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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”).
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.
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 .
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) .
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 .
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.
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 .
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.
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.
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.
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 S.
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.
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.
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.
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.
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.
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.
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.
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.
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 .
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 .
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.
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.
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.
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: ‘.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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).
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.
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.
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.
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.
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 Du.
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.
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.
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.
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.
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.
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.
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.
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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.
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.
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.
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.
Een belangrijk punt na aankoop van elk apparaat SMSC USB2524 (of zelfs voordat je het koopt) is om de handleiding te lezen. Dit moeten wij doen vanwege een paar simpele redenen:
Als u nog geen SMSC USB2524 heb gekocht dan nu is een goed moment om kennis te maken met de basisgegevens van het product. Eerst kijk dan naar de eerste pagina\'s van de handleiding, die je hierboven vindt. Je moet daar de belangrijkste technische gegevens SMSC USB2524 vinden. Op dit manier kan je controleren of het apparaat aan jouw behoeften voldoet. Op de volgende pagina's van de handleiding SMSC USB2524 leer je over alle kenmerken van het product en krijg je informatie over de werking. De informatie die je over SMSC USB2524 krijgt, zal je zeker helpen om een besluit over de aankoop te nemen.
In een situatie waarin je al een beziter van SMSC USB2524 bent, maar toch heb je de instructies niet gelezen, moet je het doen voor de hierboven beschreven redenen. Je zult dan weten of je goed de alle beschikbare functies heb gebruikt, en of je fouten heb gemaakt die het leven van de SMSC USB2524 kunnen verkorten.
Maar de belangrijkste taak van de handleiding is om de gebruiker bij het oplossen van problemen te helpen met SMSC USB2524 . Bijna altijd, zal je daar het vinden Troubleshooting met de meest voorkomende storingen en defecten #MANUAl# samen met de instructies over hun opplosinge. Zelfs als je zelf niet kan om het probleem op te lossen, zal de instructie je de weg wijzen naar verdere andere procedure, bijv. door contact met de klantenservice of het dichtstbijzijnde servicecentrum.