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SMSC USB2524 manual

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Table of contents for the manual

  • Page 1

    SMSC USB2524 DA T ASHEET Revision 1.91 ( 08-22-07) Datasheet PRODUCT FEA TURES USB2524 USB MultiSwitch TM Hub  USB 2.0 Compatible 4-Port Hub with two upstream host port connections — Provides electronic reconfiguration and re-assignment of any of its 4 downstream ports to either of two upstream host ports (“on-the-fly”). — Allows multipl[...]

  • Page 2

    ORDER NUMBER(S): USB2524-ABZJ for 5 6-pin QFN Lead-Free RoHS Co mpliant Packag e USB MultiSwi tch TM Hub Datasheet Revision 1.91 (08-22-07) 2 SMSC USB2524 DA T ASHEET 80 ARKA Y DRIVE, HAUPP A UGE, NY 1 1788 (631) 435-6000 , F AX (63 1) 273-3123 Copyright © 20 07 SMSC or it s subsidiaries. A ll rights r eserved. Circuit diagrams and other informa t[...]

  • Page 3

    USB MultiSwitch TM Hub Datasheet SMSC USB2524 3 Revision 1.91 (08-22-07) DA T ASHEET T able of Content s Chapter 1 General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 1.1 OEM Selectable Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .[...]

  • Page 4

    USB MultiSwi tch TM Hub Datasheet Revision 1.91 (08-22-07) 4 SMSC USB2524 DA T ASHEET 7.1.4.28 Register D2h: Port Assign Interface Configuration 0B (Reset = 0x00) . . . . . . . . . . . . . . 30 7.1.4.29 Register D3h: Port Assign Interface Configuration 0C (Reset = 0x 00) . . . . . . . . . . . . . . 30 7.1.4.30 Register D4h: Port Assign Interface Co[...]

  • Page 5

    USB MultiSwitch TM Hub Datasheet SMSC USB2524 5 Revision 1.91 (08-22-07) DA T ASHEET 7.4 Default Strapping Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 7.5 Default Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .[...]

  • Page 6

    USB MultiSwi tch TM Hub Datasheet Revision 1.91 (08-22-07) 6 SMSC USB2524 DA T ASHEET List of Figures Figure 3.1 USB2524 QFN-56 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Figure 5.1 USB2524 Switching Hub B lock Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . .[...]

  • Page 7

    USB MultiSwitch TM Hub Datasheet SMSC USB2524 7 Revision 1.91 (08-22-07) DA T ASHEET List of T ables Table 2.1 USB2524 56-Pin QFN Pin Configuration Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Table 4.1 Switching H ub Pin Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .[...]

  • Page 8

    USB MultiSwi tch TM Hub Datasheet Revision 1.91 (08-22-07) 8 SMSC USB2524 DA T ASHEET Chapter 1 General Description The SMSC 4-Port USB 2.0 Switching Hub Controlle r acts as two independently co ntrollable USB 2.0 Hubs in a single package with the ability to elec tronically reassign and reconfigure any of its 4 downstream ports to either of it s tw[...]

  • Page 9

    USB MultiSwitch TM Hub Datasheet SMSC USB2524 9 Revision 1.91 (08-22-07) DA T ASHEET 1.1 OEM Select able Features A default configuration is avai lable in the USB2524 followi ng a reset. This configuration may be sufficient for some applications. S trapping option pins make it possible to modify a limited sub-set of the configuration optio ns. The [...]

  • Page 10

    USB MultiSwi tch TM Hub Datasheet Revision 1.91 (08-22-07) 10 SMSC USB2524 DA T ASHEET Chapter 2 Pin Layout T able 2.1 USB2524 56-Pin QFN Pin Configu ration T able UPSTREAM USB 2.0 INTERF ACES (6 PINS) USBUP_DP1 USBUP_DM1 USBUP_DP2 USBUP_DM2 VBUS_DET1 VBUS_DET2 DOWNSTREAM 4-PORT USB 2.0 INTERF ACE (30 PINS) USBDN_DP1 USBDN_DM1 USBDN_DP2 OCS1_N USBD[...]

  • Page 11

    USB MultiSwitch TM Hub Datasheet SMSC USB2524 1 1 Revision 1.91 (08-22-07) DA T ASHEET Chapter 3 Pin Configuration Figure 3.1 USB2 524 QFN- 56 thermal slug connect s to VSS 41 PRT_AS SIGN0 40 PRT_AS SIGN1 39 PRT_AS SIGN2 38 PRT_AS SIGN3 37 VDD33 36 SELF _PWR 35 CFG_ SEL2 34 CFG_ SEL1 32 SDA/SMBDATA 31 LED_B 1_N 29 LED_B 2_N 30 LED_A1_N/NON_REM0 33 [...]

  • Page 12

    USB MultiSwi tch TM Hub Datasheet Revision 1.91 (08-22-07) 12 SMSC USB2524 DA T ASHEET Chapter 4 Switching Hub Pin Descriptions T able 4.1 Switching Hub P in Descriptions NAME SYMBOL T YPE FUNCTION UPSTREAM USB 2.0 IN TERF ACE USB Bus Data USBUP_DP[2:1] USBUP_DM[2:1] IO-U These pins connect to the upstream USB bus dat a signals. Detect Upstream VBU[...]

  • Page 13

    USB MultiSwitch TM Hub Datasheet SMSC USB2524 13 Revision 1.91 (08-22-07) DA T ASHEET Port [2:1] Green LED & Port Non- Removable strapping option LED_A[2:1]_N/ NON_REM[1:0] I/O12 Green indi cator LED for ports 2 and 1. Wil l be active low when LED support is ena bled via EEPROM or SMBus. If the hub is configured by th e internal defaul t config[...]

  • Page 14

    USB MultiSwi tch TM Hub Datasheet Revision 1.91 (08-22-07) 14 SMSC USB2524 DA T ASHEET Assign Downstream Ports to Ups tream Host Ports PRT_ASSIGN [3:0] I Port Assign Interface: Operat es in eith er Embedded mode, or Periphera l mode. See Ch apter 6, Assigning Ports for additional details. SERIAL PORT INTERF ACE Serial Data/SMB Data SDA/SMBDA T A IO[...]

  • Page 15

    USB MultiSwitch TM Hub Datasheet SMSC USB2524 15 Revision 1.91 (08-22-07) DA T ASHEET 1 0 0 Internal Default Configurati on  PRT_ASSIGN[3:0] = Periphera l Mode (Edge T riggered)  LED Mode = Host Ownership Mode  St r a p  options on pins LED_A[4:1]_N a re enabled.  Supports unassigned Ports 1 0 1 Internal Default Configurati on  PR[...]

  • Page 16

    USB MultiSwi tch TM Hub Datasheet Revision 1.91 (08-22-07) 16 SMSC USB2524 DA T ASHEET VDD PLL VDDPLL 18 +1.8V Filtered analog powe r for internal PLL. This pin m ust have a 4.7 μ F (or greater) ±20% (ESR <0.1 Ω) capacitor to VSS VDD Analog I/O VDDA33 +3.3V Filtered analog PHY power, shared between adjacent ports. VSS VSS Ground NC NC No Conn[...]

  • Page 17

    SMSC USB2524 17 Revision 1.91 (08-22-07) DA T ASHEET Chapter 5 Switching Hub Block Diagram Figure 5.1 USB2524 Switch ing Hub Block Diagram U pst ream V BUS U pst r eam PHY U pst ream USB Dat a R epeat er Cont r ol l er SI E Ser i al I nter face Sw i t chi ng Logi c D ow n st ream PHY #1 Por t #1 OC S en s e Sw i t ch D ri ver LE D Dr i ve r s D ow [...]

  • Page 18

    USB MultiSwi tch TM Hub Datasheet Revision 1.91 (08-22-07) 18 SMSC USB2524 DA T ASHEET Chapter 6 Assigning Port s There are two different (OEM selectable) methods of assigning downstream ports to upstream hosts. One method is with the PRT_ASSIGN [3:0] interface through the us e of mechanical switches or by electrical control of the pins vi a an ext[...]

  • Page 19

    USB MultiSwitch TM Hub Datasheet SMSC USB2524 19 Revision 1.91 (08-22-07) DA T ASHEET Note 6.4 X = Don’t Care 6.1.2 Peripheral Mode: Level T riggered In Peripheral Mode (Le vel T riggered), each pin di re ctly sw itches a downstream port between the two upstream host ports. Each pin on the PRT_ASSIGN in terface is only capable of two electrical s[...]

  • Page 20

    USB MultiSwi tch TM Hub Datasheet Revision 1.91 (08-22-07) 20 SMSC USB2524 DA T ASHEET Chapter 7 Configuration Options 7.1 Switching Hub Configuration Options The SMSC Hub supports a large number of featur es (some are mutually exclusive), and must be configured i n order to cor rectly functi on when attached to a U SB host cont roller . Th ere are[...]

  • Page 21

    USB MultiSwitch TM Hub Datasheet SMSC USB2524 21 Revision 1.91 (08-22-07) DA T ASHEET 0Ah R/W Port Disable (Self) PDS 00h 0Bh R/W Port Disable (Bus) PDB 00h 0Ch R/W Max Power (Self) MAXPS 01h 0Dh R/W Max Power (Bus) MAXPB 64h 0Eh R/W Hub Controller Max Current (Self) HCMCS 01h 0Fh R/W Hub Controller Max Current (bus) HCMCB 64h 10h R/W Power-on T im[...]

  • Page 22

    USB MultiSwi tch TM Hub Datasheet Revision 1.91 (08-22-07) 22 SMSC USB2524 DA T ASHEET 7.1.4.1 Register 00h: V endor ID (LSB) (Reset = 0x00) 7.1.4.2 Register 01h: V endor ID (MSB) (Reset = 0x00) 7.1.4.3 Register 02h: Product ID (LSB) (Reset = 0x00) 7.1.4.4 Register 03h: Product ID (MSB) (Reset = 0x00) 7.1.4.5 Register 04h: Device ID (LSB) (Reset = [...]

  • Page 23

    USB MultiSwitch TM Hub Datasheet SMSC USB2524 23 Revision 1.91 (08-22-07) DA T ASHEET 7.1.4.7 Register 06h: CONFIG_BYTE_1 (Reset = 0x00) BIT NUMBER BIT NAME DESCRIPTION 7 SELF_BUS_PWR Self or Bus Power: Selects between Self- and Bus-Powered opera tion. The Hub is either Self-Powered (draws less than 2mA of upstream bus power) or Bus-Powered (limite[...]

  • Page 24

    USB MultiSwi tch TM Hub Datasheet Revision 1.91 (08-22-07) 24 SMSC USB2524 DA T ASHEET 7.1.4.8 Register 07h: Configu ration Dat a Byte 2 (Reset = 0x00) 7.1.4.9 Register 08h: Configu ration Dat a Byte 3 (Reset = 0x00) BIT NUMBER BIT NAME DESCRIPTION 7 DYNAMIC Dynamic Power Enable: Controls th e abili ty of the Hub to automatically change from Self-P[...]

  • Page 25

    USB MultiSwitch TM Hub Datasheet SMSC USB2524 25 Revision 1.91 (08-22-07) DA T ASHEET 7.1.4.10 Register 09h: Non- Removab le Device (R eset = 0x00) 5 PRT_ASSIGN_CFG Port Assi gnment Configuration: ‘0’ = Port assignment is controlled by ha rdware interface pins ‘1’ = Port assignment is controlled by: PORT_ASSIGN_12 PORT_ASSIGN_34 PORT_ASSIGN[...]

  • Page 26

    USB MultiSwi tch TM Hub Datasheet Revision 1.91 (08-22-07) 26 SMSC USB2524 DA T ASHEET 7.1.4.1 1 Register 0Ah: Port Disable For Self Powe red Operation (Reset = 0x00) 7.1.4.12 Register 0Bh: Port Disable For Bus Power ed Operation (Reset = 0x00 ) 7.1.4.13 Register 0Ch: Max Power For Se lf Power ed Operation (Re set = 0x00) BIT NUMBER BIT NAME DESCRI[...]

  • Page 27

    USB MultiSwitch TM Hub Datasheet SMSC USB2524 27 Revision 1.91 (08-22-07) DA T ASHEET 7.1.4.14 Register 0Dh: Max Power For Bus Powered Operation (Re set = 0x00) 7.1.4.15 Register 0Eh: Hub Controller Max Curr ent For Self Powered Opera tion (Reset = 0x00) 7.1.4.16 Register 0Fh: Hub Controller Max Curre nt For Bus Powered Operation (Reset = 0x 00) 7.[...]

  • Page 28

    USB MultiSwi tch TM Hub Datasheet Revision 1.91 (08-22-07) 28 SMSC USB2524 DA T ASHEET 7.1.4.20 Register 13h: Manufact urer String Length (Reset = 0x00) 7.1.4.21 Register 14h: Product String Leng th (Reset = 0x00) 7.1.4.22 Register 15h: Serial S tring Length (Reset = 0x00) 7.1.4.23 Register 16h-53h: Manufacturer S tring (Reset = 0x00) 7.1.4.24 Regi[...]

  • Page 29

    USB MultiSwitch TM Hub Datasheet SMSC USB2524 29 Revision 1.91 (08-22-07) DA T ASHEET 7.1.4.25 Register 92h-CFh: Se rial String (Re set = 0x00) 7.1.4.26 Register D0h: Port Interface Delay Time r (Reset = 0x00) 7.1.4.27 Register D1h: Port Assign In terface Configurat ion 0A (Reset = 0x00) BIT NUMBER BIT NAME DESCRIPTION 7:0 SER_STR Serial S tring, U[...]

  • Page 30

    USB MultiSwi tch TM Hub Datasheet Revision 1.91 (08-22-07) 30 SMSC USB2524 DA T ASHEET 7.1.4.28 Register D2h: Port Assign In terface Configurat ion 0B (Reset = 0x00) 7.1.4.29 Register D3h: Port Assign In terface Configurat ion 0C (Reset = 0x00) 7.1.4.30 Register D4h: Port Assign In terface Configurat ion 0D (Reset = 0x00) 7.1.4.31 Register D5h: Por[...]

  • Page 31

    USB MultiSwitch TM Hub Datasheet SMSC USB2524 31 Revision 1.91 (08-22-07) DA T ASHEET 7.1.4.32 Register D6h: Port Assign In terface Configurat ion 1B (Reset = 0x00) 7.1.4.33 Register D7h: Port Assign In terface Configurat ion 1C (Reset = 0x00) 7.1.4.34 Register D8h: Port Assign In terface Configurat ion 1D (Reset = 0x00) 7.1.4.35 Register D9h: Port[...]

  • Page 32

    USB MultiSwi tch TM Hub Datasheet Revision 1.91 (08-22-07) 32 SMSC USB2524 DA T ASHEET 7.1.4.36 Register DAh: Port Assign Inte r face Configuration 2B (Reset = 0x00) 7.1.4.37 Register DBh: Port Assign Inte r face Configuration 2C (Reset = 0x00) 7.1.4.38 Register DCh: Port Assign Inte r face Configuration 2D (Reset = 0x00) 7.1.4.39 Register DDh: Por[...]

  • Page 33

    USB MultiSwitch TM Hub Datasheet SMSC USB2524 33 Revision 1.91 (08-22-07) DA T ASHEET 7.1.4.40 Register DEh: Port Assign Inte rface Configura tion 3B (Reset = 0x00) 7.1.4.41 Register DFh: Port Assign Inte rface Configuration 3C (Reset = 0x00) 7.1.4.42 Register E0h: Port Assign In terface Configuration 3D (Res et = 0x00) 7.1.4.43 Register E1h: Port [...]

  • Page 34

    USB MultiSwi tch TM Hub Datasheet Revision 1.91 (08-22-07) 34 SMSC USB2524 DA T ASHEET 7.1.4.44 Register E2h: Port Assign In terface Configuration 4B (Res et = 0x00) 7.1.4.45 Register E3h: Port Assign In terface Configuration 4C (Res et = 0x00) 7.1.4.46 Register E4h: Port Assign In terface Configuration 4D (Res et = 0x00) 7.1.4.47 Register E5h: Por[...]

  • Page 35

    USB MultiSwitch TM Hub Datasheet SMSC USB2524 35 Revision 1.91 (08-22-07) DA T ASHEET 7.1.4.48 Register E6h: Port Assign In terface Configuration 5B (Res et = 0x00) 7.1.4.49 Register E7h: Port Assign In terface Configuration 5C (Res et = 0x00) 7.1.4.50 Register E8h: Port Assign In terface Configuration 5D (Res et = 0x00) 7.1.4.51 Register E9h: Port[...]

  • Page 36

    USB MultiSwi tch TM Hub Datasheet Revision 1.91 (08-22-07) 36 SMSC USB2524 DA T ASHEET 7.1.4.52 Register EAh: Port Assign Inte rface Configura tion 6B (Reset = 0x00) 7.1.4.53 Register EBh: Port Assign Inte rface Configura tion 6C (Reset = 0x00) 7.1.4.54 Register ECh: Port Assign Inte rface Configura tion 6D (Reset = 0x00) 7.1.4.55 Register EDh: Por[...]

  • Page 37

    USB MultiSwitch TM Hub Datasheet SMSC USB2524 37 Revision 1.91 (08-22-07) DA T ASHEET 7.1.4.56 Register EEh: Port Assign Interf ace Configuratio n 7B (Res et = 0x00) 7.1.4.57 Register EFh: Port Assign In terface Configurat ion 7C (Reset = 0x00) 7.1.4.58 Register F0h: Port Assign Inte r face Configuration 7D (Reset = 0x00) 7.1.4.59 Register F1h: Por[...]

  • Page 38

    USB MultiSwi tch TM Hub Datasheet Revision 1.91 (08-22-07) 38 SMSC USB2524 DA T ASHEET 7.1.4.60 Register F2h: Port Assignment 3 & 4 (Reset = 0x00) 7.1.4.61 Register F3h: Port Assignment 5 & 6 (Reset = 0x00) 7.1.4.62 Register F4h: Port Assignment 7 (Reset = 0x 00) 7.1.4.63 Register F5h: Port Lockout (Reset = 0x00) BIT NUMBER BIT NAME DESCRIP[...]

  • Page 39

    USB MultiSwitch TM Hub Datasheet SMSC USB2524 39 Revision 1.91 (08-22-07) DA T ASHEET 7.1.4.64 Register FFh: St atus/Command (Reset = 0x00) BIT NUMBER BIT NAME DESCRIPTION 7:3 Reserved Reserved. {Note: Software must never write a ‘1’ to these bits} 2 INTF_PW_DN SMBus Interface Power Down 0 = Interface is active 1 = Interface powe r down after A[...]

  • Page 40

    USB MultiSwi tch TM Hub Datasheet Revision 1.91 (08-22-07) 40 SMSC USB2524 DA T ASHEET 7.2 EEPROM Interface The SMSC Hub can be configured via a 2-wire (I 2 C) EEPROM (256x8). (p lease see T able 4.2, "SMBus or EEPROM Interface Behavior" for specific details on how to enable configuration via an I 2 C EEPROM). The Internal state-machine w[...]

  • Page 41

    USB MultiSwitch TM Hub Datasheet SMSC USB2524 41 Revision 1.91 (08-22-07) DA T ASHEET 7.3 SMBus Slave Interface Instead of loading User-Defi ned Descriptor data from an external EEPROM, the SMSC Hub can be configured to receive a code load from an externa l processor via an SMBus interface. The SMBus interface shares the same pins as the EEPROM int[...]

  • Page 42

    USB MultiSwi tch TM Hub Datasheet Revision 1.91 (08-22-07) 42 SMSC USB2524 DA T ASHEET A Block Read differs from a block write in that th e repeated start conditio n exists to satisfy the I 2 C specification's requirement for a change in the transfer direction. Figure 7.2 SMBus Block Read 7.3.2 I nvalid Protocol Response Behavior Registers tha[...]

  • Page 43

    USB MultiSwitch TM Hub Datasheet SMSC USB2524 43 Revision 1.91 (08-22-07) DA T ASHEET 7.3.7 B us Reset Sequence The SMBus Slave Interface resets and returns to the idle state upon a ST ART field followed immediately by a STOP field. 7.3.8 S MBus Alert Response Address The SMBALERT# signal is not supported by the Hub. 7.3.8.1 Undefined Registers Rea[...]

  • Page 44

    USB MultiSwitch TM Hub Datasheet Revision 1.91 (08-22-07) 44 SMSC USB2524 DA T ASHEET Chapter 8 LED Interface Description The USB2524 supports 3 dif ferent (mutually excl usive) LED modes. USB Mode provides 8 LEDS, which conform to the USB 2.0 specification functi onal requirements for Green and Amber LED’s. Basic Host Owner LED Indication mode u[...]

  • Page 45

    USB MultiSwitch TM Hub Datasheet SMSC USB2524 45 Revision 1.91 (08-22-07) DA T ASHEET 8.3 Host Ownership and Po rt S peed LED Indication: All 8 LED pins are used in this mod e in conjunction with 8 Dual-color LEDs (each LED pair in a single package) to indicate which upstream Host owns each specific downstream Port, as well as the speed that the do[...]

  • Page 46

    USB MultiSwitch TM Hub Datasheet Revision 1.91 (08-22-07) 46 SMSC USB2524 DA T ASHEET The assignment is as follow s: LED_A1_N = Port 1 Owned By Host A LED_B1_N = Port 1 Owned By Host B LED_A2_N = Port 2 Owned By Host A LED_B2_N = Port 2 Owned By Host B LED_A3_N = Port 3 Owned By Host A LED_B3_N = Port 3 Owned By Host B LED_A4_N = Port 4 Owned By Ho[...]

  • Page 47

    USB MultiSwitch TM Hub Datasheet SMSC USB2524 47 Revision 1.91 (08-22-07) DA T ASHEET Chapter 9 Reset 9.1 Reset There are two different resets th at the Hub experiences. One is a hardware reset (via the RESET_N pin) and the second is a USB Bus Reset. 9.1.1 E xternal Hardware RESET_N A valid hardware reset is defined as, assertion of RESET_N for a m[...]

  • Page 48

    USB MultiSwitch TM Hub Datasheet Revision 1.91 (08-22-07) 48 SMSC USB2524 DA T ASHEET 9.1.1.1 RESET_N for Strappin g Option Configuration Figure 9.1 Reset_N Timing fo r Default/Stra p Option Mode Note 9.1 When in Bus-Powered mode, the H ub and its associated circ uitry must not consume more than 100mA from the upstream US B powe r source during t1+[...]

  • Page 49

    USB MultiSwitch TM Hub Datasheet SMSC USB2524 49 Revision 1.91 (08-22-07) DA T ASHEET 9.1.1.2 RESET_N for EEPROM Configuration Figure 9.2 Reset_N Ti ming for EEPROM Mode Note 9.2 When in Bus-Powered mode, the H ub and its associated circ uitry must not consume more than 100mA from the upstream USB power source during t4+t5+t6+t7. T able 9.2 Reset_N[...]

  • Page 50

    USB MultiSwitch TM Hub Datasheet Revision 1.91 (08-22-07) 50 SMSC USB2524 DA T ASHEET 9.1.1.3 RESET_N for SMBu s Slave Configuration Figure 9.3 Reset_N Timing for SMBus Mode Note: For Bus-Powered configura tions, the Hub and its associated ci rcuitry will consume more than 100mA from the upstream USB power source during t2+t3+t4+t5+t6+t7. Note 9.3 [...]

  • Page 51

    USB MultiSwitch TM Hub Datasheet SMSC USB2524 51 Revision 1.91 (08-22-07) DA T ASHEET  Complies with Section 1 1.10 of the USB 2.0 S pecific ation for behavior after completion of the reset sequence. The Host then configures the Hub and the Hub’s do wnstream port devices in acco rdance with the USB S pecification.[...]

  • Page 52

    USB MultiSwitch TM Hub Datasheet Revision 1.91 (08-22-07) 52 SMSC USB2524 DA T ASHEET Chapter 10 XNOR T est Please contact your SMSC representative for a detai led description of how this te st mode is enabled and utilized.[...]

  • Page 53

    USB MultiSwitch TM Hub Datasheet SMSC USB2524 53 Revision 1.91 (08-22-07) DA T ASHEET Chapter 1 1 DC Parameters 1 1.1 Maximum Guaranteed Ratings Operating T emperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 o C to +70 o C S torage T emperature Range . . . . . . . . . . . . . . . . . . . .[...]

  • Page 54

    USB MultiSwitch TM Hub Datasheet Revision 1.91 (08-22-07) 54 SMSC USB2524 DA T ASHEET Input Buffer with Pull- Down (IPD ) Low Input Leve l High Input Level Low Input Leakage High Input Leakage V ILI V IHI I ILL I IHL 2.0 0.8 30 10 V V uA uA TTL Levels V IN = 0 V IN = V DD33 ICLK Input Buffer Low Input Leve l High Input Level Input Leakage V ILCK V [...]

  • Page 55

    USB MultiSwitch TM Hub Datasheet SMSC USB2524 55 Revision 1.91 (08-22-07) DA T ASHEET Note 1 1.1 Output leakage is measur ed with the current pins i n high impedance. Note 1 1.2 See USB 2.0 S pecification for U SB DC electrical characte ristics. Note 1 1.3 RBIAS is a 3.3V tolerant ana log pin. CAP ACIT ANCE T A = 25°C; fc = 1MHz; V DDIO = 3.3 V Po[...]

  • Page 56

    USB MultiSwitch TM Hub Datasheet Revision 1.91 (08-22-07) 56 SMSC USB2524 DA T ASHEET Chapter 12 AC S pecifications 12.1 Oscillator/Clock Crystal: Parallel Resonant, Fundamental Mode, 24 MHz ± 100ppm. External Clock: 50% Duty cycl e ± 1 0 % , 2 4 M H z ± 100ppm, Jitter < 100 ps rms. 12.1.1 SMBus Interface: The SMSC Switching Hub conforms to a[...]

  • Page 57

    USB MultiSwitch TM Hub Datasheet SMSC USB2524 57 Revision 1.91 (08-22-07) DA T ASHEET Chapter 13 Package Outline Figure 13.1 USB2524 56-Pin QF N Package Outline an d Parameters[...]