USB2517I-JZX SMSC, USB2517I-JZX Datasheet - Page 33

• Manufacturer Part Number: USB2517I-JZX
• Description: IC CTRLR USB2.0 7PORT 64QFN
• Manufacturer: SMSC
• Type: USB HUB Controllerr

Specifications of USB2517I-JZX

• Controller Type: USB 2.0 Controller
• Interface: Serial EEPROM
• Voltage - Supply: 3 V ~ 3.6 V
• Current - Supply: 130mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 64-QFN
• Operating Supply Voltage: 3.3 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Operating Temperature Range: - 40 C to + 85 C
• Supply Current: 120 mA
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 638-1090

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)