ASIX AX88760 Manual

Usb 2.0 mtt hub and usb2.0 to ethernet combo controller
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Features
USB 2.0 MTT Hub
Fully compliant with Universal Serial Bus
Specification Revision 2.0
Supports USB HS (480Mbps), FS (12Mbps) and
LS (1.5Mbps) modes
Three downstream ports and one upstream port
with integrated USB 2.0 transceivers
Multiple Transaction Translator (MTT) provides
respective TT control logics for each downstream
port
Supports one suspend LED indicator and three
downstream port status LED indicator
On-chip 8-bit micro-processor (6 MIPS @12MHz)
with 64-byte RAM and 2K internal ROM
Built-in upstream port 1.5KΩ pull-up and
downstream port 15KΩ pull-down resistors
Supports both individual and gang modes of power
management and over-current detection for
downstream ports
Supports compound-device (non-removable in
downstream ports) by I/O pin configuration
Improves output drivers with slew-rate control for
EMI reduction
Internal power-fail detection for ESD recovery
10/100M Fast Ethernet Controller
Integrates 10/100Mbps Fast Ethernet MAC/PHY
IEEE 802.3 10Base-T/100Base-TX compatible
Supports twisted pair crossover detection and
auto-correction (HP Auto-MDIX)
Embedded 16KB SRAM for RX packet buffering
and 8KB SRAM for TX packet buffering
Supports both Full-duplex with flow control and
Half-duplex with backpressure operation
Product Description
The AX88760 is a high performance and highly integrated USB/Ethernet and USB/USB connectivity solution which
contains an USB 2.0 hub, three downstream USB 2.0 transceivers, an upstream USB 2.0 transceiver, a 10/100M Ethernet
PHY, a 10/100M Ethernet MAC, a EEPROM controller, and a 24KB SRAM. The AX88760 is targeted for many
applications such as desktops, notebook PC's, Ultra-Mobile PC's, docking stations, game consoles, multifunction
printers, digital-home appliances, and any embedded system using a standard USB port.
Always contact ASIX Electronics for possible updates before starting a design.
This data sheet contains new products information. ASIX Electronics reserves the rights to modify product specification without notice. No liability is
assumed as a result of the use of this product. No rights under any patent accompany the sale of the product.
ASIX ELECTRONICS CORPORATION
4F, NO.8, Hsin Ann Rd., Hsinchu Science Park, Hsin-Chu City, Taiwan, R.O.C. 300
TEL: 886-3-579-9500
USB2.0 to Ethernet Combo Controller
Document No: AX88760/V1.01/07/07/10
Supports 2 VLAN ID filtering, received VLAN
Tag (4 bytes) can be stripped off or preserved
MAC/PHY loop-back diagnostic capability
Support Wake-on-LAN Function
Supports Suspend mode and Remote Wakeup
via Link-up, Magic packet, MS wakeup frame
and external pin
Optional PHY power down during Suspend
mode
High performance packet transfer rate over USB
bus using proprietary burst transfer mechanism (US
Patent Approval)
Supports USB to Ethernet bridging or vice versa in
hardware
Supports 256/512 bytes (93c56/93c66) of serial
EEPROM (for storing USB Descriptors for USB to
LAN function)
Supports automatic loading of Ethernet ID, USB
Descriptors and Adapter Configuration from
EEPROM after power-on initialization
Integrates on-chip voltage regulator and only requires a
single 3.3V power supply
12MHz and 25MHz clock input from either crystal or
oscillator source
Integrates on-chip power-on reset circuit
Package type with 100-pin LQFP RoHS compliant
package
Operating temperature range: 0°C to 70°C
* IEEE is a registered trademark of the Institute of Electrical and
Electronic Engineers, Inc.
* All other trademarks and registered trademark are the property
of their respective holder
FAX: 886-3-579-9558
AX88760
USB 2.0 MTT HUB and
Released Date: 07/07/2010
http://www.asix.com.tw/

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Summary of Contents for ASIX AX88760

  • Page 1 Always contact ASIX Electronics for possible updates before starting a design. This data sheet contains new products information. ASIX Electronics reserves the rights to modify product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accompany the sale of the product.
  • Page 2 USB 2.0 MTT HUB and USB2.0 to Ethernet Combo Controller The AX88760’s integrated USB hub is fully compliant with USB 2.0 Specification and supports Low-Speed, Full-Speed, and High-Speed downstream devices on all of the enabled downstream ports. The AX88760 implements multiple TT architecture that provides dedicated TT to each downstream (DS) port, which guarantee maximum bandwidth for each connected device when operating multiple mixed-speed peripherals device.
  • Page 3: Table Of Contents

    ..............................5   LOCK IAGRAM   ..............................6   INOUT IAGRAM     SIGNAL DESCRIPTION ............................ 7   AX88760 P .......................... 7   INOUT ESCRIPTION   ............................10   ARDWARE ETTING     2.2.1 SELF/BUS Power mode setting ........................ 10  ...
  • Page 4 AX88760 USB 2.0 MTT HUB and USB2.0 to Ethernet Combo Controller   APPENDIX A: DISABLE AX88760 VOLTAGE REGULATOR ................33 List of Figures   : AX88760 A ....................2   IGURE PPLICATION LOCK IAGRAM   ..........................2   IGURE ARGET PPLICATIONS  ...
  • Page 5: Introduction

    AX88760 USB 2.0 MTT HUB and USB2.0 to Ethernet Combo Controller 1.0 Introduction 1.1 Block Diagram : AX88760 Block Diagram Figure 3 ASIX ELECTRONICS CORPORATION...
  • Page 6: Pinout Diagram

    29 ETHER_SPEED XTL25I 98 28 ETHER_FULL XTL25O 99 27 PSELF GND18A 100 26 VCC3IO 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 : AX88760 Pinout Diagram Figure 4 ASIX ELECTRONICS CORPORATION...
  • Page 7: Signal Description

    Schmitt Trigger tolerant Analog Input Bi-directional I/O, 3.3V Tri-stateable Note: Every output or bi-directional I/O pin is 8mA driving strength. 2.1 AX88760 Pinout Description Pin Name Type Pin No Pin Description USB signals for USPORT (Upstream Port) USB signals for DSPORT1 (Downstream Port 1)
  • Page 8 General Purpose Input/ Output Pin 0 or PME (Power Management Event). This pin is default as input pin after power-on reset. GPIO_0 also can be defined as PME output to indicate wakeup event detected. Please refer to 4.1.2 Flag of bit 12 (PME_PIN). ASIX ELECTRONICS CORPORATION...
  • Page 9: Table 1 : Ax88760 Pinoutd

    GND3A3 Analog ground for Ethernet PHY. VCC18A 9, 97 1.8V Analog power for Ethernet PHY and 25MHz crystal oscillator. GND18A 12, 100 Analog ground for Ethernet PHY and 25MHz crystal oscillator. Table 1 : AX88760 Pinout Description ASIX ELECTRONICS CORPORATION...
  • Page 10: Hardware Setting

    2.2 Hardware Setting 2.2.1 SELF/BUS Power mode setting The AX88760 is a high performance USB 2.0 MTT hub with integrated 10/100 Fast Ethernet controller and it is suitable to implement on those self-pwer applications such as the embedded system, docking station, etc.
  • Page 11: Non-Removable Port Setting

    2.2.4 Clock source setting The HUB controller supports optional 12/27 MHz clock source by SEL27_N pin. Name Description SEL27_N 0: XI pin clock source can be 27MHz OSC-in 1: XI/XO clock source is 12MHz XTAL or OSC-in ASIX ELECTRONICS CORPORATION...
  • Page 12: Function Description

    The poly fuse will open when over-current situation happening. This will make OVCUR_N to go to 0 volts then detects over-current situation. Poly Fuse Poly Fuse OVCUR3_N OVCUR1_N Device Device AX88760 Poly Fuse OVCUR2_N Device 3.1.2 Gang Mode Port Power Control Using Poly Fuse Poly Fuse AX88760 OVCUR1_N Device Device Device ASIX ELECTRONICS CORPORATION...
  • Page 13: Usb To Ethernet Bridge, 10/100M Ethernet Controller And Phy

    3.4 Reset Generation The AX88760 integrates an internal power-on-reset circuit, which can simplify the external reset circuitry on PCB design. The power-on-reset circuit generates a reset pulse to reset system logic after 1.8V core power ramping up to 1.2V (typical threshold).
  • Page 14: Serial Eeprom Memory Map

    Pause Frame Free Buffers Low Water Mark Length of Full-Speed Device Descriptor (bytes) EEPROM Offset of Full-Speed Device Descriptor Length of Full-Speed Configuration Descriptor EEPROM Offset of Full-Speed Configuration (bytes) Descriptor Table 2 : Serial EEPROM Memory Map for Ethernet Controller ASIX ELECTRONICS CORPORATION...
  • Page 15: Word Count For Preload (00H)

    1: PME output is a Push-Pull driver. 0: PME output to function as an open-drain buffer (default). PME_IND: PME indication. 1: A 1.363ms pulse active when detecting wakeup event. 0: A static signal active when detecting wakeup event (default). ASIX ELECTRONICS CORPORATION...
  • Page 16: Node Id (04~06H)

    This value is latched into embedded Ethernet PHY right after it leaves reset. After that, software driver can still make change Ethernet PHY link ability through vendor command PHY Write Register to access embedded Ethernet PHY register. ASIX ELECTRONICS CORPORATION...
  • Page 17: Max Packet Size High/Low Byte (10H)

    Stop sending Pause frame when free buffer > Low Water Mark (default = 54h) Start sending Pause frame when free buffer < High Water Mark (default = 24h) Total free buffer count = 0 : Water level setting for flow control Figure 5 ASIX ELECTRONICS CORPORATION...
  • Page 18: Eeprom Default Settings For Ethernet Controller

    EEPROM mounted on target system PCB during manufacturing process. Below table shows AX88760’s hardware default EEPROM settings being used in the case of blank EEPROM on board. Each of the address offset contains 16-bit data from left to right representing the low-byte and high-byte, respectively.
  • Page 19: An Example Of Eeprom Settings For Ethernet Controller

    FF FF FF FF FF FF 32 00 41 00 0x80~FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF Table 4 : An Example of EEPROM Settings for Ethernet Controller ASIX ELECTRONICS CORPORATION...
  • Page 20: Eeprom User-Defined Fields For Ethernet Controller

    Vender ID (VID) 0x24 95 0B ASIX’s VID is 0x0B95 0x44 Product ID (PID) 0x25 2A 77 The PID of AX88760’s 0x45 Ethernet controller Node ID 0x04 ~0x06 00 00 00 00 00 01 Node ID 0 ~ 5 Power Mode...
  • Page 21 Power Mode Remote EEPROM Offset 0x01 EEPROM Offset 0x2C and 0x4C Wakeup Low Byte High Byte Low Byte High Byte Self Power Enable Disable Table 6 : Power Mode and Remote Wakeup Setting for Ethernet Controller ASIX ELECTRONICS CORPORATION...
  • Page 22 34 bytes total in the entire string, including the length indication byte. The second byte is the string type indication, which should be 0x03 for ASCII characters. The actual characters of desired string start from the byte. ASIX ELECTRONICS CORPORATION...
  • Page 23: Electrical Specifications

    Input voltage of 3.3 V I/O with 5V tolerance 5.25 Commercial junction operating temperature ℃ Commercial operating temperature ℃ Thermal Characteristics Symbol Parameter Rating Unit Thermal resistance of junction to case 16.8 °C/W Θ Thermal resistance of junction to ambient 50.8 °C/W Θ ASIX ELECTRONICS CORPORATION...
  • Page 24: Leakage Current And Capacitance

    KΩ Input leakage current Vin = VCC3IO or 0 ±1 μA Input leakage current with pull-up Vin = 0 μA resistance Input leakage current with Vin = VCC3IO μA pull-down resistance Tri-state output leakage current ±1 μA ASIX ELECTRONICS CORPORATION...
  • Page 25: Dc Characteristics Of 3.3V With 5V Tolerance I/O Pins

    Quiescent current at 25 ℃. VCC3R3_D = 3.3V μA VCC3R3_D = 3.3V μA Iq_125℃ Quiescent current at 125 VCC3R3_D = 3.3V μA ℃. VCC3R3_D = 3.3V μA Cout Output external capacitor. μF Allowable effective series Ω resistance of external capacitor. ASIX ELECTRONICS CORPORATION...
  • Page 26: Power Consumption

    5.2 Power Consumption Symbol Description Conditions Current Unit Active HUB ports Host Device Typical Isusp AX88760 only (1.8V) Suspend 58.5 (Remote-wakeup disable) AX88760 only (3.3V) AX88760 only (1.8V) Suspend/Ethernet 100Mbps 75.0 (Remote-wakeup enable) AX88760 only (3.3V) 10.0 AX88760 only (1.8V) Suspend/Ethernet unlink 47.0...
  • Page 27: Power-Up Sequence

    USB 2.0 MTT HUB and USB2.0 to Ethernet Combo Controller 5.3 Power-up Sequence At power-up, the AX88760 requires the VCC3R3_D/VCC3IO/VCC3A3/VCC33A_H/ VCC33A_PLL power supply to rise to nominal operating voltage within Trise3 and the V18F/VCCK/VCC18A power supply to rise to nominal operating voltage within Trise2.
  • Page 28: Ac Timing Characteristics

    XSCI/XTLI clock low time 41.6 L XSCI/XTLI P XTL25I H XTL25I L XTL25I XTL25I Symbol Parameter Condition Unit XTL25I clock cycle time 40.0 P XTL25I XTL25I clock high time 20.0 H XTL25I XTL25I clock low time 20.0 L XTL25I ASIX ELECTRONICS CORPORATION...
  • Page 29: Reset Timing

    EECK rising edge to EEDIO output delay time 2562 Tscs EECS output valid to EECK rising edge time 2560 Thcs EECK falling edge to EECS invalid time 7680 Tlcs Minimum EECS low time 23039 EEDIO input setup time EEDIO input hold time ASIX ELECTRONICS CORPORATION...
  • Page 30: Package Information

    AX88760 USB 2.0 MTT HUB and USB2.0 to Ethernet Combo Controller 6.0 Package Information AX88760 100-pin LQFP package A2 A1 pin 1 θ Symbol Millimeter 1.60 0.05 0.15 1.35 1.40 1.45 0.13 0.16 0.23 12.00 12.00 0.40 14.00 14.00 0.45 0.60...
  • Page 31: Ordering Information

    AX88760 USB 2.0 MTT HUB and USB2.0 to Ethernet Combo Controller 7.0 Ordering Information Part Number Description AX88760: Product Name (100 pin). AX88760 LF L: LQFP Package. F: Lead Free. ASIX ELECTRONICS CORPORATION...
  • Page 32: Revision History

    8.0 Revision History Revision Date Comment V1.00 2009/10/09 Initial release. V1.01 2010/07/07 1. Corrected some I/O type descriptions in Section 2.1. 2. Corrected some descriptions in Section 2.2.3. 3. Added more power consumption information in Section 5.2. ASIX ELECTRONICS CORPORATION...
  • Page 33: Appendix A: Disable Ax88760 Voltage Regulator

    The AX88760 integrates an on-chip 3.3V to 1.8V voltage regulator for single-power supply system design. If the system have 1.8V power source already, user may like to disable AX88760 voltage regulator and use the existing 1.8V power source (probably a higher efficiency version). In that case, user can connect VCC3R3_D and GND3R3 to ground, keep V18F open.
  • Page 34: Ontroller

    AX88760 USB 2.0 MTT HUB and USB2.0 to Ethernet Combo Controller 4F, No.8, Hsin Ann Rd., Hsinchu Science Park, Hsinchu, Taiwan, R.O.C. TEL: +886-3-5799500 FAX: +886-3-5799558 Email: support@asix.com.tw Web: http://www.asix.com.tw ASIX ELECTRONICS CORPORATION...

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