AU9254 A21 USB Hub Controller Technical Reference Manual
Revision 1.1
© 1997-2003 Alcor Micro Corp. All Rights Reserved
Copyright Notice Copyright 1997 - 2003 Alcor Micro Corp. All Rights Reserved.
Trademark Acknowledgements The company and product names mentioned in this document may be the trademarks or registered trademarks of their manufacturers. Disclaimer Alcor Micro Corp. reserves the right to change this product without notice. Alcor Micro Corp. makes no warranty for the use of its products and bears no responsibility for any errors that appear in this document. Specifications are subject to change without notice.
Contact Information: Web site: http://www.alcormicro.com/ Taiwan Alcor Micro Corp. 4F-1, No 200, Kang Chien Rd., Nei Hu, Taipei, Taiwan, R.O.C. Phone: 886-2-8751-1984 Fax: 886-2-2659-7723
San Clara Office 2901 Tasman Drive, Suite 206 Santa Clara, CA 95054 Phone: (408) 845-9300 Fax: (408) 845-9086
Los Angeles Office 9400 Seventh St., Bldg. A2 Rancho Cucamonga, CA 91730 Phone: (909) 989-3060 Fax: (909) 944-0464
Table of Contents 1.0 Introduction ...................................................................................................... 1 1.1. Description............................................................................................................. 1 1.2. Features ................................................................................................................. 1
2.0 Application Block Diagram ............................................................................. 3 3.0 Pin Assignment................................................................................................ 5 4.0 System Architecture and Reference Design................................................. 10 4.1. AU9254 Block Diagram......................................................................................... 10 4.2. Sample Schematics11 ............................................................................................. 11
5.0 Electrical Characteristics ................................................................................ 15 5.1. Absolute Maximum Ratings................................................................................... 15 5.2. Recommended Operating Conditions .................................................................... 15 5.3. General DC Characteristics.................................................................................... 15 5.4. DC Electrical Characteristics for 5 volts operation................................................ 16 5.5. DC Electrical Characteristics for 3.3 volts operation............................................. 16 5.6. Crystal Oscillator Circuit Setup for Characterization............................................. 17 5.7. USB Transceiver Characteristics ........................................................................... 17 5.8. ESD Test Results ................................................................................................... 22 5.9. Latch-Up Test Results............................................................................................ 23
6.0 Mechanical Information................................................................................... 25 6.1 Normal Size Package (Body Size 209 mil)………………………………………..25 6.2 Small Size Package (Body Size 150 mil)…………………………………………27
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TABLE OF CONTENTS
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1.0 Introduction 1.1. Description The AU9254A21 is an integrated single chip USB hub controller designed for the emerging industry-standard Universal Serial Bus (USB). The AU9254A21 supports four USB downstream ports. Each downstream port has power switch control, and over-current sensing. Single chip integration makes the AU9254A21 the most cost effective stand-alone USB hub solution available in the market. Downstream ports can be used to connect various USB peripheral devices, such as USB printers, modems, scanners, cameras, mice, or joysticks to the system without adding external glue logic.
1.2. Features • • • • • • •
Fully compliant with the Universal Serial Bus Specification, version 1.1. USB hub design is compliant with Universal Serial Bus Hub Specification, revision 1.1. Single chip integrated USB hub controller with embedded proprietary processor. Supports four bus-powered/self-powered downstream ports. Built-in 3.3v voltage regulator allows single +5V operating voltage, resulting in reduced overall system cost. Runs at 12Mhz frequency. 28-pin SSOP package, both normal size (body size 209 mil) and smaller size (body size 150 mil) are available.
INTRODUCTION
1
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INTRODUCTION
2
2.0 Application Block Diagram The AU9254A21 is a single chip 4-port USB hub controller. The upstream port is connected to the USB system. The downstream ports can be used for a mouse, joystick, scanner, printer or other device.
USB HOST SYSTEM
PRINTER
SCANNER
ALCOR MICRO AU9254
USB DOWNSTREAM PORTS
USB DOWNSTREAM PORTS MOUSE Keyboard
APPLICATION BLOCK DIAGRAM
3
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APPLICATION BLOCK DIAGRAM
4
3.0 Pin Assignment The AU9254A21 is packaged as a 28-pin shrink small outline plastic package (SSOP). The figure on the following page shows the signal names for each of the pins on the chip. Accompanying the figure is the table that describes each of the pin signals.
USB2_DM
1
28
USB1_DP
USB2_DP
2
27
USB1_DM
USB3_DM
3
26
USB_DP
USB3_DP
4
25
USB_DM
USB4_DM
5
24
DP3_OVRCUR
USB4_DP
6
23
DP4_OVRCUR
DP4_PWRUP
7
22
DP3_PWRUP
DP2_PWRUP
8
21
XTAL2
BUS_PWRED
9
20
XTAL1
VCC5O/VCC5IK
10
19
AGND/GNDO
GND5O/GND5IK
11
18
NC
VCC3V
12
17
DP2_OVRCUR
DP1_PWRUP
13
16
SUSPEND
GANGPOWER
14
15
DP1_OVRCUR
ALCOR MICRO AU9254 A21 USB HUB CONTROLLER 28 - PIN SSOP
APPLICATION BLOCK DIAGRAM
5
Table 3-1. Pin Descriptions of Au9254A21, 28-pin SSOP Pin No
Pin Name
Input/Output
Description
1
USB_DM
Input/Output
USB D- for downstream port 2; add 15KΩ pull-down to ground.
2
USB2_DP
Input/Output
USB D+ for downstream port 2; add 15KΩ pulldown to ground.
3
USB3_DM
Input/Output
USB D- for downstream port 3; add 15KΩ pull-down to ground.
4
USB3_DP
Input/Output
USB D+ for downstream port 3; add 15KΩ pulldown to ground.
5
USB4_DM
Input/Output
USB D- for downstream port 4; add 15KΩ pull-down to ground.
6
USB4_DP
Input/Output
USB D+ for downstream port 4; add 15KΩ pulldown to ground.
7
DP4_PWRUP
Output
Downstream port 4 power switch control. Active low.
8
DP2_PWRUP
Output
Downstream port 2 power switch control. Active low.
9
BUS_PWRED
Input
Bus power. Low indicates bus-powered.
10
VCC5O/VCC5IK
Power
+5 V power supply.
11
GND5O/GND5IK
Power
Ground.
12
VCC3V
Power
3.3V output for upstream D+ pull-up.
13
DP1_PWRUP
Output
Downstream port 1 power switch control. Active low.
14
GANGPOWER
Input
Ganged or individual port power selection. Add a 10k pull down for ganged power. 10k pull up for individual power.
15
DP1_OVRCUR
Input
Downstream port 1 over-current indicator. Active low.
SYSTEM ARCHITECTURE AND REFERENCE DESIGN
6
16
SUSPEND
17
DP2_OVRCUR
18
NC
19
Output
Device is in suspended state: Active high.
Input
Downstream port 2 over-current indicator. Active low.
AGND/GNDO
Power
+5 V power supply.
20
XTAL_1
Input
Crystal in.
21
XTAL_2
Output
Crystal out.
22
DP3_PWRUP
Output
Downstream port 3 power switch control. Active low.
23
DP4_OVRCUR
Input
Downstream port 4 over-current indicator. Active low.
24
DP3_OVRCUR
Input
Downstream port 3 over-current indicator. Active low.
25
USB_DM
Input/Output
USB D- for upstream.
26
USB_DP
Input/Output
USB D+ for upstream port. Need external 1.5KΩ pull-up to 3.3V.
27
USB1_DM
Input/Output
USB D- for downstream port 1; add 15KΩ pull-down to ground.
28
USB1_DP
Input/Output
USB D+ for downstream port 1; add 15KΩ pulldown to ground.
SYSTEM ARCHITECTURE AND REFERENCE DESIGN
7
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SYSTEM ARCHITECTURE AND REFERENCE DESIGN
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4.0 System Architecture and Reference Design 4.1. AU9254A21 Block Diagram
ROOT PORT
XCVR
SUSPEND, COMMAND RESUME AND PROCESSOR FRAME TIMER
USB SIE
DESC. ROM HUB REPEATER PORT CONTROL
3.3V
3.3V VOLTAGE REGULATOR
4X PLL
12 MHz
.....
XCVR
PORT 1
PORT CONTROL
XCVR
.....
PORT 4
SYSTEM ARCHITECTURE AND REFERENCE DESIGN
9
4.2 Sample Schematics
R1 1.5K
VCC
C1 U1 39 39 39 39 39 39
R2 R4 R6 R8 R10 R11
DM2 DP2 DM3 DP3 DM4 DP4 VCC C3
R12 1K
C4
VCC3 10UF
0.1UF
1 2 3 4 5 6 7 8 9 10 11 12 13 14
USB2_DM USB2_DP USB3_DM USB3_DP USB4_DM USB4_DP DP4_PWRUP DP2_PWRUP BUS_PWRED VCC50/VCC5IK GND5O/GND5I VCC3V DP1_PWRUP GANGPOWER
USB1_DP USB1_DM USB_DP USB_DM DP3_OVRCUR DP4_OVRCUR DP3_PWRUP XTAL2 XTAL1 AGND/GND0 Empty Pin DP2_OVRCUR SUSPEND DP1_OVRCUR
28 R3 27 R5 26 25 24 23 22 21 20 19 18 17 16 15
CON1
VCC3 1 2 3 4 5 6
C2
0.1UF 1UF
39 39 R7 R9
DP1 39DM1
PW DATADATA+ GND FGND1 FGND2 USB-B
39
XTAL2 XTAL1
SUSPEND
R13 AU9254A21 10k
VCC
VCC
VCC
F1
VCC
F2 MINSMDC110
MINSMDC110
USB_VCC1
VCC
F3
F4
MINSMDC110
USB_VCC2
MINSMDC110
USB_VCC3
USB_VCC4
C6
C7
C8
C9
150UF
150UF
150UF
150UF
C10 R14 39PF C11
R15 1M
39 XTAL1
Y1 12MHZ R16
39 XTAL2
Title
ALCOR MICRO AU9254A21 USB 4 PORT HUB Reference Design 39PF
Size A Date:
Document Number
Rev A
ALCOR MICRO AU9254 DEMO BOARD Wednesday , December 20, 2000 Sheet
1
of
2
Disclaimer: This schematic is for reference only. Alcor Micro Corp. bears no responsibility for any error that appear in this document. Specifications are subject to change without notice.
SYSTEM ARCHITECTURE AND REFERENCE DESIGN
10
CON2
USB_VCC2
DM1 USB_GND2 USB_GND1
DP1
Q2
2
SUSPEND
1
15K 15K 15K 15K PWR-2USB
1 10K
1N9012
1N9012
3
3
10K
Q1
DP2
2
R20
R19
DP2 DP1 DM2 DM1 USB_VCC2 USB_VCC1
DM2
R25 R26 R27 R28
R17 680
R18 680
SUSPEND
DM1 DP1 DM2 DP2
Up
D1 LED
D2 LED
Down
USB_VCC1
CON3
USB_GND4 USB_GND3 DP4
USB_VCC4 DM3
DP3
DP3 D4 LED
Q3
SUSPEND
1
1 10K
1N9012 3
10K
Q4
PWR-2USB
1N9012 3
SUSPEND
R24
DP4
R29 R30 R31 R32 15K 15K 15K 15K
R22 680
2
R23
DM4 DM3 USB_VCC4 USB_VCC3
DM4
2
R21 680
DM3 DP3 DM4 DP4
Up
D3 LED
Down
USB_VCC3
Title
ALCOR MICRO AU9254A21 USB 4 PORT HUB Reference Design Size A Date:
Document Number
Rev A
ALCOR MICRO AU9254 DEMO BOARD Wednesday, December 20, 2000 Sheet
2
of
2
Disclaimer: This schematic is for reference only. Alcor Micro Corp. bears no responsibility for any error that appear in this document. Specifications are subject to change without notice.
SYSTEM ARCHITECTURE AND REFERENCE DESIGN
11
VCC_UP F1 FB U1 39 39 39 39 39 39
R1 R3 R5 R8 R10 R11
DM2 DP2 DM3 DP3 DM4 DP4
1 2 3 4 5 6 7 8 9 1K 10 11 12 13 14
DP4_PWR DP2_PWR
VCC
R12 C4 0.1UF
C5 0.1UF
USB2_DM USB2_DP USB3_DM USB3_DP USB4_DM USB4_DP DP4_PWRUP DP2_PWRUP BUS_PWRED VCC50/VCC5IK GND5O/GND5I VCC3V DP1_PWRUP GANGPOWER
USB1_DP USB1_DM USB_DP USB_DM DP3_OVRCUR DP4_OVRCUR DP3_PWRUP XTAL2 XTAL1 AGND/GND0 EMPTY PIN DP2_OVRCUR SUSPEND DP1_OVRCUR
39 39
28 R2 27 R4 26 25 24 23 22 21 20 19 18 17 16 15
R6 R9
DP1 39DM1 39
R7
VCC3 C3
1.5K
DP3_OVRCUR DP4_OVRCUR DP3_PWR XTAL2 XTAL1
C1 C2
CON1 1 2 3 4 5 6
PW DATADATA+ GND FGND1 FGND2
47P 47P USB-B
1UF
DP2_OVRCUR SUSPEND DP1_OVRCUR
R13 AU9254A21 10k
VCC_UP D1 1N4001 K1 D P1_PW R
C7 C8 0.1UF
10UF
VCC
D2
RELAY SPDT
C9
J1
R14 33 XTAL2
VCC3
1N4148
39PF C10
U2 1 2
EN IN
OUT ADJ
G
1 3 2
C13
5
R18 56K
C11
C12
D5 LED
1M
USB_VCC1
USB_VCC2
D4 LED
D3 LED
Y1 12MHZ R16 33 XTAL1
39PF
100UF 0.1UF
3
Power Jack
R17 1K
4
R15
10UF R20 680
D7 LED
D8 LED
Q3
SUSPEND
1 1N9012
Disclaimer: This schematic is for reference only. Alcor Micro Corp. makes no warranty for the use of its products and bears no responsibility for any error that appear in this document. Specifications are subject to change without notice.
Q4
R26 680 R29
SUSPEND
1 10K
3
10K
1N9012
Q5 1
10K 3
SUSPEND
R28
2
R27
R25 680 2
R24 680
1N9012
2
D6 LED
1N9012
3
USB_VCC4
Q1 1
10K 3
USB_VCC3
R22
SUSPEND
1N9012 3
VCC_UP
Q2 1
10K
2
R23
SUSPEND
R19 680
2
R21 18K
Title Alcor Micro Au9254A21 USB 4 Port Hub Reference Design Size A4 Date:
Document Number
Rev A
Au9254A21 USB Hub Buspower and Selfpower Changed Thursday, September 13, 2001
Sheet
SYSTEM ARCHITECTURE AND REFERENCE DESIGN
1
of
2
12
CON2
DM1 DP1
VCC
U3
C16 0.1UF
R30 1K
DP1_PWR USB_VCC1 USB_VCC3 DP3_PWR R31 1K
1 2 3 4 5 6 7 8
FLGA# ENA# OUTA GND IN_CD OUTC ENC# FLGC#
FLGB# ENB# OUTB IN_AB GND1 OUTD END# FLGD#
16 15 14 13 12 11 10 9
DP2_PWR USB_VCC2
DM2
C14
DP2
47P
C15 47P
VCC DATADATA+ GND FGND1 FGND2 USB-A
USB_VCC4 DP4_PWR
0.1UF
R32
R33
1K
1K
R34 R35 R36 R37 15K 15K 15K 15K
CON3 USB_VCC2
DM2 DP2
0.1UF C19
C21 0.1UF
1 2 3 4 5 6
C17
2527 or compatible
C18 0.1UF
DM1 DP1 DM2 DP2
VCC
USB_VCC1
DM1 DP1
0.1UF
C20
C22
C23
47P
47P
1 2 3 4 5 6
VCC DATADATA+ GND FGND1 FGND2
D P1_O VR C U R D P3_O VR C U R
D P4_O VR C U R D P2_O VR C U R
USB-A
CON4 USB_VCC3
DM3 DP3
DM3 DP3 DM3 DP3 DM4 DP4
DM4
C24
C25
47P
47P
1 2 3 4 5 6
USB-A
DP4
R38 R39 R40 R41 15K 15K 15K 15K
Disclaimer: This schematic is for reference only. Alcor Micro Corp. makes no warranty for the use of its products and bears no responsibility for any error that appear in this document. Specifications are subject to change without notice.
VCC DATADATA+ GND FGND1 FGND2
CON5 USB_VCC4
DM4 DP4 C26
C27
47P
47P
1 2 3 4 5 6
VCC DATADATA+ GND FGND1 FGND2 USB-A
USB_VCC1
USB_VCC2
USB_VCC3
USB_VCC4
C28
C29
C30
C31
120UF
120UF
120UF
120UF Title Alcor Micro Au9254A21 USB 4 Port Hub Reference Design Size A4 Date:
Document Number Au9254A21 USB Hub Buspower Selfpower Changed Thursday, September 13, 2001
Sheet
2
SYSTEM ARCHITECTURE AND REFERENCE DESIGN
of
Rev A 2
13
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SYSTEM ARCHITECTURE AND REFERENCE DESIGN
14
5.0 Electrical Characteristics 5.1. Absolute Maximum Ratings SYMBOL VCC VIN VOUT TSTG
PARAMETER Power Supply Input Voltage Output Voltage Storage Temperature
RATING -0.3 to 6.0 -0.3 to VCC+0.3 -0.3 to VCC+0.3 -40 to 125
UNITS V V V ˚
C
5.2. Recommended Operating Conditions SYMBOL VCC VIN TOPR
PARAMETER Power Supply Input Voltage Operating Temperature
MIN 4.5 0 -5
TYP 5.0
MAX 5.5 VCC 85
UNITS V V O C
5.3. General DC Characteristics SYMBOL IIL IIH IOZ CIN COUT CBID
PARAMETER Input low current Input high current Tri-state leakage current Input capacitance Output capacitance Bi-directional buffer capacitance
CONDITIONS no pull-up or pull-down no pull-up or pull-down
MIN -1 -1 -10
TYP
MAX 1 1 10
4 4 4
ELECTRICAL CHARACTERISTICS
UNITS µA µA µA ρF ρF ρF
15
5.4.
DC Electrical Characteristics for 5 volts operation
( Under Recommended Operating Conditions and VCC=4.5v ~ 5.5v , Tj= -40OC to SYMBOL PARAMETER CONDITIONS MIN VIL Input Low Voltage TTL VIL Input Low Voltage CMOS VIL Schmitt input Low Voltage TTL VIL Schmitt input Low V oltage CMOS VIH Input High Voltage TTL 2.2 VIH Input Hight Voltage CMOS 0.7*VCC VIH Schmitt input High Voltage TTL VIH Schmitt input High Voltage CMOS VOL Output low voltage IOL=2, 4, 8, 12, 16, 24 mA VOH Output high voltage IOH=2, 4, 8, 12, 16, 24 mA 3.5 RI Input Pull-up/down resistance Vil=0V or Vih=VCC
+ 85OC ) TYP MAX UNITS 0.8 V 0.3*VCC V 1.10 V 1.84 V V V 1.87 V 3.22 V 0.4 V V 50 KΩ
5.5. DC Electrical Characteristics for 3.3 volts operation ( Under Recommended Operating Conditions and VCC=3.0v ~ 3.6v , Tj = -40OC to +85OC ) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VIL Input Low Voltage CMOS 0.3*VCC V VIL Schmitt input Low Voltage CMOS 1.22 V VIH Input Hight Voltage CMOS 0.7*VCC V VIH Schmitt input High Voltage CMOS 2.08 V VOL Output low voltage IOL=2, 4, 8, 12, 16, 24 mA 0.4 V VOH Output high voltage IOH=2, 4, 8, 12, 16, 24 mA 2.3 V RI Input Pull-up/down resistance Vil=0V or Vih=VCC 75 KΩ
ELECTRICAL CHARACTERISTICS
16
5.6. Crystal Oscillator Circuit Setup for Characterization The following setup was used to measure the open loop voltage gain for crystal oscillator circuits. The feedback resistor serves to bias the circuit at its quiescent operating point and the AC coupling capacitor, Cs, is much larger than C1 and C2.
5.7. USB Transceiver Characteristics RECOMMENDED OPERATING CONDITIONS SYMBOL VCC VI VI/O VO TAMB
PARAMETER DC supply voltage DC input voltage range DC input range for I/Os DC output voltage range Operating ambient temperature range in free air
CONDITIONS
See DC and AC characteristics for individual device
LIMITS MIN MAX 3.0 3.6 0 5.5 0 VCC 0 VCC 0 70
UNIT V V V V ˚ C
ELECTRICAL CHARACTERISTICS
17
ABSOLUTE MAXIMUM RATINGS (Notes 1 and 2) In accordance with the Absolute Maximum Rating System, Voltages are referenced to GND (Ground=0v)
VCC IIK VI VI/O
DC supply voltage DC input diode current DC input voltage DC input voltage range for I/Os
Vi Vcc or Vo
