GL850

Genesys Logic, Inc. GL850 USB 2.0 4-PORT HUB Controller Datasheet Revision 1.11 Jun. 25, 2003 GL850 USB 2.0 4-Port HUB Controller Copyright: Copyright © 2003 Genesys Logic Incorporated. All rights reserved. No part of the materials may be reproduced in any form or by any means without prior written consent of Genesys Logic Inc.. Disclaimer: ALL MATERIALS ARE PROVIDED "AS IS" WITHOUT EXPRESS OR IMPLIED WARRANTY OF ANY KIND. NO LICENSE OR RIGHT IS GRANTED UNDER ANY PATENT OR TRADEMARK OF GENESYS LOGIC INC.. GENESYS LOGIC HEREBY DISCLAIMS ALL WARRANTIES AND CONDITIONS IN REGARD TO MATERIALS, INCLUDING ALL WARRANTIES, IMPLIED OR EXPRESS, OF MERCHANTABILITY, FITNESS FOR ANY PARTICULAR PURPOSE, AND NON-INFRINGEMENT OF INTELLECTUAL PROPERTY. IN NO EVENT SHALL GENESYS LOGIC BE LIABLE FOR ANY DAMAGES INCLUDING, WITHOUT LIMITATION, DAMAGES RESULTING FROM LOSS OF INFORMATION OR PROFITS. PLEASE BE ADVISED THAT THE MATERIALS MAY CONTAIN ERRORS OR OMMISIONS. GENESYS LOGIC MAY MAKE CHANGES TO THE MATERIALS OR TO THE PRODUCTS DESCRIBED THEREIN AT ANY TIME WITHOUT NOTICE. Trademarks: is a registrated trademark of Genesys Logic Inc.. All trademarks are the properties of their respective owners. Office: Genesys Logic, Inc. 12F, No. 205, Sec. 3, Beishin Rd., Shindian City, Taipei, Taiwan Tel: (886-2) 8913-1888 Fax: (886-2) 6629-6168 http://www.genesyslogic.com ©2000-2003 Genesys Logic Inc.—All rights reserved. Page 2 GL850 USB 2.0 4-Port HUB Controller Revision History Revision 1.00 1.10 1.11 Date 05/22/2003 06/11/2003 06/25/2003 First formal release Add Bus Power statement Gang/Individual mode setting modified Add “4 port” bus power statement Description ©2000-2003 Genesys Logic Inc.—All rights reserved. Page 3 GL850 USB 2.0 4-Port HUB Controller TABLE OF CONTENTS CHAPTER 1 CHAPTER 2 CHAPTER 3 GENERAL DESCRIPTION........................................................................ 9 FEATURES ................................................................................................. 10 PIN ASSIGNMENT.................................................................................... 11 3.1 PINOUTS ....................................................................................................................... 11 3.2 PIN LIST........................................................................................................................ 12 3.3 PIN DESCRIPTIONS ....................................................................................................... 13 CHAPTER 4 CHAPTER 5 BLOCK DIAGRAM................................................................................... 15 FUNCTION DESCRIPTION .................................................................... 16 5.1 GENERAL ...................................................................................................................... 16 5.1.1 USPORT Transceiver......................................................................................... 16 5.1.2 PLL (Phase Lock Loop) ..................................................................................... 16 5.1.3 FRTIMER ........................................................................................................... 16 5.1.4 µC ......................................................................................................................... 16 5.1.5 UTM (USB2.0 Transceiver Macrocell Interface) ............................................ 16 5.1.6 USPORT logic ..................................................................................................... 16 5.1.7 SIE (Serial Interface Engine)............................................................................. 16 5.1.8 Control/Status register ....................................................................................... 16 5.1.9 REPEATER ........................................................................................................ 17 5.1.10 TT (Transaction Translator) ........................................................................... 17 5.1.11 REPEATER/TT routing logic ......................................................................... 17 5.1.11.1 Connected to 1.1 Host/Hub ...................................................................... 17 5.1.11.2 Connected to USB2.0 Host/Hub .............................................................. 18 5.1.12 DSPORT logic ................................................................................................... 18 5.1.13 DSPORT Transceiver....................................................................................... 18 5.2 CONFIGURATION AND I/O SETTINGS .......................................................................... 19 5.2.1 RESET# Setting .................................................................................................. 19 5.2.2 PGANG/SUSPND Setting .................................................................................. 20 5.2.3 SELF/BUS Power Setting .................................................................................. 21 5.2.4 LED Connections ................................................................................................ 22 5.2.5 EEPROM Setting................................................................................................ 22 5.3 USB PROTOCOLS ......................................................................................................... 23 ©2000-2003 Genesys Logic Inc.—All rights reserved. Page 4 GL850 USB 2.0 4-Port HUB Controller 5.3.1 Host Commands and Hub Answers .................................................................. 24 5.3.1.1 Standard Requests ...................................................................................... 24 5.3.1.2 Hub Class Requests .................................................................................... 25 5.4 DESCRIPTORS ............................................................................................................... 27 5.4.1 Full Speed Case ................................................................................................... 27 5.4.1.1 Device Descriptor ........................................................................................ 27 5.4.1.2 Device Qualifier Descriptor ....................................................................... 28 5.4.1.3 Configuration Descriptor ........................................................................... 28 5.4.1.4 Interface Descriptor.................................................................................... 29 5.4.1.5 Endpoint Descriptor ................................................................................... 29 5.4.1.6 Other Speed Configuration Descriptor..................................................... 30 5.4.1.7 Interface Descriptor combined with Other Speed Configuration Descriptor .................................................................................................... 30 5.4.1.8 Endpoint Descriptor combined with Other Speed Configuration Descriptor .................................................................................................... 31 5.4.1.9 String Descriptor......................................................................................... 31 5.4.2 High Speed Case ................................................................................................. 32 5.4.2.1 Device Descriptor ........................................................................................ 32 5.4.2.2 Device Qualifier Descriptor ....................................................................... 33 5.4.2.3 Configuration Descriptor ........................................................................... 33 5.4.2.4 Interface Descriptor.................................................................................... 34 5.4.2.5 Endpoint Descriptor in Configuration Descriptor .................................. 34 5.4.2.6 Other Speed Configuration Descriptor..................................................... 35 5.4.2.7 Interface Descriptor in Other Speed Configuration Descriptor............. 35 5.4.2.8 Endpoint Descriptor in Other Speed Configuration Descriptor ............ 36 5.4.2.9 String Descriptor......................................................................................... 36 5.4.3 Hub Class Descriptor ......................................................................................... 37 CHAPTER 6 ELECTRICAL CHARACTERISTICS .................................................... 38 6.1 MAXIMUM RATINGS .................................................................................................... 38 6.2 DC CHARACTERISTICS ................................................................................................ 38 CHAPTER 7 PACKAGE DIMENSION.......................................................................... 40 ©2000-2003 Genesys Logic Inc.—All rights reserved. Page 5 GL850 USB 2.0 4-Port HUB Controller LIST OF FIGURES FIGURE 3.1 - PINOUT DIAGRAM ........................................................................................ 11 FIGURE 4.1 - BLOCK DIAGRAM ......................................................................................... 15 FIGURE 5.1 - OPERATING IN USB1.1 SCHEME .................................................................. 17 FIGURE 5.2 - OPERATING IN USB2.0 SCHEME .................................................................. 18 FIGURE 5.3 - RESET# (EXTERNAL RESET) SETTING AND APPLICATION ........................ 19 FIGURE 5.4 - POWER ON SEQUENCE OF GL850 ................................................................ 20 FIGURE 5.5 - TIMING OF PGANG/SUSPND STRAPPING ................................................. 20 FIGURE 5.6 - GANG MODE SETTING ............................................................................... 21 FIGURE 5.7 - SELF/BUS POWER SETTING ...................................................................... 21 FIGURE 5.8 - LED CONNECTION ...................................................................................... 22 FIGURE 5.9 - SCHEMATICS BETWEEN GL850 AND 93C46............................................... 23 FIGURE 7.1 - GL850 64 PIN LQFP PACKAGE .................................................................. 40 ©2000-2003 Genesys Logic Inc.—All rights reserved. Page 6 GL850 USB 2.0 4-Port HUB Controller LIST OF TABLES TABLE 3.1 - PIN LIST ......................................................................................................... 12 TABLE 3.2 - PIN DESCRIPTIONS......................................................................................... 13 TABLE 5.1 - 93C46 CONFIGURATION................................................................................ 22 TABLE 5.2 - STANDARD REQUEST LIST............................................................................. 24 TABLE 5.3 - HUB CLASS REQUESTS LIST .......................................................................... 25 TABLE 5.4 - DEVICE DESCRIPTOR FOR FULL SPEED ........................................................ 27 TABLE 5.5 - DEVICE QUALIFIER FOR FULL SPEED ........................................................... 28 TABLE 5.6 - CONFIGURATION DESCRIPTOR FOR FULL SPEED......................................... 28 TABLE 5.7 - INTERFACE DESCRIPTOR FOR FULL SPEED .................................................. 29 TABLE 5.8 - ENDPOINT DESCRIPTOR FOR FULL SPEED.................................................... 29 TABLE 5.9 - OTHER SPEED CONFIGURATION DESCRIPTOR FOR FULL SPEED ................ 30 TABLE 5.10 - OTHER SPEED INTERFACE DESCRIPTOR FOR FULL SPEED........................ 30 TABLE 5.11 - OTHER SPEED ENDPOINT DESCRIPTOR FOR FULL SPEED ......................... 31 TABLE 5.12 - STRING INDEX0 FOR FULL SPEED ............................................................... 31 TABLE 5.13 - STRING INDEX1 FOR FULL SPEED ............................................................... 31 TABLE 5.14 - STRING INDEX2 FOR FULL SPEED ............................................................... 32 TABLE 5.15 - DEVICE DESCRIPTOR FOR HIGH SPEED...................................................... 32 TABLE 5.16 - DEVICE QUALIFIER FOR HIGH SPEED ........................................................ 33 TABLE 5.17 - CONFIGURATION DESCRIPTOR FOR HIGH SPEED ...................................... 33 TABLE 5.18 - INTERFACE DESCRIPTOR FOR HIGH SPEED................................................ 34 TABLE 5.19 - ENDPOINT DESCRIPTOR FOR HIGH SPEED ................................................. 34 TABLE 5.20 - OTHER SPEED CONFIGURATION DESCRIPTOR FOR HIHG SPEED .............. 35 TABLE 5.21 - OTHER SPEED INTERFACE DESCRIPTOR FOR HIGH SPEED ....................... 35 TABLE 5.22 - OTHER SPEED ENDPOINT DESCRIPTOR FOR HIGH SPEED ......................... 36 TABLE 5.23 - STRING INDEX0 FOR HIGH SPEED............................................................... 36 TABLE 5.24 - STRING INDEX1 FOR HIGH SPEED............................................................... 36 TABLE 5.25 - STRING INDEX2 FOR HIGH SPEED............................................................... 36 TABLE 5.26 - HUB CLASS DESCRIPTOR ............................................................................ 37 ©2000-2003 Genesys Logic Inc.—All rights reserved. Page 7 GL850 USB 2.0 4-Port HUB Controller TABLE 6.1 - MAXIMUM RATINGS ...................................................................................... 38 TABLE 6.2 - DC CHARACTERISTICS EXCEPT USB SIGNALS ........................................... 38 TABLE 6.3 - DC CHARACTERISTICS OF USB SIGNALS UNDER FS/LS MODE................. 38 TABLE 6.4 - DC CHARACTERISTICS OF USB SIGNALS UNDER HS MODE ...................... 39 ©2000-2003 Genesys Logic Inc.—All rights reserved. Page 8 GL850 USB 2.0 4-Port HUB Controller CHAPTER 1 GENERAL DESCRIPTION GL850 is a 4-port standard Universal Serial Bus (USB) hub controller complies with Universal Serial Bus Specification Revision 2.0. GL850 can be connected to an USB1.1 host/hub or an USB2.0 host/hub. When GL850 is connected to an USB1.1 host/hub, it works just like an USB1.1 hub; the upstream port will operate in full-speed (FS) and the downstream port can operate in full-speed or low-speed (LS). When GL850 is connected to an USB2.0 host/hub, it works as an USB2.0 hub; the upstream port will operate in high-speed (HS) and the downstream port can operate in high-speed, full-speed, or low-speed. The bandwidths of high speed, full speed, and low speed are 480 Mbps, 12 Mbps, and 1.5 Mbps respectively. GL850 embeds an 8-bit RISC processor to manipulate the control/status registers and responds to the requests from USB host. Firmware of GL850 will control its general purpose I/O (GPIO) to access the external EEPROM and then respond to the host the customized PID and VID configured in the external EEPROM. GL850 responds to the host the default settings in the internal ROM if there exists no external EEPROM. GL850 is designed for customers with much flexibility. Customers can easily design GL850 as 4-port self/bus powered, individual/ganged mode, by setting the I/O pins of GL850 (Ref. to Chapter 5). The more complicated settings such as PID, VID, and number of downstream ports settings are easily achieved by programming the external EEPROM. TT (transaction translator) is the main traffic control engine in an USB2.0 hub to handle the unbalanced traffic speed between the upstream port and the downstream ports. GL850 adopts single TT architecture, which shares the same TT buffer for all downstream devices. Each downstream port of GL850 supports two-color (green/amber) status LEDs to indicate normal/abnormal status. The downstream ports of GL850 can be configured as individual mode or gang mode (4 ports as a group) for power management. Gang mode is very helpful for cost consideration, since we can use one poly-fuse, but not expensive power switch chips, to detect over current. GL850 passes the current requirement (< 2.5mA) for bus-power mode when being suspended. The current consumption is smaller than 100mA for the GL850 silicon itself. The above requirements are necessary for a 4-port bus power hub. Under adequate PCB designing, GL850 provide a good choice for customers as a 4-port bus powered hub. Besides, GL850 can switch automatically between self-power mode and bus-power mode without re-plugging into the PC host. The slew rate control circuits and the power fail detection circuits inside this chip give better ESD and EMI abilities to GL850. GL850 is designed mainly for stand-alone hub. It can also be integrated into PC motherboard or any other compound devices to support USB hub function. ©2000-2003 Genesys Logic Inc.—All rights reserved. Page 9 GL850 USB 2.0 4-Port HUB Controller CHAPTER 2 FEATURES • Compliant to USB specification Revision 2.0 − 4 downstream ports − Upstream port supports both high-speed (HS) and full-speed (FS) traffic − Downstream ports support HS, FS, and low-speed (LS) traffic − 1 control pipe (endpoint 0, 64-byte data payload) and 1 interrupt pipe (endpoint 1, 1-byte data payload) − Backward compatible to USB specification Revision 1.1 On-chip 8-bit micro-processor − RISC-like architecture − USB optimized instruction set − Dual cycle instruction execution − Performance: 6 MIPS @ 12MHz − With 64-byte RAM and 2K internal ROM − Support customized PID, VID by reading external EEPROM − Support downstream port configuration by reading external EEPROM Single Transaction Translator (TT) architecture − Single TT shares the same TT control logics for all downstream port devices. This is the most cost effective solution for TT Each downstream port supports two-color status indicator, with automatic and manual modes compliant to USB specification Revision 2.0 Support both individual and gang modes of power management and over-current detection for downstream ports Conform to bus power requirements Automatic switching between self-powered and bus-powered modes Integrated USB2.0 transceiver 0.35um CMOS technology PLL embedded with external 12 MHz crystal Operate on 3.3 Volts Improved output drivers with slew-rate control for EMI reduction Internal power-fail detection for ESD recovery 64-pin LQFP package Applications: − Stand-alone USB hub − PC motherboard USB hub, Ducking of notebook − Any compound device to support USB HUB function • • • • • • • • • • • • • • ©2000-2003 Genesys Logic Inc.—All rights reserved. Page 10 GL850 USB 2.0 4-Port HUB Controller CHAPTER 3 PIN ASSIGNMENT 3.1 Pinouts PWREN3# PWREN4# OVCUR3# OVCUR4# AMBER3 AMBER4 GREEN2 GREEN3 GREEN4 34 RESET# DVDD DGND DVDD DGND TEST 48 AMBER2 PSELF DGND DVDD PGANG/SUSPND OVCUR2# PWREN2# OVCUR1# PWREN1# DGND DVDD GREEN1 AMBER1 AGND AVDD AVDD 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 1 47 46 45 44 43 42 41 40 39 38 37 36 35 DP4 33 32 31 30 29 28 27 26 DPH4 DMH4 DM4 AGND AVDD DP3 DPH3 DMH3 DM3 AGND AVDD XTAL2 XTAL1 AGND AVDD RREF 25 24 23 22 21 20 19 18 17 16 DP2 GL850 LQFP - 64 2 3 4 5 6 7 8 9 10 11 12 13 14 15 AGND AVDD AGND DMF0 DPF0 RPU DM1 DMH0 DMH1 DM2 DMH2 DPH0 DPH1 DP1 Figure 3.1 - Pinout Diagram ©2000-2003 Genesys Logic Inc.—All rights reserved. DPH2 Page 11 GL850 USB 2.0 4-Port HUB Controller 3.2 Pin List Table 3.1 - Pin List Pin# 1 2 3 4 5 6 7 8 9 Pin Name Type Pin# AGND DMF0 DMH0 DPH0 DPF0 RPU DM1 DMH1 DPH1 P B B B B B B B B B P P B B B B Pin Name Type Pin# B P P I O P P B P P B P P B B B Pin Name Type Pin# B B O P P I I I O I O B O P P O Pin Name Type O I P P B I O I O P P O O P P P 17 RREF 18 AVDD 19 AGND 20 XTAL1 21 XTAL2 22 AVDD 23 AGND 24 DM3 25 DMH3 26 DPH3 27 DP3 28 AVDD 29 AGND 30 DM4 31 DMH4 32 DPH4 33 DP4 34 GREEN4 35 AMBER4 36 DGND 37 DVDD 38 RESET# 39 TEST 40 OVCUR4# 41 PWREN4# 42 OVCUR3# 43 PWREN3# 44 GREEN3 45 AMBER3 46 DGND 47 DVDD 48 GREEN2 49 AMBER2 50 PSELF 51 DGND 52 DVDD PGANG/ 53 SUSPND 54 OVCUR2# 55 PWREN2# 56 OVCUR1# 57 PWREN1# 58 DGND 59 DVDD 60 GREEN1 61 AMBER1 62 AGND 63 AVDD 64 AVDD 10 DP1 11 AVDD 12 AGND 13 DM2 14 DMH2 15 DPH2 16 DP2 ©2000-2003 Genesys Logic Inc.—All rights reserved. Page 12 GL850 USB 2.0 4-Port HUB Controller 3.3 Pin Descriptions Table 3.2 - Pin Descriptions USB Interface Pin# 2,3,4,5 Pin Name Type B B B B B B USB signals for USPORT USB signals for DSPORT1 USB signals for DSPORT2 USB signals for DSPORT3 USB signals for DSPORT2 Description DMF0,DMH0, DPH0,DPF0 DM1,DMH1, 7,8,9,10 DPH1,DP 13,14, DM2,DMH2, 15,16 DPH2,DP2 24,25, DM3,DMH3, 26,27 DPH3,DP3 30,31, DM4,DMH4, 32,33 DPH4,DP4 6 RPU RPU connects 1.5K Ω resister to 3.3V. RPU can be set to disconnected by externally resetting RESET# A 510Ω resister must be connected between RREF and analog 17 RREF B ground (AGND). Note: USB signals must be carefully handled in PCB routing. For detailed information, please refer to GL850 Design Guideline. HUB Interface Pin# 56,54, 42,40 57,55, 43,41 60,48, 44,34 61,49, 45,35 50 Pin Name OVCUR1#~ OVCUR4# PWREN1#~ PWREN4# GREEN1~ GREEN4 AMBER1~ AMBER4 PSELF Type I (pu) O (pu) O (pd) O (pd) I Description Active low. Over current indicator for DSPORT1~ DSPORT4 For GANG mode, OVCUR1# is the only over current flag for GL850 Active low. Power enable output for DSPORT1~ DSPORT4 For GANG mode, PWREN1# is the only power enable output for GL850. Green LED indicator for DSPORT1~DSPORT4 Amber LED indicator for DSPORT4~DSPORT1 *AMBER[4~1] are also used to access the external EEPROM. For detailed information, please refer to Chapter 5. 0: GL850 is bus-powered. 1: GL850 is self-powered. This pin is default put in input mode after power-on reset. Individual/gang mode is strapped during this period. After the strapping period, this pin will be set to output mode, and then output high for normal mode. When GL850 is suspended, this pin will output low. *For detailed explanation, please see Chapter 5 Input: 0: individual, 1: gang Output: 0: suspend, 1: normal 53 PGANG/ SUSPND B (pd) ©2000-2003 Genesys Logic Inc.—All rights reserved. Page 13 GL850 USB 2.0 4-Port HUB Controller Clock and Reset Interface Pin# 20 21 38 Pin Name XTAL1 XTAL2 RESET# Type I O I Description 12MHz crystal clock input. 12MHz crystal clock output. Active low. External reset input, default pull high 100KΩ. When RESET# = low, whole chip is reset to the initial state. System Interface Pin# 39 Pin Name TEST Type I (pd) Description 0: Normal operation. 1: Chip will be put in test mode. Power / Ground Pin# Pin Name Type Description 11,18, 22,28, AVDD P Analog power input for analog circuits. 63,64 1,12,19, P Analog ground input for analog circuits. 23,29, AGND 62 37,47, DVDD P Digital power input for digital circuits. 52,59 36,46, DGND P Digital ground input for digital circuits. 51,58 Note: Analog circuits are quite sensitive to power and ground noise. PCB layout must take care the power routing and the ground plane. For detailed information, please refer to GL850 Design Guideline. Notation: Type O I B B/I B/O P A SO pu pd odpu Output Input Bi-directional Bi-directional, default input Bi-directional, default output Power / Ground Analog Automatic output low when suspend Internal pull up Internal pull down Open drain with internal pull up ©2000-2003 Genesys Logic Inc.—All rights reserved. Page 14 GL850 USB 2.0 4-Port HUB Controller CHAPTER 4 BLOCK DIAGRAM 12MHz D+ D- USPORT FRTIMER Transceiver PLL x40, x10 RAM ROM GPIO CPU USPORT UTMI Logic SIE Control/Status Register REPEATER TT (Transaction Translator) REPEATER / TT Routing Logic DSPORT1 Logic DSPORT2 Logic DSPORT3 Logic DSPORT4 Logic DSPORT Transceiver DSPORT Transceiver DSPORT Transceiver DSPORT Transceiver D+ D- LED/ OVCUR/ PWRENB D+ D- LED/ OVCUR/ PWRENB D+ D- LED/ OVCUR/ PWRENB D+ D- LED/ OVCUR/ PWRENB Figure 4.1 - Block Diagram ©2000-2003 Genesys Logic Inc.—All rights reserved. Page 15 GL850 USB 2.0 4-Port HUB Controller CHAPTER 5 FUNCTION DESCRIPTION 5.1 General 5.1.1 USPORT Transceiver USPORT (upstream port) transceiver is the analog circuit that supports both full-speed and high-speed electrical characteristics defined in chapter 7 of USB specification Revision 2.0. USPORT transceiver will operate in full-speed electrical signaling when GL850 is plugged into a 1.1 host/hub. USPORT transceiver will operate in high-speed electrical signaling when GL850 is plugged into a 2.0 host/hub. 5.1.2 PLL (Phase Lock Loop) Gl850 contains a 40x PLL and a 10x PLL. PLL generates the clock sources for the whole chip. The generated clocks are proven quite accurate that help in generating high speed signal without jitter. 5.1.3 FRTIMER This module implements hub (micro)frame timer. The (micro)frame timer is derived from the hub’s local clock and is synchronized to the host (micro)frame period by the host generated Start of (micro)frame (SOF). FRTIMER keeps tracking the host’s SOF such that GL850 is always safely synchronized to the host. The functionality of FRTIMER is described in section 11.2 of USB Specification Revision 2.0. 5.1.4 μC μC is the micro-processor unit of GL850. It is an 8-bit RISC processor with 2K ROM and 64 bytes RAM. It operates at 6MIPS of 12Mhz clock to decode the USB command issued from host and then prepares the data to respond to the host. In addition, μC can handle GPIO (general purpose I/O) settings and reading content of EEPROM to support high flexibility for customers of different configurations of hub. These configurations include self/bus power mode setting, individual/gang mode setting, downstream port number setting, device removable/non-removable setting, and PID/VID setting. 5.1.5 UTM (USB2.0 Transceiver Macrocell Interface) UTMI handles the low level USB protocol and signaling. It’s designed based on the Intel’s UTMI specification 1.01. The major functions of UTMI logic are to handle the data and clock recovery, NRZI encoding/decoding, Bit stuffing /de-stuffing, supporting USB2.0 test modes, and serial/parallel conversion. 5.1.6 USPORT logic USPORT implements the upstream port logic defined in section 11.6 of USB specification Revision 2.0. It mainly manipulates traffics in the upstream direction. The main functions include the state machines of Receiver and Transmitter, interfaces between UTMI and SIE, and traffic control to/from the REPEATER and TT. 5.1.7 SIE (Serial Interface Engine) SIE handles the USB protocol defined in chapter 8 of USB specification Revision 2.0. It co-works with μC to play the role of the hub kernel. The main functions of SIE include the state machine of USB protocol flow, CRC check, PID error check, and timeout check. Unlike USB1.1, bit stuffing/de-stuffing is implemented in UTMI, not in SIE. 5.1.8 Control/Status register Control/Status register is the interface register between hardware and firmware. This register contains the information necessary to control endpoint0 and endpoint1 pipelines. Through the firmware based architecture, GL850 possesses higher flexibility to control the USB protocol easily and correctly. ©2000-2003 Genesys Logic Inc.—All rights reserved. Page 16 GL850 USB 2.0 4-Port HUB Controller 5.1.9 REPEATER Repeater logic implements the control logic defined in section 11.4 and section 11.7 of USB specification Revision 2.0. REPEATER controls the traffic flow when upstream port and downstream port are signaling in the same speed. In addition, REPEATER will generate internal resume signal whenever a wakeup event is issued under the situation that hub is globally suspended. 5.1.10 TT (Transaction Translator) TT implements the control logic defined in section 11.14 ~ 11.22 of USB specification Revision 2.0. TT basically handles the unbalanced traffic speed between the USPORT (operating in HS) and DSPORTS (operating in FS/LS) of hub. GL850 adopts the single TT architecture to provide the most cost effective solution. Single TT shares the same buffer control module for each downstream port. 5.1.11 REPEATER/TT routing logic REPEATER and TT are the major traffic control machines in the USB2.0 hub. Under situation that USPORT and DSPORT are signaling in the same speed, REPEATER/TT routing logic switches the traffic channel to the REPEATER. Under situation that USPORT is in the high speed signaling and DSPORT is in the full/low speed signaling, REPEATER/TT routing logic switches the traffic channel to the TT. 5.1.11.1 Connected to 1.1 Host/Hub If an USB2.0 hub is connected to the downstream port of an USB1.1 host/hub, it will operate in USB1.1 mode. For an USB1.1 hub, both upstream direction traffic and downstream direction traffic are passing through REPEATER. That is, the REPEATER/TT routing logic will route the traffic channel to the REPEATER. USB1.1 HOST/HUB USPORToperating in FS signaling Traffic channel is routed to REPEATER REPEATER TT DSPORT operating in FS/LS signaling Figure 5.1 - Operating in USB1.1 scheme ©2000-2003 Genesys Logic Inc.—All rights reserved. Page 17 GL850 USB 2.0 4-Port HUB Controller 5.1.11.2 Connected to USB2.0 Host/Hub If an USB2.0 hub is connected to an USB2.0 host/hub, it will operate in USB2.0 mode. The upstream port signaling is in high speed with bandwidth of 480 Mbps under this environment. The traffic channel will then be routed to the REPEATER when the device connected to the downstream port is signaling also in high speed. On the other hand, the traffic channel will then be routed to TT when the device connected to the downstream port is signaling in full/low speed. USB2.0 HOST/HUB USPORToperating in HS signaling HS vs. HS: Traffic channel is routed to REPEATER REPEATER TT HS vs. FS/LS: Traffic channel is routed to TT DSPORT operating in HS signaling DSPORT operating in FS/LS signaling Figure 5.2 - Operating in USB2.0 scheme 5.1.12 DSPORT logic DSPORT (downstream port) logic implements the control logic defined in section 11.5 of USB specification Revision 2.0. It mainly manipulates the state machine, the connection/disconnection detection, over current detection and power enable control, and the status LED control of the downstream port. Besides, it also output the control signals to the DSPORT transceiver. 5.1.13 DSPORT Transceiver DSPORT transceiver is the analog circuit that supports high-speed, full-speed, and low-speed electrical characteristics defined in chapter 7 of USB specification Revision 2.0. In addition, each DSPORT transceiver accurately controls its own squelch level to detect the detachment and attachment of devices. ©2000-2003 Genesys Logic Inc.—All rights reserved. Page 18 GL850 USB 2.0 4-Port HUB Controller 5.2 Configuration and I/O Settings 5.2.1 RESET# Setting When RESET# is low enabled, the whole chip is put in initial state. In addition, RPU will disable the pull-up 1.5KΩ resister to 3.3V, which causes GL850 seems to be disconnected to the host. We suggest configure RESET# as following figure. Vbus is the 5V input from USB cable. GL850 will always be in disconnected state when USB cable is not plugged into host, even that GL850 is powered. RESETI RESET# Vbus(5V) C R AVDD(3.3V) 1.5K ohm RPU DPF0 On PCB Inside GL850 Figure 5.3 - RESET# (External Reset) setting and application GL850 internally contains a power on reset circuit. The power on sequence is depicted in the next picture. To fully control the reset process of GL850, we suggest the reset time applied in the external reset circuit should more than that of the internal reset circuit. ©2000-2003 Genesys Logic Inc.—All rights reserved. Page 19 GL850 USB 2.0 4-Port HUB Controller VCC(3.3V) Power good voltage, 2.5~2.8V ≒ 2.7 μs Internal reset External reset Figure 5.4 - Power on sequence of GL850 5.2.2 PGANG/SUSPND Setting To save pin count, GL850 uses the same pin to decide individual/gang mode as well as to output the suspend flag. The individual/gang mode is decided in the period of 1ms after power on reset. After that period of time, this pin is changed to output mode. GL850 outputs the suspend flag once it is globally suspended. For individual mode, a pull low resister greater than 100KΩ should be placed. For gang mode, a pull high resister greater than 100KΩ should be placed. In figure 5.6, we also depict the suspend LED indicator schematics. It should be noticed that the polarity of LED must be followed, otherwise the suspend current will be over than the current limitation (2.5mA). RESET# 1 ms GANG_CTL Input mode, strapping to decide individual or gang mode Output mode, indicating GL850 is in normal mode or suspend mode Figure 5.5 - Timing of PGANG/SUSPND strapping ©2000-2003 Genesys Logic Inc.—All rights reserved. Page 20 GL850 USB 2.0 4-Port HUB Controller GAND Mode DVDD(3.3V) DVDD(3.3V) "0": Individual Mode "1": GANG Mode 100K ohm Suspend LED Indicator SUSPNDO GANG_CTL 100K ohm Suspend LED Indicator Inside GL850 On PCB Individual Mode Figure 5.6 - GANG Mode Setting 5.2.3 SELF/BUS Power Setting GL850 can operate under bus power and conform to the power consumption limitation completely (suspend current < 2.5 mA, normal operation current < 100 mA). By setting PSELF, GL850 can be configured as a bus-power or a self-power hub. 1: Power Self PSELF 0: Power Bus Inside GL850 On PCB Figure 5.7 - SELF/BUS Power Setting ©2000-2003 Genesys Logic Inc.—All rights reserved. Page 21 GL850 USB 2.0 4-Port HUB Controller 5.2.4 LED Connections GL850 controls the LED lighting according to the flow defined in section 11.5.3 of Universal Serial Bus Specification Revision2.0. Both manual mode and Automatic mode are supported in GL850. When GL850 is globally suspended, GL850 will turn off the LED to save power. AMBER/GREEN LED DGND Inside GL850 On PCB Figure 5.8 - LED Connection 5.2.5 EEPROM Setting GL850 replies to host commands by the default settings in the internal ROM. GL850 also offers the ability to reply to the host according to the settings in the external EEPROM(93C46). The following table shows the configuration of 93C46. Table 5.1 - 93C46 Configuration 00h 00 08 VID_H 03h 04h 05h 06h 07h DEVICE FF FF FF FF FF FF FF FF VID_L PID_H PID_L CHKSUM FF PORT_NO REMOVABLE 01h 02h VENDOR XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX LENGTH 10 XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX 18 XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX PRODUCT XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX 20 LENGTH 28 XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX 30 XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX SERIAL 38 NUMBER XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX LENGTH 40 XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX 48 XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX Note: 1. VID_H/VID_L: high/low byte of VID value 2. PID_H/PID_L: high/low byte of PID value 3. CHKSUM: CHKSUM must equal to VID_H + VID_L + PID_H + PID_L + 1,otherwise firmware will ignore the EEPROM settings. ©2000-2003 Genesys Logic Inc.—All rights reserved. Page 22 GL850 USB 2.0 4-Port HUB Controller 4. PORT_NO: port number, value must be 1~4. 5. DEVICE REMOVALBE: PORT4 PORT3 PORT2 PORT1 REMOVABLE REMOVABLE REMOVABLE REMOVABLE 0: Device attached to this port is removable. 1: Device attached to this port is non-removable. 6. VENDOR LENGTH: offset 08h contains the length of the vendor string. Values of vendor string is contained from 09h~1fh. 7. PRODUCT LENGTH: offset 20h contains the length of product string. Values of product string is contained from 21h~37h. 8. SERIAL NUMBER LENGTH: offset 38h contains the value of serial number string. Values of serial number string is contained after offset 39h. The schematics between GL850 and 93C46 is depicted in the following figures: DVDD AMBER1 GREEN1 AMBER2 PGANG CS SK DI DO VCC NC NC GND 93C46 Figure 5.9 - Schematics Between GL850 and 93C46 GL850 firstly verifies the check sum after power on reset. If the check sum is correct, GL850 will take the configuration of 93C46 as part of the descriptor contents. To prevent the content of 93C46 from being over-written, amber LED will be disabled when 93C46 exists. 5.3 USB Protocols To behave as a standard USB2.0 hub, some protocols defined in Chapter 9 and Chapter 11 of Universal Serial Bus Specification Revision 2.0 must be followed. We firstly classify these standard requests and hub class requests in section 6.1. Descriptors are described in section 6.2, which contain the detailed information for the hub. ©2000-2003 Genesys Logic Inc.—All rights reserved. Page 23 GL850 USB 2.0 4-Port HUB Controller 5.3.1 Host Commands and Hub Answers An USB hub needs at least 2 endpoints to guarantee the normal operation. Endpoint 0 is the default control pipe. Endpoint 1 is the interrupt pipe. Host gets all the information about the hub and through the control pipe. Hub information like self/bus power and gang/individual mode is all replied to host via endpoint0. Interrupt pipe is to report to the host the updated change of hub status (power change and over current change, for example) and the updated status change of all downstream ports (connect change, suspend change, over current change, etc.). 5.3.1.1 Standard Requests Table 5.2 - Standard Request List Request GET_DESCRIPTOR (Device) GET_DESCRIPTOR (Device_Qualifier) GET_DESCRIPTOR (Configuration) GET_DESCRIPTOR (Other_Speed_Configur ation) GET_DESCRIPTOR (String Index0) GET_DESCRIPTOR (String Index1) GET_DESCRIPTOR (String Index2) SET_ADDRESS SET_CONFIGURATIO N GET_CONFIGURATI ON SET_INTERFACE SET_FEATURE (Remote wakeup ability) SET_FEATURE (Endpoint0 halt) no support SET_FEATURE (Endpoint1 halt) CLEAR_FEATURE (Remote wakeup ability) CLEAR_FEATURE (Endpoint0 halt) no support bmRequestType 10000000b 10000000b 10000000b bRequest wValue wIndex wLength 06h 06h 06h 0100h 0600h 0200h 0000h 0000h 0000h 0012h 000Ah 0019h Return Device Descriptor (Note1) Device_Qualifier Descriptor (Note1) Configuration+Interface+ Endpoint Descriptors (Note1) Other_Speed_ Configuration+Interface+ Endpoint Descriptors (Note1) String Descriptor Index0 (Note1) String Descriptor Index1 (Note1) String Descriptor Index2 (Note1) Zero length packet Zero length packet Configuration value Zero length packet Zero length packet Zero length packet Zero length packet Zero length packet Zero length packet 10000000b 10000000h 10000000h 10000000h 00000000b 00000000b 00000000b 00000001b 00000000b 00000010b 00000010b 00000000b 00000010b 06h 06h 06h 06h 05h 09h 08h 0Bh 03h 03h 03h 01h 01h 0700h 0300h 0301h 0302h 0000h 0000h 0409h 0409h 0019h 0004h 0020h 002Ch 0000h 0000h 0001h 0000h 0000h 0000h 0000h 0000h 0000h 0000h ~ 0000h 007Fh 0000h/ 0000h 0001h 0000h 0000h 0000h 0001h 0000h 0000h 0001h 0000h 0000h 0000h 0000h/ 0080h 0081h 0000h 0000h/ 0080h ©2000-2003 Genesys Logic Inc.—All rights reserved. Page 24 GL850 USB 2.0 4-Port HUB Controller CLEAR_FEATURE (Endpoint1 halt) GET_INTERFACE 00000010b 10000001b 01h 0Ah 0000h 0000h 0081h 0000h 0000h 0001h Zero length packet 00h Device status 0000h Endpoint0 status Endpoint1 status Zero length packet Zero length packet Zero length packet Zero length packet Zero length packet GET_STATUS 10000000b 00h 0000h 0000h 0002h (Device) GET_STATUS 10000001b 00h 0000h 0000h 0002h (Interface) GET_STATUS 0000h/ (Endpoint0) 10000010b 00h 0000h 0002h 0080h no support GET_STATUS 10000010b 00h 0000h 0081h 0002h (Endpoint1) SET_FEATURE 00000000b 03h 0002h 0100h 0000h (Test_J) SET_FEATURE 00000000b 03h 0002h 0200h 0000h (Test_K) SET_FEATURE 00000000b 03h 0002h 0300h 0000h (Test_SE0_NAK) SET_FEATURE 00000000b 03h 0002h 0400h 0000h (Test_Packet) SET_FEATURE 00000000b 03h 0002h 0500h 0000h (Test_Force_Enable) Note: 1. The detailed information for these descriptors is described in Section 6.2. 5.3.1.2 Hub Class Requests Table 5.3 - Hub Class Requests List Request GetHubDesciptor GetHubStatus GetPortStatus SetPortFeature (PORT_RESET) SetPortFeature (PORT_SUSPEND) SetPortFeature (PORT_POWER) ClearHubFeature (C_HUB_OVER_CUR RENT) ClearPortFeature (PORT_ENABLE) ClearPortFeature (PORT_SUSPEND) ClearPortFeature (PORT_POWER) ClearPortFeature (PORT_INDICATOR) bmRequestType 10100000b 10100000b 10100011b 00100011b 00100011b 00100011b 00100000b 00100011b 00100011b 00100011b 00100011b bRequest wValue wIndex wLength Return 06h 2900h 0000h 0009h Hub Descriptor (Note1) Hub status and change 00h 0000h 0000h 0004h status 0001h~ Port status and port 00h 0000h 0004h 0004h change status 0001h~ 0000h Zero length packet 03h 0004h 0004h 0001h~ 03h 0002h 0000h Zero length packet 0004h 0001h~ 0000h Zero length packet 03h 0008h 0004h 01h 01h 01h 01h 01h 0001h 0001h 0002h 0008h 0016h 0000h 0001h~ 0004H 0001h~ 0004H 0001h~ 0004H (Note2) 0000h 0000h 0000h 0000h 0000h Zero length packet Zero length packet Zero length packet Zero length packet Zero length packet ©2000-2003 Genesys Logic Inc.—All rights reserved. Page 25 GL850 USB 2.0 4-Port HUB Controller ClearPortFeature (C_PORT_CONNECTI ON) ClearPortFeature (C_PORT_RESET) ClearPortFeature (C_PORT_ENABLE) ClearPortFeature (C_PORT_SUSPEND) ClearPortFeature (C_PORT_OVER_CU RRENT) SetPortFeature (PORT_TEST:TEST_J) SetPortFeature (PORT_TEST:TEST_K ) SetPortFeature (PORT_TEST: TEST_SE0_NAK) SetPortFeature (PORT_TEST: TEST_PACKET) SetPortFeature (PORT_TEST: TEST_FORCE_ENAB LE) SetPortFeature (PORT_INDICATOR) ClearTTBuffer GetTTStatus ResetTT StopTT 00100011b 00100011b 00100011b 00100011b 00100011b 00100011b 00100011b 00100011b 00100011b 01h 01h 01h 01h 01h 03h 03h 03h 03h 0010h 0014h 0011h 0012h 0013h 0015h 0015h 0015h 0015h 0001h~ 0004h 0001h~ 0004h 0001h~ 0004h 0001h~ 0004h 0001h~ 0004h 0101h~ 0104h 0201h~ 0204h 0301h~ 0304h 0401h~ 0404h 0501h~ 0504h (Note2) 0001h 0001h 0001h 0001h 0000h 0000h 0000h 0000h 0000h 0000h 0000h 0000h 0000h Zero length packet Zero length packet Zero length packet Zero length packet Zero length packet Zero length packet Zero length packet Zero length packet Zero length packet 00100011b 00100011b 00100011b 10100011B 00100011b 00100011B 03h 03h 08h 0Ah 09h 0Bh 0015h 0016h (Note3) 0000h 0000h 0000h 0000h 0000h 0000h Zero length packet Zero length packet Zero length packet 08D0h? TT state 0000h 0000h Zero length packet Zero length packet Note: 1. Hub descriptor is described in Section 6.2. 2. High byte of wIndex is the port indicators selector code, low byte of wIndex is the port number. For detailed information, please refer to the section 11.24.2.13 of Universal Serial Bus Specification Revision 2.0. 3. The device address, endpoint number, and endpoint type of the full-/low-speed endpoint that may have a busy TT buffer must be specified in the wValue field. For detailed information, please refer to the table 11-18 of section 11.24.2.3 of Universal Serial Bus Specification Revision 2.0. ©2000-2003 Genesys Logic Inc.—All rights reserved. Page 26 GL850 USB 2.0 4-Port HUB Controller 5.4 Descriptors Descriptors contain all the information about the USB2.0 hub. Host asks different types of descriptors by different GET_DESCRIPTOR commands. Hub will reply to different GET_DESCRIPTOR the associated descriptors to let host know how to configure the hub. For an USB2.0 hub, the descriptors are: Device Descriptor Device Qualifier Descriptor Configuration Descriptor Interface Descriptor Endpoint Descriptor Other Speed Configuration Descriptor Hub Class-specific Descriptor String Descriptor Descriptors replied are different between full speed and high speed for an USB2.0 hub. Once an USB2.0 hub is plugged into a host/hub, it needs to firstly decide the host/hub is an USB1.1 host/hub or an USB2.0 host/hub. If the host/hub being plugged is an USB1.1 hub, GL850 replies to the host the full speed descriptors defined in section 6.2.1. Otherwise, GL850 replies the high speed descriptors defined in section 6.2.2. For hub class-specific descriptor, there’s no difference between full speed and high speed. 5.4.1 Full Speed Case 5.4.1.1 Device Descriptor Hub returns Device Descriptor when GET_DESCRIPTOR (DEVICE) command is requested. Table 5.4 - Device Descriptor for Full Speed Offset 0 1 2 4 5 6 7 8 10 12 14 15 16 17 bLength bDescriptorType bcdUSB bDeviceClass bDeviceSubClass bDeviceProtocol bMaxPacktSize0 idVendor idProduct bcdDevice iManufacturer idProduct iSerialNumber bNumConfigurations Field Value 12h 01h Description 18 bytes for this descriptor Device descriptor type I/O EEPROM Configuration Configuration Y Y Y Y Y Y - 0200h USB2.0 compliance 09h 00h 00h 40h Hub class code Subclass code Protocol code Max. packet size of endpoint0 Vendor ID of Genesys 05E3h Logic Inc. Product ID of Genesys 0660h Logic Inc. xxxxh Version Control 00h Index of vendor string 01h Index of product string 00h Index of serial number 01h Number of configuration ©2000-2003 Genesys Logic Inc.—All rights reserved. Page 27 GL850 USB 2.0 4-Port HUB Controller 5.4.1.2 Device Qualifier Descriptor Hub returns Device Qualifier Descriptor when GET_DESCRIPTOR (DEVICE_QUALIFIER) command is issued from host. Table 5.5 - Device Qualifier for Full Speed Offset 0 1 2 4 5 6 7 8 9 bLength bDescriptorType bcdUSB bDeviceClass bDeviceSubClass bDeviceProtocol bMaxPacketSize0 bNumConfigurations bReserved Field Value 0Ah 06h Description 10 bytes for this descriptor Device qualifier descriptor type Hub class code Subclass code Single TT Max. packet size for endpoint0 of other speed Number of other speed config. Reserved for future use I/O EEPROM Configuration Configuration - 0200h USB2.0 compliance 09h 00h 01h 40h 01h 00h 5.4.1.3 Configuration Descriptor When host issues GET_DESCRIPTOR (CONFIGURATION) command to the hub, hub will return Configuration Descriptor, Interface Descriptor, and Endpoint Descriptor in combination to the host. Table 5.6 - Configuration Descriptor for Full Speed Offset 0 1 2 4 5 6 7 8 bLength bDescriptorType wTotalLength bNumberInterface bConfigurationValue iConfiguration bmAttribute bMaxPower Field Value 09h 02h Description 9 bytes for this descriptor Configuration descriptor type Number of interfaces Configuration value Index of string descriptor Can switch between power and bus power Max. power = 100 mA self I/O EEPROM Configuration Configuration - 0019h Total 25 bytes 01h 01h 00h E0h 32h ©2000-2003 Genesys Logic Inc.—All rights reserved. Page 28 GL850 USB 2.0 4-Port HUB Controller 5.4.1.4 Interface Descriptor Interface Descriptor follows Configuration Descriptor for GET_DESCRIPTOR (CONFIGURATION) command. Table 5.7 - Interface Descriptor for Full Speed Offset 0 1 2 3 4 5 6 7 8 bLength bDescriptorType bIerfaceNumber bAlternateSetting bNumEndpoints bInterfaceClass bInterfaceSubClass bInterfaceProtocol iInterface Field Value 09h 04h 00h 00h 01h 09h 00h 00h 00h Description 9 bytes for this descriptor Interface descriptor type Interface number Alternate setting Number of endpoints Hub class code Subclass code Protocol code Index of string descriptor I/O EEPROM Configuration Configuration - 5.4.1.5 Endpoint Descriptor Endpoint Descriptor follows Interface Descriptor for GET_DESCRIPTOR (CONFIGURATION) command. Table 5.8 - Endpoint Descriptor for Full Speed Offset 0 1 2 3 4 6 bLength bDescriptorType bEpointAddress bAttribute wMaxPacketSize bInterval Field Value 07h 05h 81h 03h Description 7bytes for this descriptor Endpoint descriptor type Address of the endpoint Interrupt endpoint I/O EEPROM Configuration Configuration - Max. packet size of the 0001h endpoint ffh Polling interval (ms) ©2000-2003 Genesys Logic Inc.—All rights reserved. Page 29 GL850 USB 2.0 4-Port HUB Controller 5.4.1.6 Other Speed Configuration Descriptor An USB2.0 hub returns Other Speed Configuration Descriptor for the command GET_DESCRIPTOR (OTHER_SPEED_CONFIGURATION). An USB2.0 host will issue this command when the hub plugged is an USB2.0 hub. Table 5.9 - Other Speed Configuration Descriptor for Full Speed Offset 0 1 2 4 5 6 7 8 bLength bDescriptorType wTotalLength bNumberInterface bConfigurationValue iConfiguration bmAttribute bMaxPower Field Value 09h 07h 19h 01h 01h 00h E0h 32h Description 9 bytes for this descriptor Other speed descriptor type Total 25 bytes Number of interfaces Configuration value Index of string descriptor Can switch between self power and bus power Max. power = 100 mA I/O EEPROM Configuration Configuration - 5.4.1.7 Interface Descriptor combined with Other Speed Configuration Descriptor Other Speed Interface Descriptor is in combination after Other Speed Configuration Descriptor for the command GET_DESCRIPTOR (OTHER_SPEED_CONFIGURATION). Table 5.10 - Other Speed Interface Descriptor for Full Speed Offset 0 1 2 3 4 5 6 7 8 bLength bDescriptorType bIerfaceNumber bAlternateSetting bNumEndpoints bInterfaceClass bInterfaceSubClass bInterfaceProtocol iInterface Field Value 09h 04h 00h 00h 01h 09h 00h 00h 00h Description 9 bytes for this descriptor Interface descriptor type Interface number Alternate setting Number of endpoints Hub class code Subclass code Single TT Index of string descriptor I/O EEPROM Configuration Configuration - ©2000-2003 Genesys Logic Inc.—All rights reserved. Page 30 GL850 USB 2.0 4-Port HUB Controller 5.4.1.8 Endpoint Descriptor combined with Other Speed Configuration Descriptor Other Speed Endpoint Descriptor is in combination after Other Speed Interface Descriptor for the command GET_DESCRIPTOR (OTHER_SPEED_CONFIGURATION). Table 5.11 - Other Speed Endpoint Descriptor for Full Speed Offset 0 1 2 3 4 6 bLength bDescriptorType bEpointAddress bAttribute wMaxPacketSize bInterval Field Value 07h 05h 81h 03h Description 7bytes for this descriptor Endpoint descriptor type Address of the endpoint Interrupt endpoint I/O EEPROM Configuration Configuration - Max. packet size of the 0001h endpoint Polling interval = 0Ch (212-1) X 125 us 5.4.1.9 String Descriptor String Descriptor is replied for the command GET_DESCRIPTOR (STRING). Generally, one string contains the information for manufacturer and the other contains the information for the product. These strings can be configured in EERPOM. GL850 will read the data in the EEPROM to respond to the host. The information in the following table are the default settings of Genesys Logic Inc. Table 5.12 - String Index0 for Full Speed Offset 0 1 2 bLength bDescriptorType wLangid Field Value 04h 03h Description 4 bytes for this descriptor String descriptor type I/O EEPROM Configuration Configuration - 0409 Language : English Table 5.13 - String Index1 for Full Speed Offset 0 1 2 Field bLength bDescriptorType bString Value Description I/O EEPROM Configuration Configuration Y Y Y 16h 16 bytes for this descriptor 03h String descriptor type Unicode encoded manufacture string-USB2.0 Hub as default setting ©2000-2003 Genesys Logic Inc.—All rights reserved. Page 31 GL850 USB 2.0 4-Port HUB Controller Table 5.14 - String Index2 for Full Speed Offset 0 1 2 bLength bDescriptorType bString Field Value xxh 03h Description x bytes for this descriptor String descriptor type I/O EEPROM Configuration Configuration Y Y Y Unicode encoded product string – No default setting 5.4.2 High Speed Case 5.4.2.1 Device Descriptor High Speed Device Descriptor is replied when hub is operated in high speed mode. The content of high speed Device Descriptor is almost the same as Full Speed Device Descriptor, except the bDeviceProtocol value is 01h, which means GL850 is a single TT hub. Table 5.15 - Device Descriptor for High Speed Offset 0 1 2 4 5 6 7 8 10 12 14 15 16 17 bLength bDescriptorType bcdUSB bDeviceClass bDeviceSubClass bDeviceProtocol bMaxPacktSize0 idVendor idProduct bcdDevice iManufacturer idProduct iSerialNumber bNumConfigurations Field Value 12h 01h Description 18 bytes for this descriptor Device descriptor type I/O EEPROM Configuration Configuration Y Y Y Y Y Y - 0200h USB2.0 compliance 09h 00h 01h 40h Hub class code Subclass code Single TT Max. packet size of endpoint0 Vendor ID of Genesys 05E3h Logic Inc. Product ID of Genesys 0660h Logic Inc. xxxxh Version Control 00h 01h 00h 01h Index of vendor string Index of product string Index of serial number Number of configuration ©2000-2003 Genesys Logic Inc.—All rights reserved. Page 32 GL850 USB 2.0 4-Port HUB Controller 5.4.2.2 Device Qualifier Descriptor High Sped Device Qualifier Descriptor contains almost the same information as the Full Speed Device Qualifier Descriptor, except that bDeviceProtocol value is 00h. Table 5.16 - Device Qualifier for High Speed Offset 0 1 2 4 5 6 7 8 9 bLength bDescriptorType bcdUSB bDeviceClass bDeviceSubClass bDeviceProtocol bMaxPacketSize0 bNumConfigurations bReserved Field Value 0Ah 06h Description 10 bytes for this descriptor Device qualifier descriptor type Hub class code Subclass code Protocol code Max. packet size for endpoint0 of other speed Number of other speed config. Reserved for future use I/O EEPROM Configuration Configuration - 0200h USB2.0 compliance 09h 00h 00h 40h 01h 00h 5.4.2.3 Configuration Descriptor Information contained in High Speed Configuration Descriptor is the same as Full Speed Configuration Descriptor. Table 5.17 - Configuration Descriptor for High Speed Offset 0 1 2 4 5 6 7 8 bLength bDescriptorType wTotalLength bNumberInterface bConfigurationValue iConfiguration bmAttribute bMaxPower Field Value 09h 02h Description 9 bytes for this descriptor Configuration descriptor type Number of interfaces Configuration value Index of string descriptor Can switch between self power and bus power Max. power = 100 mA I/O EEPROM Configuration Configuration - 0019h Total 25 bytes 01h 01h 00h E0h 32h ©2000-2003 Genesys Logic Inc.—All rights reserved. Page 33 GL850 USB 2.0 4-Port HUB Controller 5.4.2.4 Interface Descriptor Interface Descriptor follows Configuration Descriptor for GET_DESCRIPTOR (CONFIGURATION) command. Table 5.18 - Interface Descriptor for High Speed Offset 0 1 2 3 4 5 6 7 8 bLength bDescriptorType bIerfaceNumber bAlternateSetting bNumEndpoints bInterfaceClass bInterfaceSubClass bInterfaceProtocol iInterface Field Value 09h 04h 00h 00h 01h 09h 00h 00h 00h Description 9 bytes for this descriptor Interface descriptor type Interface number Alternate setting Number of endpoints Hub class code Subclass code Single TT Index of string descriptor I/O EEPROM Configuratio Configuratio n n - 5.4.2.5 Endpoint Descriptor in Configuration Descriptor bInterval of High Speed Interface Descriptor is 0Ch, which is different from that of Full Speed Endpoint Descriptor. Table 5.19 - Endpoint Descriptor for High Speed Offset 0 1 2 3 4 6 bLength bDescriptorType bEpointAddress bAttribute wMaxPacketSize bInterval Field Value 07h 05h 81h 03h 01h 0Ch Description 7bytes for this descriptor Endpoint descriptor type Address of the endpoint Interrupt endpoint Max. packet size of the endpoint Polling interval = (212-1) X 125 us I/O EEPROM Configuration Configuration - ©2000-2003 Genesys Logic Inc.—All rights reserved. Page 34 GL850 USB 2.0 4-Port HUB Controller 5.4.2.6 Other Speed Configuration Descriptor Values in all the field of High Speed Other Speed Configuration Descriptor are the same as those of Full Speed Other Speed Configuration Descriptor. Table 5.20 - Other Speed Configuration Descriptor for Hihg Speed Offset 0 1 2 4 5 6 7 8 bLength bDescriptorType wTotalLength bNumberInterface bConfigurationValue iConfiguration bmAttribute bMaxPower Field Value 09h 07h 19h 01h 01h 00h E0h 32h Description 9 bytes for this descriptor Other speed descriptor type Total 25 bytes Number of interfaces Configuration value Index of string descriptor Can switch between self power and bus power Max. power = 100 mA I/O EEPROM Configuration Configuration - 5.4.2.7 Interface Descriptor in Other Speed Configuration Descriptor All the values in this descriptor are the same as those in Other Speed Interface Descriptor for full speed. Table 5.21 - Other Speed Interface Descriptor for High Speed Offset 0 1 2 3 4 5 6 7 8 bLength bDescriptorType bIerfaceNumber bAlternateSetting bNumEndpoints bInterfaceClass bInterfaceSubClass bInterfaceProtocol iInterface Field Value 09h 04h 00h 00h 01h 09h 00h 00h 00h Description 9 bytes for this descriptor Interface descriptor type Interface number Alternate setting Number of endpoints Hub class code Subclass code Protocol code Index of string descriptor I/O EEPROM Configuration Configuration - ©2000-2003 Genesys Logic Inc.—All rights reserved. Page 35 GL850 USB 2.0 4-Port HUB Controller 5.4.2.8 Endpoint Descriptor in Other Speed Configuration Descriptor Table 5.22 - Other Speed Endpoint Descriptor for High Speed Offset 0 1 2 4 5 6 bLength bDescriptorType bEpointAddress bAttribute wMaxPacketSize bInterval Field Value 07h 05h 81h 03h 01h FFh Description 7bytes for this descriptor Endpoint descriptor type Address of the endpoint Interrupt endpoint Max. packet size of the endpoint Polling interval (ms) I/O EEPROM Configuration Configuration - 5.4.2.9 String Descriptor All the values of all the String Descriptors for high speed are the same as those for full speed. Table 5.23 - String Index0 for High Speed Offset 0 1 2 bLength bDescriptorType wLangid Field Value 04h 03h Description 4 bytes for this descriptor String descriptor type I/O EEPROM Configuration Configuration - 0409 Language : English Table 5.24 - String Index1 for High Speed Offset 0 1 2 bLength Field Value 16h 03h Description 16 bytes for this descriptor String descriptor type I/O EEPROM Configuration Configuration Y Y Y bDescriptorType bString Unicode encoded manufacture string - USB2.0 Hub as default setting Table 5.25 - String Index2 for High Speed Offset 0 1 2 bLength bDescriptorType bString Field Value Description I/O EEPROM Configuration Configuration Y Y Y XXh x bytes for this descriptor 03h String descriptor type Unicode encoded product string – No default setting ©2000-2003 Genesys Logic Inc.—All rights reserved. Page 36 GL850 USB 2.0 4-Port HUB Controller 5.4.3 Hub Class Descriptor Hub Class Descriptor is replied to the host for the GET_DESCRIPTOR (HUB) command. There’s no difference in the content for full speed and high speed. Table 5.26 - Hub Class Descriptor Offset 0 1 2 4 5 6 7 8 bLength bDescriptorType bNbrPorts wHubCharacteristics bPwrOn2PwrGood bHubContrCurrent bDeviceRemoveable bPortPwrCtrlMask Field Value 09h 29h 04h 89h 80h 32h 64h 00h FFh Description 9 bytes for this descriptor Hub descriptor type Number of ports Individual mode Gang mode Time from power on to power good (2 ms) Maximum current (mA) All devices are removable For compatible to USB1.0 I/O EEPROM Configuration Configuration Y - ©2000-2003 Genesys Logic Inc.—All rights reserved. Page 37 GL850 USB 2.0 4-Port HUB Controller CHAPTER 6 ELECTRICAL CHARACTERISTICS 6.1 Maximum Ratings Table 6.1 - Maximum Ratings Symbol VCC VIN VOUT TA FOSC Power Supply Input Voltage Output Voltage Ambient Temperature under bias Frequency Parameter Min. -0.5 -0.5 -0.5 -60 Max. +3.6 5 +3.6 +100 12 MHz ± 100ppm Unit V V V o C 6.2 DC Characteristics Table 6.2 - DC Characteristics Except USB Signals Symbol PD VDD VIL VIH VTLH VTHL VOL VOH IOLK RDN RUP Parameter Power Dissipation Power Supply Voltage LOW level input voltage HIGH level input voltage LOW to HIGH threshold voltage HIGH to LOW threshold voltage LOW level output voltage when IOL=8mA HIGH level output voltage when IOH=8mA Leakage current for pads with internal pull up or pull down resistor Pad internal pull down resister Pad internal pull up resister Min. 3 2.0 1.36 1.36 2.4 30 81K 81K 103K 103K 181K 181K Typ. 3.3 1.48 1.48 Max. 3.6 0.9 1.62 1.62 0.4 Unit mA V V V V V V V µA Ω Ω Table 6.3 - DC Characteristics of USB Signals Under FS/LS Mode Symbol VOL VOH VDI VCM VSE CIN ILO ZDRV Parameter DPF/DMF static output LOW(RL of 1.5K to 3.6V ) DPF/DMF static output HIGH (RL of 15K to GND ) Differential input sensitivity Differential common mode range Single-ended receiver threshold Transceiver capacitance Hi-Z state data line leakage Driver output resistance Min. 2.8 0.2 0.8 0.2 -10 28 Typ. Max. 0.3 3.6 2.5 20 +10 43 Unit V V V V V pF µA Ω ©2000-2003 Genesys Logic Inc.—All rights reserved. Page 38 GL850 USB 2.0 4-Port HUB Controller Table 6.4 - DC Characteristics of USB Signals Under HS Mode Symbol VIL VIH VIL VIH VOL VOH CIN ILO ZDRV Parameter Low-level input voltage with HS termination resistor enabled, Pull-up resistor disconnected High-level input voltage with HS termination resistor enabled, Pull-up resistor disconnected Low-level input voltage with HS termination resistor enabled, Pull-up resistor connected High-level input voltage with HS termination resistor enabled, Pull-up resistor connected DPH/DMH static output LOW(RL of 1.5K to 3.6V ) DPH/DMH static output HIGH (RL of 15K to GND ) Transceiver capacitance Hi-Z state data line leakage Driver output resistance for USB2.0 HS Min. Typ. Max. Unit mV mV mV mV 0.3 2.8 -10 3.6 20 +10 V V pF µA Ω ©2000-2003 Genesys Logic Inc.—All rights reserved. Page 39 GL850 USB 2.0 4-Port HUB Controller CHAPTER 7 PACKAGE DIMENSION D D1 D2 D 0.05 A A2 A1 48 49 33 32 A E1 E2 E B 64 1 e b 17 4X L1 16 4X aaa C A B D bbb H A B D S c 01 0 - ddd M C A B s D s C ccc C SEATING PLANE CONTROLDIMENSIONSAREIN MILLIMETERS. MILLIMETER INCH SY MBOL MIN. NOM. MAX. MIN. NOM. MAX. R1 0.063 1.60 A 0.006 0.15 0.002 0.05 A1 R2 1.35 1.40 1.45 0.053 0.055 0.057 A2 H 0.472BASIC 12.00BASIC D GAGE PLANE 0.472BASIC 12.00BASIC E 0.25mm 0.393BASIC 10.00BASIC D1 S L 0.393BASIC 10.00BASIC E1 03 7.50BASIC 0.295BASIC D2 7.50BASIC 0.295BASIC E2 0.08 0.003 R1 0.08 0.20 0.003 0.008 R2 0 3.5 7 3.5 7 0 0 0 0 01 NOTES : 11 12 13 11 12 13 02 11 12 13 11 12 13 1. DIMENSIONS D1 AND E1 DO NOT INCLUDE MOLD 03 PROTRUSION. ALLOWABLE PROTRUSION IS 0.25 mm PER 0.09 0.20 0.004 0.008 c SIDE. D1 AND E1 ARE MAXIMUM PLASTIC BODY SIZE 0.45 0.60 0.75 0.018 0.024 0.030 L DIMENSIONS INCLUDING MOLD MISMATCH. 1.00REF 0.039REF L1 0.20 0.008 S 2. DIMENSION b DOES NOT INCLUDE DAMBAR PROTRUSION. 0.17 0.20 0.27 0.007 0.008 0.011 b ALLOWABLE DAMBAR PROTRUSION SHALL NOT CAUSE THE 0.50BASIC 0.020BASIC e LEAD WIDTH TO EXCEED THE MAXIMUM b DIMENSION BY TOLERANCESOF FORMAND POSITION MORE THAN 0.08mm. DAMBAR CAN NOT BE LOCATED ON THE 0.008 0.20 aaa LOWER RADIUS OR THE FOOT. MINIMUM SPACE BETWEEN 0.008 0.20 bbb PROTRUSION AND AN ADJACENT LEAD IS 0.07mm. 0.003 0.08 ccc 0.003 0.08 ddd 02 - Figure 7.1 - GL850 64 Pin LQFP Package ©2000-2003 Genesys Logic Inc.—All rights reserved. Page 40