EVB-USB2524 SMSC, EVB-USB2524 Datasheet

BOARD EVAL USB2524 SHARE/SWITCH

EVB-USB2524

Manufacturer Part Number
EVB-USB2524
Description
BOARD EVAL USB2524 SHARE/SWITCH
Manufacturer
SMSC
Series
MultiSwitch™r
Datasheets

Specifications of EVB-USB2524

Main Purpose
Interface, USB 2.0 Hub
Embedded
No
Utilized Ic / Part
USB2524
Primary Attributes
Quad Port Hub, High Speed (480Mbps), SMBus
Secondary Attributes
Overcurrent Protection, Port Power Switching, Multi-TT Enabled
Interface Type
USB
Operating Supply Voltage
5 V
Product
Interface Modules
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With/related Products
USB2524
Other names
638-1044

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
EVB-USB2524
Manufacturer:
SMSC
Quantity:
135
PRODUCT FEATURES
SMSC USB2524
USB 2.0 Compatible 4-Port Hub with two upstream
Downstream ports can be disabled or defined as non-
Switching hub can be configured as compound
Multiple LED modes for maximum implementation
host port connections
— Provides electronic reconfiguration and re-assignment
— Allows multiple USB hosts to share peripherals and
— Each host has a dedicated Single Transaction
removable
device for support of ‘embedded’ USB peripherals
flexibility
— USB Mode - 2 Single-color LEDs for each downstream
— Host Ownership Mode - 8 Single-Color LEDs indicate
— Host Ownership & Port Speed Mode - 8 Dual-Color
of any of its 4 downstream ports to either of two
upstream host ports (“on-the-fly”).
enables a user to dynamically assign host ownership.
Translator (Single-TT) for supporting FS/LS devices, or
can also operate in Multi-TT mode where each
downstream port has a dedicated Transaction
Translator.
port (total of 8 LEDs).
which upstream host each of the downstream ports are
assigned to.
LEDs are used to indicate which upstream host each of
the downstream ports are assigned to, while
simultaneously indicating downstream port connection
speed.
– Embedded Mode - 8 (predefined, OEM
– Peripheral Mode - Dedicated select pin for
programmable) configurations for port
assignment are selectable via three external
control signals.
every downstream port (total of 4), selectable
edge or level triggered in order to support a
wide range of possible switch configurations
and styles.
DATASHEET
Enhanced configuration options available through
Hardware Strapping options allow for configuration
Complete USB Specification 2.0 Compatibility
On-Board 24MHz Crystal Driver Circuit or 24 MHz
Internal PLL for 480MHz USB 2.0 Sampling
Internal 1.8V Linear Voltage Regulator
Integrated USB termination and Pull-up/Pull-down
Internal Short Circuit protection of USB differential
1.8 Volt Low Power Core Operation
3.3 Volt I/O with 5V Input Tolerance
56-Pin QFN Lead-free RoHS Compliant Package
either a Single Serial I
Port
— VID/PID/DID
— Port Configuration
— String Descriptors (each can support a maximum length
— Assignment of downstream ports to upstream hosts
— Switching mechanism selection
without an external EEPROM or SMBus Host
— Default VID/PID/DID, allows functionality when
— Includes USB 2.0 Hi-Speed Transceivers
— High-Speed (480Mbits/s), Full-Speed (12Mbits/s) and
— Full power management with choice of Individual or
external clock driver
resistors
signal pins
USB MultiSwitch
USB2524
of 31 characters)
configuration EEPROM is absent
Low-Speed (1.5Mbits/s) compatible
Ganged power control
– Custom Manufacturer String
– Custom Product String
– Custom Serial String
2
C EEPROM, or SMBus Slave
Revision 1.91 (08-22-07)
TM
Datasheet
Hub

Related parts for EVB-USB2524

EVB-USB2524 Summary of contents

Page 1

... Host Ownership & Port Speed Mode - 8 Dual-Color LEDs are used to indicate which upstream host each of the downstream ports are assigned to, while simultaneously indicating downstream port connection speed. SMSC USB2524 USB2524 USB MultiSwitch Enhanced configuration options available through either a Single Serial I Port — ...

Page 2

... Any and all such uses without prior written approval of an Officer of SMSC and further testing and/or modification will be fully at the risk of the customer. Copies of this document or other SMSC literature, as well as the Terms of Sale Agreement, may be obtained by visiting SMSC’ ...

Page 3

... Register 16h-53h: Manufacturer String (Reset = 0x00 7.1.4.24 Register 54h-91h: Product String (Reset = 0x00 7.1.4.25 Register 92h-CFh: Serial String (Reset = 0x00 7.1.4.26 Register D0h: Port Interface Delay Timer (Reset = 0x00 7.1.4.27 Register D1h: Port Assign Interface Configuration 0A (Reset = 0x00 SMSC USB2524 3 DATASHEET Revision 1.91 (08-22-07) ...

Page 4

... General Call Address Response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 7.3.4 Slave Device Time-Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 7.3.5 Stretching the SCLK Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 7.3.6 SMBus Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 7.3.7 Bus Reset Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 7.3.8 SMBus Alert Response Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 7.3.8.1 Undefined Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 7.3.8.2 Reserved Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 Revision 1.91 (08-22-07) 4 DATASHEET TM USB MultiSwitch Hub Datasheet SMSC USB2524 ...

Page 5

... RESET_N for SMBus Slave Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 9.1.2 USB Bus Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 Chapter 10 XNOR Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 Chapter 11 DC Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 11.1 Maximum Guaranteed Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 11.1.1 DC Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 Chapter 12 AC Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 12.1 Oscillator/Clock 12.1.1 SMBus Interface 12.1.2 I2C EEPROM 12.1.3 USB 2 Chapter 13 Package Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 SMSC USB2524 5 DATASHEET Revision 1.91 (08-22-07) ...

Page 6

... Figure 9.1 Reset_N Timing for Default/Strap Option Mode Figure 9.2 Reset_N Timing for EEPROM Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 Figure 9.3 Reset_N Timing for SMBus Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 Figure 13.1 USB2524 56-Pin QFN Package Outline and Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 Revision 1.91 (08-22-07) 6 DATASHEET TM USB MultiSwitch Hub Datasheet SMSC USB2524 ...

Page 7

... Table 7.1 Internal EEPROM & SMBus Register Memory Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Table 9.1 Reset_N Timing for Default/Strap Option Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 Table 9.2 Reset_N Timing for EEPROM Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 Table 9.3 Reset_N Timing for SMBus Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 Table 11.1 DC Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 SMSC USB2524 7 DATASHEET Revision 1.91 (08-22-07) ...

Page 8

... SMBus host to have full access to re-assign ports on an as-needed basis. The SMSC 4-Port Switching Hub is fully compliant with the USB 2.0 Specification and will attach to either or both upstream USB hosts as a Full-Speed Hub Full-/High-Speed Hub. The 4 downstream Hub ports support Low-Speed, Full-Speed, and High-Speed (if operating as a High-Speed Hub) downstream devices on all of the enabled downstream ports ...

Page 9

... Microcontroller’s GPIO pins. Enablement of String Descriptor Support, along with the capability to customize each of the 3 different string descriptors ( maximum size of 31 characters each) Selection of LED Mode: USB Mode, Host Ownership Mode, or Host Ownership Mode with Speed Indication. SMSC USB2524 9 DATASHEET Revision 1.91 (08-22-07) ...

Page 10

... RBIAS PRT_ASSIGN2 USBDN_DP4 PRTPWR4 OCS4_N SERIAL PORT INTERFACE (4 PINS) CFG_SEL1 CFG_SEL0 MISC (5 PINS) XTAL2 RESET_N ANALOG POWER & GROUND (5 PINS) VDDA33(4) VDDCR18(2) NC TOTAL (56 PINS) 10 DATASHEET TM USB MultiSwitch Hub Datasheet USBUP_DM2 OCS1_N OCS2_N OCS3_N PRT_ASSIGN0 PRTPWR_POL LED_A4_N/PRT_DIS1 PRT_ASSIGN3 CFG_SEL2 SELF_PWR SMSC USB2524 ...

Page 11

... Chapter 3 Pin Configuration LED_B4_N 43 RESET_N 44 VBUS_DET1 45 VBUS_DET2 46 VDDA33 47 USBUP_DP2 48 USBUP_DM2 49 VDDCR18 50 XTAL2 51 XTAL1/CLKIN 52 VDDPLL18 53 VDD33 RBIAS 56 SMSC USB2524 SMSC USB2524 (Top View QFN-56) thermal slug connects to VSS Figure 3.1 USB2524 QFN-56 11 DATASHEET 28 LED_A2_N/NON_REM1 27 PRTPWR1 26 OCS1_N 25 OCS2_N 24 PRTPWR2 23 PRTPWR3 22 OCS3_N 21 OCS4_N 20 PRTPWR4 19 PRTPWR_POL 18 ...

Page 12

... UPSTREAM USB 2.0 INTERFACE IO-U These pins connect to the upstream USB bus data signals. I/O Detects state of Upstream VBUS power. The SMSC Hub monitors VBUS_DET to determine when to assert the internal D+ pull-up resistor (signalling a connect event). When designing a detachable hub, this pin must be connected to the VBUS power pin of the USB port that is upstream of the hub ...

Page 13

... Polarity strapping Over Current OCS[4:1]_N Sense USB Transceiver RBIAS Bias SMSC USB2524 TYPE FUNCTION I/O12 Green indicator LED for ports 2 and 1. Will be active low when LED support is enabled via EEPROM or SMBus. If the hub is configured by the internal default configuration, these pins will be sampled at RESET_N negation to determine if ports [3:1] contain permanently attached (non- removable) devices ...

Page 14

... Strap options on pins LED_A[4:1]_N are enabled. No support for unassigned Ports. LED Mode = USB Mode 1 2-wire (I2C) EEPROMS are supported, LED Mode = See Chapter 8, LED Interface Description 14 DATASHEET TM USB MultiSwitch Hub Datasheet FUNCTION Chapter 6, Assigning Ports for Table 4.2. Table 4.2. Table 4.2. FUNCTION SMSC USB2524 ...

Page 15

... TEST Pin TEST Table 4.4 Power, Ground, and No Connect NAME SYMBOL VDD Core VDDCR18 VDDIO 3.3V VDD33 SMSC USB2524 NAME 0 Internal Default Configuration PRT_ASSIGN[3:0] = Peripheral Mode (Edge Triggered) LED Mode = Host Ownership Mode Strap options on pins LED_A[4:1]_N are enabled. Supports unassigned Ports ...

Page 16

... Filtered analog power for internal PLL. This pin must have a 4.7 Ω) <0.1 capacitor to VSS +3.3V Filtered analog PHY power, shared between adjacent ports. Ground No Connect Table 4.5 Buffer Type Descriptions DESCRIPTION 16 DATASHEET TM USB MultiSwitch Hub Datasheet FUNCTION μ F (or greater) ±20% (ESR SMSC USB2524 ...

Page 17

Chapter 5 Switching Hub Block Diagram tre tre a m ...

Page 18

... H2 = The USB host or hub that is connected to upstream port #2 Note 6 Un-Assigned Revision 1.91 (08-22-07) Table 6.1, "USB2524 Port Assign Interface (Embedded PRT_ASSIGN CONFIG DATASHEET TM USB MultiSwitch Hub Datasheet Mode)". INTERNAL DEFAULT CONFIGURATION HOST OWNERSHIP OF DOWNSTREAM PORTS PORT PORT PORT PORT SMSC USB2524 ...

Page 19

... In this mode, the SMBus interface remains “live” during operation of the switching hub and is used to switch/assign ports “on-the-fly” through SMBus commands. This is accomplished through register direct writes to the Port Assignment registers (see the USB_ATTACH description under Status/Command (Reset = 0x00) on page SMSC USB2524 Register D0h: Port Interface Delay Timer (Reset = 39). 19 ...

Page 20

... Switching Hub Configuration Options The SMSC Hub supports a large number of features (some are mutually exclusive), and must be configured in order to correctly function when attached to a USB host controller. There are three principal ways to configure the hub: SMBus, EEPROM internal default settings (with or without pin strapping option over-rides) ...

Page 21

... R/W F3h R/W F4h R/W F5h R/W F6h-FEh R/W FFh R/W SMSC USB2524 REGISTER NAME Port Disable (Self) Port Disable (Bus) Max Power (Self) Max Power (Bus) Hub Controller Max Current (Self) Hub Controller Max Current (bus) Power-on Time LANG_ID_H LANG_ID_L ...

Page 22

... BCD format (assigned by OEM). This field is set by the OEM using either the SMBus or EEPROM interface options. DESCRIPTION Most Significant Byte of the Device ID. This is a 16-bit device release number in BCD format (assigned by OEM). This field is set by the OEM using either the SMBus or EEPROM interface options. 22 DATASHEET TM USB MultiSwitch Hub Datasheet SMSC USB2524 ...

Page 23

... When configured as a Bus-Powered device, the SMSC Hub consumes less than 100mA of current prior to being configured. After configuration, the Bus- Powered SMSC Hub (along with all associated hub circuitry, any embedded devices if part of a compound device, and 100mA per externally available downstream port) must consume no more than 500mA of upstream VBUS current ...

Page 24

... Port Assign Interface is configured for Direct Port Control. (4-Wire), edge Sensitive, and Unassigned state is not supported. ‘11’ = Port Assign Interface is configured for Direct Port Control. (4-Wire), edge Sensitive, and the Unassigned state is supported. 24 DATASHEET TM USB MultiSwitch Hub Datasheet SMSC USB2524 ...

Page 25

... STRING_EN 7.1.4.10 Register 09h: Non-Removable Device (Reset = 0x00) BIT NUMBER BIT NAME 7:0 NR_DEVICE SMSC USB2524 DESCRIPTION ‘0’ = Port assignment is controlled by hardware interface pins ‘1’ = Port assignment is controlled by: PORT_ASSIGN_12 PORT_ASSIGN_34 PORT_ASSIGN_56 PORT_ASSIGN_7 Reserved, always = ‘0’. LED Mode Selection: The LED_A[4:1]_N and LED_B[4:1]_N pins support several different modes of operation (depending upon OEM implementation of the LED circuit) ...

Page 26

... VBUS) of all associated circuitry on the board. This value also includes the power consumption of a permanently attached peripheral if the hub is configured as a compound device, and the embedded peripheral reports 0mA in its descriptors. Note: The USB 2.0 Specification does not permit this value to exceed 100mA 26 DATASHEET TM USB MultiSwitch Hub Datasheet SMSC USB2524 ...

Page 27

... BIT NUMBER BIT NAME 7:0 LANG_ID_L SMSC USB2524 DESCRIPTION Max Power Bus_Powered: Value in 2mA increments that the Hub consumes from an upstream port (VBUS) when operating as a bus-powered hub. This value includes the hub silicon along with the combined power consumption (from VBUS) of all associated circuitry on the board. This value also includes ...

Page 28

... LSB, MSB manner). Some EEPROM programmers may transpose the MSB and LSB, thus reversing the Byte order. Please pay careful attention to the Byte ordering or your selected programming tools. 28 DATASHEET TM USB MultiSwitch Hub Datasheet SMSC USB2524 ...

Page 29

... Register D1h: Port Assign Interface Configuration 0A (Reset = 0x00) BIT NUMBER BIT NAME 7:0 PORT_INT_0A SMSC USB2524 DESCRIPTION Serial String, UNICODE UTF-16LE per USB 2.0 Specification Maximum string length is 31 characters (62 Bytes) Note: The String consists of individual 16 Bit UNICODE UTF-16LE characters. The Characters will be stored starting with the LSB at the ...

Page 30

... Reserved, will default to ‘0001’ value to ‘1111’ Bit [3:0] = ‘0000’ Port 1 is unassigned ‘0001’ Port 1 owned by UP1 ‘0010’ Port 1 owned by UP2 ‘0011’ Reserved, will default to ‘0001’ value to ‘1111’ 30 DATASHEET TM USB MultiSwitch Hub Datasheet SMSC USB2524 ...

Page 31

... Register D9h: Port Assign Interface Configuration 2A (Reset = 0x00) BIT NUMBER BIT NAME 7:0 PORT_INT_2A SMSC USB2524 DESCRIPTION Port Assign Interface 1B: Determines the configuration of the hardware interface configuration for the assignment of ports 3 & upstream hosts. Bit [7:4] = ‘0000’ Port 4 is unassigned ‘0001’ Port 4 owned by UP1 ‘ ...

Page 32

... Reserved, will default to ‘0001’ value to ‘1111’ Bit [3:0] = ‘0000’ Port 1 is unassigned ‘0001’ Port 1 owned by UP1 ‘0010’ Port 1 owned by UP2 ‘0011’ Reserved, will default to ‘0001’ value to ‘1111’ 32 DATASHEET TM USB MultiSwitch Hub Datasheet SMSC USB2524 ...

Page 33

... Register E1h: Port Assign Interface Configuration 4A (Reset = 0x00) BIT NUMBER BIT NAME 7:0 PORT_INT_4A SMSC USB2524 DESCRIPTION Port Assign Interface 3B: Determines the configuration of the hardware interface configuration for the assignment of ports 3 & upstream hosts. Bit [7:4] = ‘0000’ Port 4 is unassigned ‘0001’ Port 4 owned by UP1 ‘ ...

Page 34

... Reserved, will default to ‘0001’ value to ‘1111’ Bit [3:0] = ‘0000’ Port 1 is unassigned ‘0001’ Port 1 owned by UP1 ‘0010’ Port 1 owned by UP2 ‘0011’ Reserved, will default to ‘0001’ value to ‘1111’ 34 DATASHEET TM USB MultiSwitch Hub Datasheet SMSC USB2524 ...

Page 35

... Register E9h: Port Assign Interface Configuration 6A (Reset = 0x00) BIT NUMBER BIT NAME 7:0 PORT_INT_6A SMSC USB2524 DESCRIPTION Port Assign Interface 5B: Determines the configuration of the hardware interface configuration for the assignment of ports 3 & upstream hosts. Bit [7:4] = ‘0000’ Port 4 is unassigned ‘0001’ Port 4 owned by UP1 ‘ ...

Page 36

... Reserved, will default to ‘0001’ value to ‘1111’ Bit [3:0] = ‘0000’ Port 1 is unassigned ‘0001’ Port 1 owned by UP1 ‘0010’ Port 1 owned by UP2 ‘0011’ Reserved, will default to ‘0001’ value to ‘1111’ 36 DATASHEET TM USB MultiSwitch Hub Datasheet SMSC USB2524 ...

Page 37

... NUMBER BIT NAME 7:0 PORT_ASSIGN_12 Port 1 & 2 Assignment to upstream host port. Determines which upstream port SMSC USB2524 DESCRIPTION Port Assign Interface 7B: Determines the configuration of the hardware interface configuration for the assignment of ports 3 & upstream hosts. Bit [7:4] = ‘0000’ Port 4 is unassigned ‘ ...

Page 38

... Bit 6= Reserved, always = ‘0’. Bit 5= Reserved, always = ‘0’. Bit 4= 1; Port 4 is locked. Bit 3= 1; Port 3 is locked. Bit 2= 1; Port 2 is locked. Bit 1= 1; Port 1 is locked. Bit 0 is Reserved, always = ‘0’ 38 DATASHEET TM USB MultiSwitch Hub Datasheet SMSC USB2524 ...

Page 39

... Reserved 2 INTF_PW_DN 1 RESET 0 USB_ATTACH SMSC USB2524 DESCRIPTION Reserved. {Note: Software must never write a ‘1’ to these bits} SMBus Interface Power Down 0 = Interface is active 1 = Interface power down after ACK has completed. {Note: This bit is write once and is only cleared by assertion of the external RESET_N pin ...

Page 40

... EEPROM Interface The SMSC Hub can be configured via a 2-wire (I or EEPROM Interface Behavior" EEPROM). The Internal state-machine will, (when configured for EEPROM support) read the external EEPROM for configuration data. The hub will then “attach” to the upstream USB port. ...

Page 41

... SMBus interface, external EEPROM support is no longer available (and the user-defined descriptor data must be downloaded via the SMBus). Due to system issues, the SMSC Hub waits indefinitely for the SMBus code load to complete and only “appears” newly connected device on USB after the code load is complete. The Hub’ ...

Page 42

... The SMBus Slave Interface complies with the SMBus AC Timing Specification. See the SMBus timing in the “Timing Diagram” section. Revision 1.91 (08-22-07) Figure 7.2 SMBus Block Read Register Address Data byte 2 A Block Read ). TIMEOUT, MAX 42 DATASHEET TM USB MultiSwitch Datasheet Slave Address Data byte Devices that TIMEOUT, MIN SMSC USB2524 Hub 2 C ... ...

Page 43

... LED functions with active high signaling, and the PAD will source the current to the external LED. HUB 7.5 Default Configuration When configured for Internal Defaults only, the Default ROM values in SMBus Register Memory Map" SMSC USB2524 +V Strap High 100K LED LED ...

Page 44

... Since these LED’s are provided to give an end-user a clear indication of Host Ownership of downstream ports, they will function when the hub is in suspend, and will indicate Host ownership even if the applicable assigned Host is disconnected, powered off, etc. Revision 1.91 (08-22-07) 44 DATASHEET TM USB MultiSwitch Hub Datasheet SMSC USB2524 ...

Page 45

... Red LED’s will both alternately light up giving the effect of the color Orange. When nothing is driven out on the LED pin (i.e. the pin floats to a “tri-state” condition), neither the Green or Red LED will light up, this is the “Off” state. SMSC USB2524 General Purpose ...

Page 46

... HS, and FS/LS will remain FS/LS) What will change is the 3rd color which represents an assigned port with no connection, when in suspend the corresponding LED will be off (giving the same indication as unassigned, while the hub is suspended). This disables the 1khz toggle while the hub is suspended. Revision 1.91 (08-22-07) 46 DATASHEET TM USB MultiSwitch Hub Datasheet SMSC USB2524 ...

Page 47

... The PLL is halted. LED indicators are disabled. The Hub is “operational” 500μs after RESET_N is negated. Once operational, the Hub immediately reads OEM-specific data from the external EEPROM (if the SMBus option is not disabled) or the internal ROM. SMSC USB2524 47 DATASHEET Revision 1.91 (08-22-07) ...

Page 48

... Driven by Hub if strap is an output. Don’t Care MIN 1 16.7 16.7 100 undefined 48 DATASHEET TM USB MultiSwitch Hub Datasheet Start completion Idle request response t7 t8 TYP MAX UNITS μsec nsec 1400 nsec μsec 1.5 2.0 100 msec msec msec 5 msec SMSC USB2524 ...

Page 49

... Completion time for requests (with or without data stage). Note 9.2 When in Bus-Powered mode, the Hub and its associated circuitry must not consume more than 100mA from the upstream USB power source during t4+t5+t6+t7. SMSC USB2524 Attach USB Reset + USB recovery Set Options ...

Page 50

... SMBus Code Hub PHY USB Reset USB Load Stabilization recovery Upstream MIN 1 Note 9.3) 100 50 DATASHEET TM USB MultiSwitch Datasheet Start completion Idle request response TYP MAX UNITS μsec μsec 500 250 300 msec 100 msec msec Undefined msec 5 msec SMSC USB2524 Hub ...

Page 51

... Hub Datasheet Complies with Section 11.10 of the USB 2.0 Specification for behavior after completion of the reset sequence. The Host then configures the Hub and the Hub’s downstream port devices in accordance with the USB Specification. SMSC USB2524 51 DATASHEET Revision 1.91 (08-22-07) ...

Page 52

... Chapter 10 XNOR Test Please contact your SMSC representative for a detailed description of how this test mode is enabled and utilized. Revision 1.91 (08-22-07) 52 DATASHEET TM USB MultiSwitch Hub Datasheet SMSC USB2524 ...

Page 53

... Hysteresis (‘IS’ Only) V HYSI Input Buffer with Pull-Up (IPU) Low Input Level V High Input Level V Low Input Leakage I ILL High Input Leakage I IHL SMSC USB2524 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +4. +3.3 V tolerance -5% to ±10 DDA33 Table 11.1 DC Electrical Characteristics MIN TYP MAX UNITS 0.8 ILI 2.0 IHI -10 ...

Page 54

... Upstream Port the process of being mA enumerated by an external Host controller (all downstream ports assigned to the Upstream port under enumeration). Note: Both Upstream Ports are in the process of being enumerated by mA external Host mA controllers. Total from all supplies SMSC USB2524 Hub ...

Page 55

... Clock Input C IN Capacitance Input Capacitance C IN Output Capacitance C OUT Power Sequencing There are no power supply sequence restrictions for the Hub. The order in which power supplies power-up and power-down is implementation dependent. SMSC USB2524 MIN TYP MAX UNITS 182 mA 182 mA 182 mA 182 mA μ ...

Page 56

... External Clock: 50% Duty cycle ± 10%, 24 MHz ± 100ppm, Jitter < 100ps rms. 12.1.1 SMBus Interface: The SMSC Switching Hub conforms to all voltage, power, and timing characteristics and specifications as set forth in the SMBus 1.0 Specification for Slave-Only devices (except as noted in "SMBus Slave Interface" ...

Page 57

... TM USB MultiSwitch Hub Datasheet Chapter 13 Package Outline Figure 13.1 USB2524 56-Pin QFN Package Outline and Parameters SMSC USB2524 57 DATASHEET Revision 1.91 (08-22-07) ...

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