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USB20H04
4-Port USB 2.0 Hub
Controller
Datasheet
Product Features
General Features
OEM Selectable Features
Compliant with USB 2.0 Specification
Configure as a bus-powered or self-powered
Hub controller IC with four downstream ports Hi-Speed USB hub
Four transaction translators ensure maximum USB Configure port power switching and current
throughput sensing on an individual or ganged basis
Enables bus-powered Hi-Speed hub design Enable LED indicator support
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4-Port USB 2.0 Hub Controller Datasheet 80 ARKAY DRIVE, HAUPPAUGE, NY 11788 (631) 435-6000, FAX (631) 273-3123 Copyright © 2007 SMSC or its subsidiaries. All rights reserved. Circuit diagrams and other information relating to SMSC products are included as a means of illustrating typical applications. Consequently, complete information sufficient for construction purposes is not necessarily given. Although the information has been checked and is b
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4-Port USB 2.0 Controller Datasheet Table of Contents Chapter 1 General Description .............................................................................................................5 1.1 Applications .........................................................................................................................................5 1.2 OEM Selectable Features ................................................................................................................
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4-Port USB 2.0 Hub Controller Datasheet List of Figures Figure 2.1 - Block Diagram.............................................................................................................................................7 Figure 3.1– 64 Pin TQFP ...............................................................................................................................................8 Figure 8.1 - 2-Wire EEPROM Interface...........................................................
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4-Port USB 2.0 Controller Datasheet Chapter 1 General Description The USB20H04 four-port hub controller is fully compliant with the USB 2.0 Specification and does not require firmware development. When connected to a high-speed host, the four downstream facing ports can operate at low-speed (1.5Mb/s), full-speed (12Mb/s), or high-speed (480Mb/s). As required by the USB 2.0 Specification, the USB20H04 is fully backward compatible with legacy full-speed hosts. A dedicated Transaction Tra
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4-Port USB 2.0 Hub Controller Datasheet 1.2 OEM Selectable Features The 4-Port Hub supports several OEM selectable features: Operation as a bus-powered, self-powered or dynamic-powered hub. (When configured for dynamic operation, the controller automatically switches to bus-powered mode if a local power source is unavailable). Configure downstream facing port power switching on an individual or ganged basis. Configure downstream facing port over-current sensing on an individual
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4-Port USB 2.0 Controller Datasheet Chapter 2 Functional Block Diagram Pin To Upstream Upstream 24 MHz To EEPROM or Selectable V USB Data Crystal SMBus Master BUS Options SD SCK Internal Serial PLL Configuration Bus-Power Interface Upstream Select Detect/ PHY V Pulse BUS SIE Controller Repeater TT TT TT TT Port #1 #2 #3 #4 Controller Routing Logic Port #1 Port #4 Downstream OC Sense Downstream OC Sense PHY #1 Switch Driver PHY #4 Switch Driver LED Drivers LED Drivers Downstream OC Switch/
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4-Port USB 2.0 Hub Controller Datasheet Chapter 3 Pinout VDDA33 1 48 TEST_P3 USBDP0 CLKIN_EN 2 47 USBDM0 3 46 OCS1_N VSS 4 45 VBUS1_N USBDM1 5 44 OCS2_N USBDP1 6 43 VBUS2_N VDDA33 7 42 VDD18 USB20H04 USBDP2 VSS 8 41 USBDM2 OCS3_N 9 40 VSS 10 39 VBUS3_N USBDM3 11 38 OCS4_N USBDP3 12 VBUS4_N 37 VDDA33 13 CS/EESEL 36 USBDP4 14 SCK/SCL 35 USBDM4 34 SD/SDA 15 VSS 16 TEST_P2 33 Figure 3.1– 64 Pin TQFP Revision 1.63 (03-30-07) Page 8 SMSC USB20H04 DATASHEET NC VSS 17 64 NC
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4-Port USB 2.0 Controller Datasheet Chapter 4 Interface Signal Definition 4.1 Pin Descriptions Table 4.1 - System Interface Signals BUFFER ACTIVE NAME DESCRIPTION TYPE LEVEL RESET_N IS Low Chip Reset. The minimum active low pulse is 100ns. See section 8.4 for a complete description of operation following a reset. Self-power Detect. Detects availability of local self-power source: SELF_PWR I High 0: Self/local power source is NOT available (i.e., 4- Port Hub gets all power from
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4-Port USB 2.0 Hub Controller Datasheet Table 4.3 - USB I/O Signals BUFFER ACTIVE NAME DESCRIPTION TYPE LEVEL USBDP0 IO-U N/A Upstream USB Positive Data Pin. USBDM0 IO-U N/A Upstream USB Negative Data Pin. VBUSDET IO8 N/A Detects state of upstream V power. When designing a detachable BUS hub, this pin must be connected to the V power pin of the USB port BUS that is upstream of the hub. For self-powered applications with a permanently attached upstream host, this pin must b
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4-Port USB 2.0 Controller Datasheet Table 4.4 - Biasing and Clock Oscillator Signals BUFFER ACTIVE NAME DESCRIPTION TYPE LEVEL RBIAS I-R N/A External 1% bias resistor. Requires a 12KΩ resistor to ground. Used for setting HS transmit current level and on-chip termination impedance. XTAL1/CLKIN ICLKx N/A External crystal. 24MHz crystal or external clock input when a crystal is not used. Connect a 5M ohm resistor from this pin to XTAL2 when a crystal is used. XTAL2 OCLKx N/A Ex
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4-Port USB 2.0 Hub Controller Datasheet Chapter 5 Limiting Values Table 5.1 - Absolute Maximum Ratings (In accordance with the Absolute Maximum Rating system (IEC 60134) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 1.8V Supply Voltage VDD1.8 -0.5 2.5 V (VDD1.8 and VDDA1.8) 3.3V Supply Voltage VDD3.3 -0.5 4.0 V (VDD3.3 and VDDA3.3) Voltage on any I/O pin -0.3 5.5 V Voltage on XTAL1/CLKIN and -0.3 3.6 V XTAL2 Storage Temperature TSTG -40 +125 oC Table 5.2 - R
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4-Port USB 2.0 Controller Datasheet Chapter 6 Electrical Characteristics Table 6.1 - Electrical Characteristics: Supply Pins o o (V =1.74 to 2.0V; V =3.0 to 3.6V; V = 0V; T = 0 C to +70 C; unless otherwise specified.) DD1.8 DD3.3 SS A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Suspend State I Suspended 100 uA CC1.8SUS I Suspended 200 uA CC3.3SUS 1 Port I 1 downstream port active 100 mA CC1.8FS1 Low-Speed/Full-Speed I 55 mA CC3.3FS1 1 Port I 1 downstream port active 100
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4-Port USB 2.0 Hub Controller Datasheet PARAMETER SYMBOL COMMENTS MIN TYP MAX UNITS I, IPD, IPU Input Buffer Low Input Level V TTL Levels 0.8 V ILI High Input Level V TTL Levels 2.0 V IHI I V = 0 -10 +10 uA Low Input Leakage IL IN I V = V -10 +10 uA High Input Leakage IH IN DD3.3 ICLK Input Buffer Low Input Level V TTL Levels 0.8 V ILCK V TTL Levels 2.0 V High Input Level IHCK Hysteresis V 50 100 mV HYS
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4-Port USB 2.0 Controller Datasheet Table 6.4 - DC Electrical Characteristics: Analog I/O Pins (DP/DM) o o (VDD1.8 =1.74 to 2.0V; VDD3.3 =3.0 to 3.6V; VSS = 0V; TA = 0 C to +70 C; unless otherwise specified.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS FS FUNCTIONALITY Input levels Differential Receiver Input V | VI(DP) - VI(DM) | 0.2 V DIFS Sensitivity Differential Receiver V 0.8 2.5 V CMFS Common-Mode Voltage Single-Ended Receiver Low V 0.8 V ILSE Lev
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4-Port USB 2.0 Hub Controller Datasheet Chapter 7 Functional Overview Figure 2.1 shows the functional block diagram of the USB 2.0 Hub Controller. Each of the functions is described in detail below. 7.1 Bus-Power Detect The VBUSDET pin on the USB20H04 monitors the state of the upstream V signal and will not pull-up BUS the DP0 resistor if V is not active. If V goes from an active to an inactive state (not powered), the BUS BUS USB20H04 will remove power from the DP0 pull-up resist
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4-Port USB 2.0 Controller Datasheet 7.5 Serial Interface External configuration data is loaded via the serial interface. The serial interface appears as either an 2 SMBus slave, or an I C memory interface. 7.5.1 SMBus Slave The USB20H04 conforms to voltage, power, and timing specifications as set forth in the SMBus 1.0 Specification for Slave-Only devices. The SMBus interface shares the same pins as the EEPROM interface. If the SMB_SEL_N pin is configured to activate the SMBus interf
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4-Port USB 2.0 Hub Controller Datasheet 7.9 Transaction Translator (TT) The transaction translator supports full-speed and low-speed devices attached to downstream ports in the high-speed environment. To provide the highest level of performance, the USB20H04 Hub provides one Transaction Translator (TT) per port (defined as multiple-TT). 7.10 Port Controller The port controller provides status and control of individual downstream ports. Any port status change is reported to the hos
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4-Port USB 2.0 Controller Datasheet Each port’s indicator must be located in a position that obviously associates the indicator with the port. The color and state of the LED is used to provide status information to the user. Two different modes of operation are supported for the port indicators: automatic mode and manual mode. The USB20H04 defaults to automatic mode upon power-up. In automatic mode, the USB20H04 controls the color of the indicator LED as described in Table 7.1 - Automati
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4-Port USB 2.0 Hub Controller Datasheet Chapter 8 Implementation Notes The following sections consist of select functional explanations to aid in implementing the Hub Controller into a system. 8.1 Configuration Implementations The USB20H04 is normally configured by an external EEPROM connected directly to the serial interface. Typical circuit diagrams are shown below. For a more detailed discussion of the serial interface, including how to configure the USB20H04 using the SMBus m
