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Genesys Logic, Inc.
GL850A
USB 2.0 Low-Power HUB Controller
Datasheet Revision 1.69 Jul. 19, 2007
GL850A USB 2.0 Low-Power HUB Controller
Copyright:
Copyright (c) 2007 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 registered 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
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Page 2
GL850A USB 2.0 Low-Power HUB Controller
Revision History
Revision 1.0 1.50 1.51 1.52 1.60 Date 03/21/2005 04/21/2005 04/25/2005 04/26/2005 06/20/2005 First release
1. Modify GREEN1~4 and AMBER1~4, Ch. 3.3, p.11
Description
2. Add MaxPower Describe, Ch. 5.2.5, p.20 3. Add Ch.6.4 -Power Consumption, p.23
Modify "MaxPoer" to "MaxPower", table 5.1, p.20 Modify Table3.3 Pin Descriptions(PSELF),p.11 Modify Table 8.1 Ordering Information,p27 1. Modify pin#46 ,pin#36 ,GL850A 48pin Pinout, Ch3.1,p.9 2. Modify pin#61 ,pin#49 ,GL850A 64pin Pinout Ch3.1,p.10 3. Add Pin name "EE_CS/EE_DI", Hub Interface,table3.4, p.12 4. Modify Fosc ,table 6.1- Maximum Ratings,p.24 5. Modify Vcc ,table 6.2 - Operating Ranges,p.24 Modify Pin Descriptions ,table3.3 ,p.12 Modify HUB Interface ,table3.3 Pin Description, p.13 Modify Pin List and Pin Descriptions of EE_CS, EE_DI, EE_SK, p.11~12 Add Input Voltage for digital I/O(Ovcur1-4,Pself,Reset) pins,p.24
1.61
07/07/2005
1.62 1.63 1.64 1.65 1.66 1.67 1.68 1.69
09/07/2005 09/15/2005 12/28/2005 03/29/2006 11/03/2006 01/17/2007 03/12/2007 07/19/2007
Modify 93C46 Configuration, Table 5.1, p.22 Modify Table 6.1-Maximum Ratings, p.24 Modify RESET# Setting, Ch5.2.1, p.18 Modify PGANG/SUSPND Setting, Ch5.2.2, p.19
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GL850A USB 2.0 Low-Power HUB Controller
TABLE OF CONTENTS CHAPTER 1 GENERAL DESCRIPTION................................................... 7 CHAPTER 2 FEATURES .............................................................................. 8 CHAPTER 3 PIN ASSIGNMENT ................................................................ 9 3.1 PINOUTS...................................................................................................... 9 3.2 PIN LIST.................................................................................................... 11 3.3 PIN DESCRIPTIONS ................................................................................... 12 CHAPTER 4 BLOCK DIAGRAM.............................................................. 15 CHAPTER 5 FUNCTION DESCRIPTION ............................................... 16 5.1 GENERAL.................................................................................................. 16 5.2 CONFIGURATION AND I/O SETTINGS....................................................... 18 CHAPTER 6 ELECTRICAL CHARACTERISTICS............................... 24 6.1 MAXIMUM RATINGS................................................................................. 24 6.2 OPERATING RANGES................................................................................ 24 6.3 DC CHARACTERISTICS ............................................................................ 24 6.4 POWER CONSUMPTION ............................................................................ 26 CHAPTER 7 PACKAGE DIMENSION..................................................... 27 CHAPTER 8 ORDERING INFORMATION ............................................ 29
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GL850A USB 2.0 Low-Power HUB Controller
LIST OF FIGURES
FIGURE 3.1GL850A 48 PIN LQFP PINOUT DIAGRAM ................................................... 9 FIGURE 3.2GL850A 64 PIN LQFP PINOUT DIAGRAM ................................................. 10 FIGURE 4.1 - GL850A BLOCK DIAGRAM (SINGLE TT).................................................... 15 FIGURE 5.1 - OPERATING IN USB 1.1 SCHEME ................................................................. 17 FIGURE 5.2 - OPERATING IN USB 2.0 SCHEME ................................................................. 18 FIGURE 5.3 - RESET# (EXTERNAL RESET) SETTING AND APPLICATION ........................ 19 FIGURE 5.4 - POWER ON SEQUENCE OF GL850A ............................................................. 19 FIGURE 5.5 - TIMING OF PGANG/SUSPND STRAPPING ................................................. 20 FIGURE 5.6 - GANG MODE SETTING ............................................................................... 20 FIGURE 5.7 - SELF/BUS POWER SETTING ...................................................................... 21 FIGURE 5.8 - LED CONNECTION ...................................................................................... 21 FIGURE 5.9 - SCHEMATICS BETWEEN GL850A AND 93C46 ............................................ 23 FIGURE 7.1 - GL850A 48 PIN LQFP PACKAGE ............................................................... 27 FIGURE 7.2 - GL850A 64 PIN LQFP PACKAGE ............................................................... 28
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GL850A USB 2.0 Low-Power HUB Controller
LIST OF TABLES
TABLE 3.1GL850A 48 PIN LIST .................................................................................... 11 TABLE 3.2 GL850A 64 PIN LIST................................................................................... 11 TABLE 3.3 - PIN DESCRIPTIONS ......................................................................................... 12 TABLE 5.1 - 93C46 CONFIGURATION ............................................................................... 22 TABLE 6.1 - MAXIMUM RATINGS...................................................................................... 24 TABLE 6.2 - OPERATING RANGES ..................................................................................... 24 TABLE 6.3 - DC CHARACTERISTICS EXCEPT USB SIGNALS............................................ 24 TABLE 6.4 - DC CHARACTERISTICS OF USB SIGNALS UNDER FS/LS MODE ................. 25 TABLE 6.5 - DC CHARACTERISTICS OF USB SIGNALS UNDER HS MODE ...................... 25 TABLE 6.6 - DC SUPPLY CURRENT ................................................................................... 26 TABLE 8.1 - ORDERING INFORMATION............................................................................. 29
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GL850A USB 2.0 Low-Power HUB Controller
CHAPTER 1 GENERAL DESCRIPTION
GL850A is Genesys Logic's advanced version Hub solutions which fully comply with Universal Serial Bus Specification Revision 2.0. GL850A embeds an 8-bit RISC processor to manipulate the control/status registers and respond to the requests from USB host. Firmware of GL850A 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. Default settings in the internal mask ROM is responded to the host without having external EEROM. GL850A is designed for customers with much flexibility. The more complicated settings such as PID, VID, and number of downstream ports settings are easily achieved by programming the external EEPROM (Ref. to Chapter 5). Each downstream port of GL850A supports two-color (green/amber) status LEDs to indicate normal/abnormal status. GL850A also support both Individual and Gang modes (4 ports as a group) for power management. The GL850A (64-pin) is a full function solution which supports both Individual/Gang power management modes and the two-color (green/amber) status LEDs. The low pin-count version GL850A (48-pin) only supports Gang mode. Please refer the table in the end of this chapter for more detail. To fully meet the cost/performance requirement, GL850A is a single TT hub solution for the cost requirement. Genesys Logic also provides GL852 for multiple TT hub solution to target on systems which require higher performance for full/low-speed devices, like docking station, embedded system ... etc.. Please refer to GL852 datasheet for more detailed information. *TT (transaction translator) is the main traffic control engine in an USB 2.0 hub to handle the unbalanced traffic speed between the upstream port and the downstream ports.
Product Name
Package type
Power mode
LED support
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r e b m A/ n e er G r e b m A/ n e er G
Page 7
gna G g n a G/l a u di vi d nI
PF QL84 PF QL46
A 058L G A 058L G
GL850A USB 2.0 Low-Power 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 (STT) - Single TT shares the same TT control logics for all downstream port devices. This is the most cost effective solution for TT. Multiple TT provides individual TT control logics for each downstream port. This is a performance better choice for USB 2.0 hub. Please refer to GL852 datasheet for more detailed information. 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 (64-pin LQFP) Support gang mode of power management and over-current detection for downstream ports Conform to bus power requirements Automatic switching between self-powered and bus-powered modes Integrate USB 2.0 transceiver PLL embedded with external 12 MHz crystal Operate on 3.3 Volts Embed serial resister for USB signals and integrate pull-up resister for upstream USB signal Improve output drivers with slew-rate control for EMI reduction Internal power-fail detection for ESD recovery 64/48-pin LQFP package Applications: - Stand-alone USB hub - PC motherboard USB hub, Docking of notebook - Any compound device to support USB HUB function
*
*
* * * * * * * * * * * * *
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GL850A USB 2.0 Low-Power HUB Controller
CHAPTER 3 PIN ASSIGNMENT
3.1 Pinouts
AMBER2/EE_DI GREEN2/EE_DO
AMBER3
36
35
34
33
32
31
30
29
28
27
26
PSELF DGND DVDD
PGANG/SUSPND
37 38 39 40 41 42 43 44 45 46 47 48
25
AMBER4
GREEN3
RESET#
DVDD
DGND
DVDD
DGND
TEST
NC
24 23 22 21 20 19
GREEN4 DP4 DM4 AGND AVDD DP3 DM3 AGND AVDD X2 X1 AGND
OVCUR1# PWREN1# DGND DVDD
GREEN1/EE_SK AMBER1/EE_CS
GL850A
LQFP - 48
18 17 16 15 14 13
DGND DVDD
10
11 RREF
DP0
DP1
DM0
DM1
AVDD
AGND
AVDD
AGND
DM2
DP2
Figure 3.1GL850A 48 Pin LQFP Pinout Diagram
(c)2000-2007 Genesys Logic Inc. - All rights reserved.
AVDD
12
1
2
3
4
5
6
7
8
9

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GL850A USB 2.0 Low-Power HUB Controller
Figure 3.2GL850A 64 Pin LQFP Pinout Diagram
(c)2000-2007 Genesys Logic Inc. - All rights reserved.

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GL850A USB 2.0 Low-Power HUB Controller 3.2 Pin List
Table 3.1GL850A 48 Pin List
Pin# 1 2 3 4 5 6 7 8 9 Pin Name AVDD AGND DM0 DP0 DM1 DP1 AVDD AGND DM2 Type Pin# P P B B B B P P B B B P Pin Name Type Pin# P I O P P B B P P B B O Pin Name Type Pin# O P P I I O O P P B O Pin Name Type I P P B I O P P O O P P
13 AGND 14 X1 15 X2 16 AVDD 17 AGND 18 DM3 19 DP3 20 AVDD 21 AGND 22 DM4 23 DP4 24 GREEN4
10 DP2 11 RREF 12 AVDD
Table 3.2
Pin# 1 2 3 4 5 6 7 8 9 Pin Name AGND NC DM0 DP0 NC NC NC DM1 DP1 Type Pin# P B B B B P P B
Pin Name
17 RREF 18 AVDD 19 AGND 20 X1 21 X2 22 AVDD 23 AGND 24 NC 25 DM3 26 DP3 27 NC 28 AVDD 29 AGND 30 NC
10 NC 11 AVDD 12 AGND 13 NC 14 DM2
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25 AMBER4 26 DGND 27 DVDD 28 RESET# 29 TEST 30 NC 31 GREEN3 32 AMBER3 33 DGND 34 DVDD 35 36 GREEN2/ EE_DO AMBER2/ EE_DI
37 PSELF 38 DGND 39 DVDD PGANG/ 40 SUSPND 41 OVCUR1# 42 PWREN1# 43 DGND 44 DVDD 45 46 GREEN1/ EE_SK AMBER1/ EE_CS
47 DGND 48 AVDD
GL850A 64 Pin List
Type Pin# B P P I O P P B B P P Pin Name Type Pin# O O P P I I I O I O O O P 49 Pin Name AMBER2/ EE_DI Type O I P P B I O I O P P O O P Page 11
33 NC 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
50 PSELF 51 DGND 52 DVDD PGANG/ 53 SUSPND 54 OVCUR2# 55 PWREN2# 56 OVCUR1# 57 PWREN1# 58 DGND 59 DVDD 60 61 GREEN1/ EE_SK AMBER1/ EE_CS
62 DGND
GL850A USB 2.0 Low-Power HUB Controller
15 DP2 16 NC B 31 DM4 32 DP4 B B 47 DVDD 48 GREEN2/ EE_DO P B 63 AVDD 64 AVDD P P
3.3 Pin Descriptions
Table 3.3 - Pin Descriptions
USB Interface Pin Name DM0,DP0 DM1,DP1 DM2,DP2 DM3,DP3 DM4,DP4 RREF GL850A 48Pin# 64 Pin# 3,4 5,6 9,10 18,19 22,23 11 3,4 8,9 14,15 25,26 31,32 17 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 DSPORT4 A 680 resister must be connected between RREF and analog ground (AGND). I/O Type Description
Note: USB signals must be carefully handled in PCB routing. For detailed information, please refer to GL850A Design Guideline. HUB Interface Pin Name GL850A 48Pin# 64 Pin#
OVCUR1#~4
I/O Type I (pu)
Description
41
56,54, 42,40 57,55, 43,41 60,48, 44,34 61,49, 45,35 50 53
PWREN1#~4
42 45,35, 31,24 46,36, 32,25 37 40
GREEN1~4 AMBER1~4 EE_CS/ EE_DI PSELF PGANG/ SUSPND
Active low. Over current indicator for DSPORT1~4 OVCUR1# is the only over current flag for GANG mode. Active low. Power enable output for DSPORT1~4 O PWREN1# is the only power-enable output for GANG mode. 1,3,4: O Green LED indicator for DSPORT1~4 2: B *GREEN[1~2] are also used to access the external EEPROM For detailed information, please refer to Chapter 5. (pd) O Amber LED indicator for DSPORT1~4 *Amber[1~2] are also used to access the external EEPROM (pd) I I B
Used to access the external EEPROM.
For detailed information, please refer to Chapter 5. 0: GL850A is bus-powered. 1: GL850A 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 Page 12
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GL850A USB 2.0 Low-Power HUB Controller
output mode, and then output high for normal mode. When GL850A is suspended, this pin will output low. *For detailed explanation, please see Chapter 5 Gang input:1, output: 0@normal, 1@suspend Individual input:0, output: 1@normal, 0@suspend Clock and Reset Interface Pin Name X1 X2 RESET# GL850A 48Pin# 14 15 28 64Pin# 20 21 38 I O I 12MHz crystal clock input. 12MHz crystal clock output. Active low. External reset input, default pull high 10K . When RESET# = low, whole chip is reset to the initial state. I/O Type Description
System Interface Pin Name TEST GL850A 48Pin# 64 Pin# 29 39 I (pd) 0: Normal operation. 1: Chip will be put in test mode. Power / Ground Pin Name AVDD AGND DVDD DGND GL850A 48Pin# 64 Pin#
1,7,12, 16,20 2,8,13, 17,21 27,34, 39,44 26,33, 38, 43,47 30 11,18,22, 28,64 1,12,19, 23,29 37,47, 52,59 36,46, 51,58,62 2,5~7, 10,13,16, 24,27,30, 33
I/O Type
Description
I/O Type P P P P
Description 3.3V analog power input for analog circuits. Analog ground input for analog circuits.
3.3V digital power input for digital circuits
Digital ground input for digital circuits.
NC
-
No connection
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 GL850A Design Guideline.
Notation: Type O I B B/I B/O P
Output Input Bi-directional Bi-directional, default input Bi-directional, default output Power / Ground Page 13
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GL850A USB 2.0 Low-Power HUB Controller
A SO pu pd odpu Analog Automatic output low when suspend Internal pull up Internal pull down Open drain with internal pull up
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GL850A USB 2.0 Low-Power 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 - GL850A Block Diagram (single TT)
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GL850A USB 2.0 Low-Power 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 GL850A is plugged into a 1.1 host/hub. USPORT transceiver will operate in high-speed electrical signaling when GL850A is plugged into a 2.0 host/hub.
5.1.2 PLL (Phase Lock Loop)
GL850A contains a 40x 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 GL850A 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 C
C is the micro-processor unit of GL850A. 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, C 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 UTMI (USB 2.0 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 USB 2.0 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 c 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 USB 1.1, 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, GL850A possesses higher flexibility to control the USB protocol easily and correctly.
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.
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GL850A USB 2.0 Low-Power HUB Controller 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. GL850A adopts the single TT architecture to provide the most cost effective solution. Single TT shares the same buffer control module for each downstream port. GL852 adopts multiple TT architecture to provide the most performance effective solution. Multiple TT provides control logics for each downstream port respectively. Please refer to GL852 datasheet for more detailed information.
5.1.11 REPEATER/TT routing logic
REPEATER and TT are the major traffic control machines in the USB 2.0 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 USB 2.0 hub is connected to the downstream port of an USB 1.1 host/hub, it will operate in USB 1.1 mode. For an USB 1.1 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 USB 1.1 scheme
5.1.11.2 Connected to USB 2.0 Host/Hub
If an USB 2.0 hub is connected to an USB 2.0 host/hub, it will operate in USB 2.0 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.
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GL850A USB 2.0 Low-Power HUB Controller
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 USB 2.0 scheme
5.12 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.
5.13 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.
5.2 Configuration and I/O Settings 5.2.1 RESET# Setting
GL850A integrates in the pull-up 1.5K resister of the upstream port. When RESET# is enabled, the internal 1.5K pull-up resister will be disconnected to the 3.3V power. To meet the requirement (p.141) of the USB 2.0 specification, pull-up resister should be disconnected while lacking of USB cable power (Vbus). Therefore, we suggest designing the RESET# circuit as following figure to meet the requirement mentioned above.
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Page 18
GL850A USB 2.0 Low-Power HUB Controller
RESET# C AVDD (3.3V)
R R
Vbus (5V)
1.5K ohm
33 ohm
DP0 On PCB
Inside GL850A
Figure 5.3 - RESET# (External Reset) setting and application
GL850A internally contains a power on reset circuit. The power on sequence is depicted in the next picture. To fully control the reset process of GL850A, we suggest the reset time applied in the external reset circuit should longer than that of the internal reset circuit. VCC(3.3V) Power good voltage, 2.5~2.8V
Internal reset
External reset
Figure 5.4 - Power on sequence of GL850A
5.2.2 PGANG/SUSPND Setting
To save pin count, GL850A uses the same pin to decide individual/gang mode as well as to output the suspend flag. The individual/gang mode is decided within 20us after power on reset. Then, about 50ms later, this pin is changed to output mode. GL850A outputs the suspend flag once it is globally suspended. For individual mode, a pull low resister greater than 100K should be placed. For gang mode, a pull high resister greater than 100K 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 spec limitation (2.5mA).
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2.7
s
Page 19
GL850A USB 2.0 Low-Power HUB Controller
RESET# 50ms GANG_CTL Input mode, strapping to decide individual or gang mode Output mode, indicating GL850A is in normal mode or suspend mode
Figure 5.5 - Timing of PGANG/SUSPND strapping
GAND Mode DVDD(3.3V) DVDD(3.3V)
"0": Individual Mode "1": GANG Mode
100K ohm
Suspend LED Indicator
PGANG SUSPNDO
GANG_CTL
100K ohm
Suspend LED Indicator
Inside GL850A On PCB Individual Mode
Figure 5.6 - GANG Mode Setting
5.2.3 SELF/BUS Power Setting
GL850A 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, GL850A can be configured as a bus-power or a self-power hub.
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Page 20
GL850A USB 2.0 Low-Power HUB Controller
1: Power Self
PSELF
0: Power Bus
Inside GL850A
On PCB
Figure 5.7 - SELF/BUS Power Setting
5.2.4 LED Connections
GL850A 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 GL850A. When GL850A is globally suspended, GL850A will turn off the LED to save power.
AMBER/GREEN LED
DGND Inside GL850A On PCB
Figure 5.8 - LED Connection
5.2.5 EEPROM Setting
GL850A replies to host commands by the default settings in the internal ROM. GL850A 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.
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Page 21
GL850A USB 2.0 Low-Power HUB Controller
Table 5.1 - 93C46 Configuration
Unit: Byte 00 00h 10h 20h 30h 40h 50h 60h 70h
SERIAL NUMBER LENGTH PRODUCT LENGTH
01
02
03
04
05
06
07
08
MaxPower
09
FF
0A
FF
0B 0C 0D 0E 0F
FF FF FF FF FF
VID_L VENDOR LENGTH
VID_H PID_L PID_H CHKSUM FF
PORT DEVICE REMOVABLE NUMBER
start Vendor string (ASC II code)
end
start Product String(ASC II code)
end
start
end
Serial Number String(ASC II code)
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. 4. PORT_NO: port number, value must be 1~4. 5. MaxPower : Describe the maximum power consumption, range=0Ma~500Ma . Value -> 00H~FAH (unit = 2Ma) 6. 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.
-
7. VENDOR LENGTH: offset 10h contains the length of the vendor string. Values of vendor string is contained from 11h~3Fh. 8. PRODUCT LENGTH: offset 40h contains the length of product string. Values of product string is contained from 41h~6Fh. 9. SERIAL NUMBER LENGTH: offset 70h contains the value of serial number string. Values of serial number string is contained after offset 71h.
(c)2000-2007 Genesys Logic Inc. - All rights reserved.
Page 22
GL850A USB 2.0 Low-Power HUB Controller
The schematics between GL850A and 93C46 is depicted in the following figures:
DVDD
EE_CS EE_SK EE_DI EE_DO
CS SK DI DO
VCC NC NC GND
93C46
Figure 5.9 - Schematics Between GL850A and 93C46
GL850A firstly verifies the check sum after power on reset. If the check sum is correct, GL850A 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.
(c)2000-2007 Genesys Logic Inc. - All rights reserved.
Page 23
GL850A USB 2.0 Low-Power HUB Controller
CHAPTER 6 ELECTRICAL CHARACTERISTICS
6.1 Maximum Ratings
Table 6.1 - Maximum Ratings
Symbol
VCC VIN VIN VINUSB TS FOSC Power Supply Input Voltage for digital I/O(EE_DO) pins Input Voltage for digital I/O(Ovcur1-4,Pself,Reset) pins Input Voltage for USB signal (DP, DM) pins Storage Temperature under bias Frequency
Parameter
Min.
-0.5 -0.5 -0.5 -0.5 -60
Max.
+3.6 +3.6 +5.25 +3.6 +100 12 MHz 0.05%
Unit
V V V V
o
C
6.2 Operating Ranges
Table 6.2 - Operating Ranges
Symbol
VCC VIND VINUSB TA Power Supply Input Voltage for digital I/O pins Input Voltage for USB signal (DP, DM) pins Ambient Temperature
Parameter
Min.
3.0 -0.5 0.5 0
Typ.
3.3 3.3 3.3 -
Max.
3.6 3.6 3.6 70
Unit
V V V
o
C
6.3 DC Characteristics
Table 6.3 - DC Characteristics Except USB Signals
Symbol
PD VDD VIL VIH VTLH VTHL VOL VOH IOLK RDN RUP 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
Parameter
Min.
70 3 2.0 1.36 1.36 2.4 81K 81K
Typ.
3.3 1.48 1.48 103K 103K
Max.
180 3.6 0.9 1.62 1.62 0.4 30 181K 181K
Unit
mA V V V V V V V
A
(c)2000-2007 Genesys Logic Inc. - All rights reserved.
Page 24
GL850A USB 2.0 Low-Power HUB Controller
Table 6.4 - 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.
0 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
A
Table 6.5 - DC Characteristics of USB Signals Under HS Mode
Symbol
VOL CIN ILO ZDRV
Parameter
DPH/DMH static output LOW(RL of 1.5K to 3.6V ) Transceiver capacitance Hi-Z state data line leakage Driver output resistance for USB 2.0 HS
Min.
4 -5 48
Typ.
4.5 0 45
Max.
0.1 5 +5 42
Unit
V Pf
A
(c)2000-2007 Genesys Logic Inc. - All rights reserved.
Page 25
GL850A USB 2.0 Low-Power HUB Controller
6.4 Power Consumption
Table 6.6 - DC Supply Current
Symbol Active ports
ISUSP
Condition Host
Suspend F 4
*2
Typ. Device
540/800*1 F H F F H F F H F F H F 93 180 115 91 160 111 89 140 106 87 115 102 80 95
Unit A
mA mA mA mA mA mA mA mA mA mA mA mA mA mA
H H F
3
H H
ICC 2
F H H F 1 H H No Active F H
*1: 48/64-pin package types *2: F: Full-Speed, H: High-Speed
(c)2000-2007 Genesys Logic Inc. - All rights reserved.
Page 26
GL850A USB 2.0 Low-Power HUB Controller
CHAPTER 7 PACKAGE DIMENSION
D D1 D2 D A A2
0.05 S
A1
36 37
25 24
Internal No.
A
E1 E2 E
N : Normal package G : Green package
GL850A
B
AAAAAAAGAA YWWXXXXXXXX
Date Code Lot Code
48 1
e b 4X
Version No.
13
bbb H A B D
L1
12 4X
aaa C A B D
c
01 0
ddd M C A B s D s
C ccc C
SEATING PLANE
02 R1 H R2
0.25mm
GAGE PLANE
S
L
03 -
NOTES : 1. DIMENSIONS D1 AND E1 DO NOT INCLUDE MOLD PROTRUSION. ALLOWABLE PROTRUSION IS 0.25 mm PER SIDE. D1 AND E1 ARE MAXIMUM PLASTIC BODY SIZE DIMENSIONS INCLUDING MOLD MISMATCH. 2. DIMENSION b DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL NOT CAUSE THE LEAD WIDTH TO EXCEED THE MAXIMUM b DIMENSION BY MORE THAN 0.08mm. DAMBAR CAN NOT BE LOCATED ON THE LOWER RADIUS OR THE FOOT. MINIMUM SPACE BETWEEN PROTRUSION AND AN ADJACENT LEAD IS 0.07mm.
CONTROL DIMENSIONS ARE IN MILLIMETERS. MILLIMETER INCH SYMBOL MIN. NOM. MAX. MIN. NOM. MAX. 1.60 0.063 A 0.006 A1 0.05 0.15 0.002 1.35 A2 1.40 1.45 0.053 0.055 0.057 0.354 BASIC D 9.00 BASIC E 9.00 BASIC 0.354 BASIC D1 7.00 BASIC 0.276 BASIC E1 7.00 BASIC 0.276 BASIC 5.50 BASIC 0.217 BASIC D2 E2 5.50 BASIC 0.217 BASIC 0.08 0.003 R1 R2 0.08 0.20 0.003 0.008 0 3.5 7 0 3.5 7 0 0 0 01 02 11 12 13 11 12 13 03 11 12 13 11 12 13 0.20 0.004 0.008 0.09 c 0.45 0.60 0.75 0.018 0.024 0.030 L L1 1.00 REF 0.039 REF 0.20 0.008 S 0.17 0.20 0.27 0.007 0.008 0.011 b 0.50 BASIC 0.020 BASIC e TOLERANCES OF FORM AND POSITION aaa 0.20 0.008 0.20 0.008 bbb 0.08 0.003 ccc ddd 0.08 0.003
Figure 7.1 - GL850A 48 Pin LQFP Package
(c)2000-2007 Genesys Logic Inc. - All rights reserved.
Page 27
GL850A USB 2.0 Low-Power HUB Controller
D D1 D2 D A A2 A1
48 49
33 32
A
E2 E1 E
InternalNo .
N : Normal package G : Green package
GL850A
B
AAAAAAAGAA YWWXXXXXXXX
Date Code Lot Code
17 1
e 4X b
Version No.
64
bbb H A B D
L1
16 4X
aaa C A B D
0.05 S
c
01 0
ddd M C A B s D s
C ccc C
SEATING PLANE
02 R1 H R2
0.25mm
GAGE PLANE
S
L
03 -
NOTES : 1. DIMENSIONS D1 AND E1 DO NOT INCLUDE MOLD PROTRUSION. ALLOWABLE PROTRUSION IS 0.25 mm PER SIDE. D1 AND E1 ARE MAXIMUM PLASTIC BODY SIZE DIMENSIONS INCLUDING MOLD MISMATCH. DIMENSION b DOES NOT INCLUDE DAMBAR 2. PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL NOT CAUSE THE LEAD WIDTH TO EXCEED THE MAXIMUM b DIMENSION BY MORE THAN 0.08mm. DAMBAR CAN NOT BE LOCATED ON THE LOWER RADIUS OR THE FOOT. MINIMUM SPACE BETWEEN PROTRUSION AND AN ADJACENT LEAD IS 0.07mm.
CONTROL DIMENSIONS ARE IN MILLIMETERS. MILLIMETER INCH SYMBOL MIN. NOM. MAX. MIN. NOM. MAX. 1.60 0.063 A 0.006 0.05 0.15 0.002 A1 1.35 1.40 1.45 0.053 0.055 0.057 A2 12.00 BASIC 0.472 BASIC D 12.00 BASIC 0.472 BASIC E 10.00 BASIC 0.393 BASIC D1 10.00 BASIC 0.393 BASIC E1 7.50 BASIC 0.295 BASIC D2 7.50 BASIC 0.295 BASIC E2 0.08 0.003 R1 0.08 0.20 0.003 0.008 R2 0 0 3.5 7 0 3.5 7 01 0 0 02 11 12 13 11 12 13 03 11 12 13 11 12 13 0.008 0.09 0.20 0.004 c 0.45 0.60 0.75 0.018 0.024 0.030 L 1.00 REF 0.039 REF L1 0.20 0.008 S 0.17 0.20 0.27 0.007 0.008 0.011 b 0.50 BASIC e 0.020 BASIC TOLERANCES OF FORM AND POSITION 0.20 0.008 aaa 0.20 0.008 bbb ccc 0.08 0.003 0.08 0.003 ddd
Figure 7.2 - GL850A 64 Pin LQFP Package
(c)2000-2007 Genesys Logic Inc. - All rights reserved.
Page 28
GL850A USB 2.0 Low-Power HUB Controller
CHAPTER 8 ORDERING INFORMATION
Table 8.1 - Ordering Information
Part Number
GL850A-MSNXX GL850A-MNNXX GL850A-MSGXX GL850A-MNGXX
Package
64-pin LQFP 48-pin LQFP 64-pin LQFP 48-pin LQFP
Normal/Green
Normal Package Normal Package Green Package Green Package
Version
XX XX XX XX
Status
Available Available Available Available
(c)2000-2007 Genesys Logic Inc. - All rights reserved.
Page 29

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