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PDF USB2507 Data sheet ( Hoja de datos )
| Número de pieza | USB2507 | |
| Descripción | Integrated USB 2.0 Compatible 7-Port Hub | |
| Fabricantes | SMSC Corporation | |
| Logotipo |  |
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USB2507
Integrated USB 2.0
Compatible 7-Port Hub
PRODUCT FEATURES
Integrated USB 2.0 Compatible 7-Port Hub
— 7 Transaction Translators for highest performance
— High-Speed (480Mbits/s), Full-Speed (12Mbits/s) and
Low-Speed (1.5Mbits/s) compatible
— Full power management with per port or ganged,
selectable power control
— Detects Bus-Power/Self-Power source and changes
mode automatically
Complete USB Specification 2.0 Compatibility
— Includes USB 2.0 Transceivers
VID/PID/DID, and Port Configuration for Hub via:
— Single Serial I2C EEPROM
— SMBus Slave Port
Default VID/PID/DID, allows functionality when
configuration EEPROM is absent
Hardware Strapping options allow for configuration
without an external EEPROM or SMBus Host
Datasheet
On-Board 24MHz Crystal Driver Circuit or 24 MHz
external clock driver
Internal PLL for 480MHz USB 2.0 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
80-Pin TQFP lead-free RoHS compliant package
SMSC USB2507
DATASHEET
Revision 2.1 (12-06-06)
1 page  
Integrated USB 2.0 Compatible 7-Port Hub
Datasheet
List of Tables
Table 2.1 7-Port Pin Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 4.1 7-Port Hub Pin Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Table 4.2 SMBus or EEPROM Interface Behavior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Table 4.3 Miscellaneous Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Table 4.4 Power, Ground, and No Connect. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Table 4.5 Buffer Type Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Table 5.1 User-Defined Descriptor Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Table 5.2 SMBus Write Byte Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Table 5.3 SMBus Read Byte Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Table 5.4 SMBus Slave Interface Register Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Table 5.5 Reset_N Timing for Default/Strap Option Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Table 5.6 Reset_N Timing for EEPROM Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Table 5.7 Reset_N Timing for SMBus Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Table 7.1 DC Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Table 9.1 80 Pin TQFP Package Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
SMSC USB2507
5
DATASHEET
Revision 2.1 (12-06-06)
5 Page 
Integrated USB 2.0 Compatible 7-Port Hub
Datasheet
Table 4.1 7-Port Hub Pin Descriptions (continued)
NAME
Port 4 Amber
LED
&
LED Enable
strapping option
SYMBOL
AM4/
LED_EN
Port 3 Amber
LED
Port 2 Amber
LED
&
MTT Disable
AM3
AM2/
MTT_EN
Port 1 Amber
LED
&
Gang Power
Switching and
Current Sensing
strapping option.
AM1/
GANG_EN
Port Power
PRTPWR_POL
Polarity strapping.
Over Current
Sense
USB Transceiver
Bias
OCS7:1_N
RBIAS
TYPE
I/O12
I/O12
I/O12
I/O12
I/O12
IPU
I-R
FUNCTION
Amber indicator LED for port 4. Will be active low when LED
support is enabled via EEPROM or SMBus.
If the hub is configured by the internal default configuration,
this pin will be sampled at RESET_N negation to determine
if LED support is enabled or disabled. Also, the active state
of the LED will be determined as follows:
‘0’ = LED support is disabled, LED is inactive
‘1’ = LED Support is enabled, LED is active low.
Amber indicator LED for port 3. Signal will be active low.
Amber indicator LED for port 2. Will be active low when LED
support is enabled via EEPROM or SMBus.
If the hub is configured by the internal default configuration,
this pin will be sampled at RESET_N negation to determine
if MTT support is disabled (STT only). Also, the active state
of the LED will be determined as follows:
‘0’ = MTT support is disabled, LED is active high
‘1’ = MTT support is enabled, LED is active low.
Amber indicator LED for port 1, Will be active low when LED
support is enabled via EEPROM or SMBus.
If the hub is configured by the internal default configuration,
this pin will be sampled at RESET_N negation to determine
if downstream port power switching and current sensing are
ganged, or individual port-by-port. Also, the active state of
the LED will be determined as follows:
‘0’ = Port-by-port sensing & switching, LED is active high
‘1’ = Ganged sensing & switching, LED is active low.
Port Power Polarity strapping determination for the active
signal polarity of the 7:1PRTPWR pins.
While RESET_N is asserted, the logic state of this pin will
(though the use of internal combinatorial logic) determine
the active state of the 7:1PRTPWR pins in order to ensure
that downstream port power is not inadvertently enabled to
inactive ports during a hardware reset.
On the rising edge of RESET_N (see the applicable
RESET_N timing table in Section 5.6.1), the logic value will
be latched internally, and will retain the active signal polarity
for the PRTPWR7:1 pin.
‘1’ = PRTPWR7:1 pins have an active ‘high’ polarity
‘0’ = PRTPWR7:1 pins have an active ‘low’ polarity
Input from external current monitor indicating an over-
current condition. {Note: Contains internal pull-up to 3.3V
supply}
A 12.0kΩ (+/− 1%) resistor is attached from ground to this
pin to set the transceiver’s internal bias settings.
SMSC USB2507
11
DATASHEET
Revision 2.1 (12-06-06)
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet USB2507.PDF ] | |
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