0 to Multi I/O (1S or 2S) Controller
AX78140/AX78120 Technical Archives
Type
Availability*
AX78140_120 Product Introduction
Document
This document
AX78140_120 Product Brief
Document
Public Release
AX78140 USB 2.0 to 4S Demo Board Reference
Schematic
Schematic
Public Release
AX78140 USB 2.0 to 2S1P Demo Board Reference
Schematic
Schematic
Public Release
AX78120 USB 2.0 to 2S Demo Board Reference
Schematic
Schematic
Public Release
AX78120 USB 2.0 to 1S Reference Schematic
Schematic
Public Release
AX78140_120 Windows 10/8.x 64-bit Driver
Driver
Public Release
AX78140_120 Windows 10/8.x 32-bit Driver
Driver
Public Release
AX78140_120 Windows 7/Vista/XP 64-bit Driver
Driver
Public Release
AX78140_120 Windows 7/Vista/XP 32-bit Driver
Driver
Public Release
AX78140_120 Linux/Android Drivers
Driver
Public Release
AX78140 Datasheet
Document
MyASIX Membership
AX78120 Datasheet
Document
MyASIX Membership
AX78140_120 Application Design Guide
Document
MyASIX Membership
AX78140 USB 2.0 to 4S/2S1P Demo Board PCB file
PCB
MyASIX Membership
AX78120 USB 2.0 to 2S Demo Board PCB file
PCB
MyASIX Membership
AX78140 USB 2.0 to 4S/2S1P Demo Board Gerber
files
Gerber
MyASIX Membership
AX78120 USB 2.0 to 2S Demo Board Gerber files
Gerber
MyASIX Membership
AX78140 USB 2.0 to 4S Demo Board BOM File
BOM
MyASIX Membership
AX78140 USB 2.0 to 2S1P Demo Board BOM File
BOM
MyASIX Membership
AX78120 USB 2.0 to 2S Demo Board BOM File
BOM
MyASIX Membership
AX78120 USB 2.0 to 1S Reference Schematic BOM
File
BOM
MyASIX Membership
AX78140 IBIS Model
IBIS
MyASIX Membership
AX78120 IBIS Model
IBIS
MyASIX Membership
AX78140 Reliability Report
Report
MyASIX Membership
AX78120 Reliability Report
Report
MyASIX Membership
AX78140_120 EEPROM User Guide
Document
Contact ASIX Sales
AX78140_120 Windows EEPROM Utility
Utility
Contact ASIX Sales
AX78140_120 Windows MP Tool
Utility
Contact ASIX Sales
AX78140 RoHS Report
Report
Contact ASIX Sales
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AX78140/AX78120 Product Introduction
AX78120 RoHS Report
Report
Contact ASIX Sales
AX78140_120 Performance Test Report
Report
Contact ASIX Sales
Figure 12. Related Technical Archives
Availability Type
Description
Public Release
Please download the technical archives from AX78140 product web page or
AX78120 product web page directly.
MyASIX Membership
Please register MyASIX membership from MyASIX register web page
(http://www.asix.com.tw/RegLogin.php?mod=thisis) first and then download the
technical archives from AX78140 product web page or AX78120 product web page.
Contact ASIX Sales
Please contact ASIX’s Sales (sales@asix.com.tw) for more details.
Figure 13. Technical Archives Availability Type
