EVB-USB2512Q36-BAS SMSC, EVB-USB2512Q36-BAS Datasheet - Page 33

• Manufacturer Part Number: EVB-USB2512Q36-BAS
• Description: BOARD EVAL FOR USB2512/USB2512I
• Manufacturer: SMSC

Specifications of EVB-USB2512Q36-BAS

• Main Purpose: Interface, USB 2.0 Hub
• Embedded: No
• Utilized Ic / Part: USB2512, USB2512I
• Primary Attributes: Dual Port Hub, High Speed (480Mbps), I2C/SMBus
• Secondary Attributes: Overcurrent Protection, Port Power Switching, ESD Protection
• 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: USB2512
• Other names: 638-1041; EVB-USB2512Q36-BAS (USB2512/USB2512I)

USB 2.0 Hi-Speed Hub Controller
Datasheet
Chapter 8 Configuration Options
SMSC USB251x
8.1
8.1.1
8.1.2
CFG_SEL[2]
0
0
0
0
SMSC’s USB 2.0 hub is fully specification compliant to the Universal Serial Bus specification, version
2.0, April 27, 2000 (12/7/2000 and 5/28/2002 Errata). Please reference Chapter 10 (Hub specification)
for general details regarding hub operation and functionality.
The hub provides 1 Transaction Translator (TT) that is shared by both downstream ports (defined as
Single-TT configuration), The TT contains 4 non-periodic buffers.
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, or by internal default settings (with or without
configuration option over-rides). In all cases, the configuration method will be determined by the
CFG_SEL[2], CFG_SEL[1] and CFG_SEL[0] pins immediately after RESET_N negation. Please refer
to
SMBus or EEPROM Interface
Hub
Table 8.1, "Hub Configuration Options"
CFG_SEL[1]
0
0
1
1
CFG_SEL[0]
Table 8.1 Hub Configuration Options
0
1
0
1
DATASHEET
Internal Default Configuration without any over-rides
Configured as an SMBus slave for external download of
user-defined descriptors
Internal Default Configuration
2-Wire I
for more information.
Strap options enabled
Self-powered operation enabled
LED mode = Speed (when available on package)
Individual power switching
Individual over-current sensing
Strap options disabled
All settings are controlled by registers as set by the user
Strap options enabled
Bus-powered operation
LED mode = USB (when available on package)
Individual power switching
Individual over-current sensing
Strap options disabled
All settings are controlled by registers as set by the user
33
2
C EEPROMS are supported
DESCRIPTION
Revision 1.1 (04-26-10)