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PDF USB2524 Data sheet ( Hoja de datos )
| Número de pieza | USB2524 | |
| Descripción | USB MultiSwitch Hub | |
| Fabricantes | SMSC Corporation | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de USB2524 (archivo pdf) en la parte inferior de esta página. Total 57 Páginas | ||
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USB2524
USB MultiSwitchTM Hub
PRODUCT FEATURES
Datasheet
USB2.0 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 multiple USB hosts to share peripherals and
enables a user to dynamically assign host ownership.
– Embedded Mode - 8 (predefined, OEM
programmable) configurations for port
assignment are selectable via three external
control signals.
– Peripheral Mode - Dedicated select pin for
every downstream port (total of 4), selectable
edge or level triggered in order to support a
wide range of possible switch configurations
and styles.
— Each host has a dedicated Single Transaction
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.
Downstream ports can be disabled or defined as non-
removable
Switching hub can be configured as compound
device for support of ‘embedded’ USB peripherals
Multiple LED modes for maximum implementation
flexibility
— USB Mode - 1 Single-color LED for each downstream
port (total of 8 LED’s).
— Host Ownership Mode - 8 Single-Color LED’s indicate
which upstream host each of the downstream ports are
assigned to.
— Host Ownership & Port Speed Mode - 8 Dual-Color
LED’s are used to indicate which upstream host each
of the downstream ports are assigned to, while
simultaneously indicating downstream port connection
speed.
Enhanced configuration options available through
either a Single Serial I2C EEPROM, or SMBus Slave
Port
— VID/PID/DID
— Port Configuration
— String Descriptors (each can support a maximum length
of 31 characters)
– Custom Manufacturer String
– Custom Product String
– Custom Serial String
— Assignment of downstream ports to upstream hosts
— Switching mechanism selection
Hardware Strapping options allow for configuration
without an external EEPROM or SMBus Host
— Default VID/PID/DID, allows functionality when
configuration EEPROM is absent
Complete USB Specification 2.0 Compatibility
— Includes USB2.0 Hi-Speed Transceivers
— High-Speed (480Mbits/s), Full-Speed (12Mbits/s) and
Low-Speed (1.5Mbits/s) compatible
— Full power management with choice of Individual or
Ganged power control
On-Board 24MHz Crystal Driver Circuit or 24 MHz
external clock driver
Internal PLL for 480MHz USB2.0 Sampling
Internal 1.8V Linear Voltage Regulator
Integrated USB termination and Pull-up/Pull-down
resistors
Internal Short Circuit protection of USB differential
signal pins
1.8 Volt Low Power Core Operation
3.3 Volt I/O with 5V Input Tolerance
56-Pin QFN Green, Lead-free Package
SMSC USB2524
DATASHEET
Revision 1.2 (07-17-06)
1 page  
USB MultiSwitchTM Hub
Datasheet
7.4 Default Strapping Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
7.5 Default Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Chapter 8 LED Interface Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
8.1 USB Mode: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
8.2 Basic Host Owner LED Indication: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
8.3 Host Ownership and Port Speed LED Indication:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Chapter 9 Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
9.1 Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
9.1.1 External Hardware RESET_N . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
9.1.1.1 RESET_N for Strapping Option Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
9.1.1.2 RESET_N for EEPROM Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
9.1.1.3 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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
12.1.1 SMBus Interface: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
12.1.2 I2C EEPROM: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
12.1.3 USB2.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Chapter 13 Package Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
SMSC USB2524
5
DATASHEET
Revision 1.2 (07-17-06)
5 Page 
USB MultiSwitchTM Hub
Datasheet
Chapter 3 Pin Layout
Table 3.1 USB2524 56-PIN QFN Pin Configuration Table
UPSTREAM USB2.0 INTERFACES (6 PINS)
USBUP_DP1
VBUS_DET1
USBUP_DM1
VBUS_DET2
USBUP_DP2
USBUP_DM2
DOWNSTREAM 4-PORT USB2.0 INTERFACE (30 PINS)
USBDN_DP1
USBDN_DP3
LED_A1_N/NON_REM0
LED_B1_N
PRTPWR1
OCS1_N
RBIAS
PRT_ASSIGN2
USBDN_DM1
USBDN_DM3
LED_A2_N/NON_REM1
LED_B2_N
PRTPWR2
OCS2_N
PRTPWR_POL
PRT_ASSIGN3
USBDN_DP2
USBDN_DP4
LED_A3_N/PRT_DIS0
LED_B3_N
PRTPWR3
OCS3_N
PRT_ASSIGN0
USBDN_DM2
USBDN_DM4
LED_A4_N/PRT_DIS1
LED_B4_N
PRTPWR4
OCS3_N
PRT_ASSIGN1
SERIAL PORT INTERFACE (4 PINS)
SDA/SMBDATA
SCL/SMBCLK/
CFG_SEL0
CFG_SEL1
CFG_SEL2
MISC (5 PINS)
XTAL1/CLKIN
TEST
XTAL2
RESET_N
SELF_PWR
ANALOG POWER & GROUND (5 PINS)
VDDPLL18(1)
VDDA33(4)
VDD33(3)
DIGITAL POWER, GROUND & NO CONNECT (6 PINS)
VDDCR18(2)
NC
TOTAL (56 PINS)
SMSC USB2524
11
DATASHEET
Revision 1.2 (07-17-06)
11 Page | ||
| Páginas | Total 57 Páginas | |
| PDF Descargar | [ Datasheet USB2524.PDF ] | |
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