USB2514B-AEZG Standard Microsystems (SMSC), USB2514B-AEZG Datasheet - Page 23

• Manufacturer Part Number: USB2514B-AEZG
• Description: USB CHIP
• Manufacturer: Standard Microsystems (SMSC)

Specifications of USB2514B-AEZG

• Lead Free Status / RoHS Status: Supplier Unconfirmed

USB 2.0 Hi-Speed Hub Controller
Datasheet
SMSC USB251x
LED_A_N[x:1] /
LED_B_N[7:4]
LED_B_N[3] /
PRTSWP[x:1]
GANG_EN
SYMBOL
BUFFER
TYPE
I/O12
I/O12
I/O12
DOWNSTREAM USB 2.0 INTERFACES (continued)
Table 5.2 USB251x Pin Descriptions (continued)
Port LED Indicators
This pin will be active low when LED support is enabled via EEPROM or
SMBus.
Port Swap Strapping Option
If this strap is enabled by package and configuration settings (see
"Hub Configuration
to determine the electrical connection polarity of the downstream USB port
pins (USB_DP and USB_DM).
Also, the active state of the LED will be determined as follows:
‘0’ = Port polarity is normal, LED is active high.
‘1’ = Port polarity (USB_DP and USB_DM) is swapped, LED is active low.
Enhanced Indicator Port LED for ports 4-7
Enhanced indicator LED for ports 4-7. This pin will be active low when LED
support is enabled via EEPROM or SMBus.
Enhanced Indicator Port LED for port 3
This pin will be active low when LED support is enabled via EEPROM or
SMBus.
Ganged Power and Over-current strap option
This signal selects between ganged or individual port power and over-current
sensing. If this strap is enabled by package and configuration settings (see
Table 8.1, "Hub Configuration
negation to determine the mode as follows:
‘0’ = Individual sensing and switching, LED_B_N[3] is active high.
‘1’ = Ganged sensing and switching, LED_B_N[3] is active low.
DATASHEET
Options"), this pin will be sampled at RESET_N negation
23
Options"), this pin will be sampled at RESET_N
DESCRIPTION
Revision 1.1 (04-26-10)
Table 8.1,