USB2514-HZH Standard Microsystems (SMSC), USB2514-HZH Datasheet - Page 22

• Manufacturer Part Number: USB2514-HZH
• Manufacturer: Standard Microsystems (SMSC)

Specifications of USB2514-HZH

• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (min): 3V
• Operating Supply Voltage (max): 3.6V
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 48
• Lead Free Status / RoHS Status: Compliant

Revision 1.1 (04-26-10)
5.2
USBDM_DN[x:1]/
USBDP_DN[x:1]/
PRT_DIS_M[x:1]
PRT_DIS_P[x:1]
PRTPWR[x:1] /
USBDM_UP
USBDP_UP
VBUS_DET
BC_EN[x]
SYMBOL
USB251x Pin Descriptions (Grouped by Function)
BUFFER
TYPE
I/O12
IO-U
IO-U
O12
IPD
USB Data
These pins connect to the upstream USB bus data signals (host, port, or
upstream hub).
Detect Upstream VBUS Power
Detects the state of Upstream VBUS power. The SMSC hub monitors
VBUS_DET to determine when to assert the internal D+ pull-up resistor which
signals a connect event.
When designing a detachable hub, this pin should be connected to VBUS on
the upstream port via a 2 to 1 voltage divider.
For self-powered applications with a permanently attached host, this pin must
be connected to 3.3 V (typically VDD33).
Hi-Speed USB Data
These pins connect to the downstream USB peripheral devices attached to
the hub’s port. To disable, pull up with a 10 K resistor to 3.3 V.
Downstream Port Disable Strap Option
If this strap is enabled by package and configuration settings (see
"Hub Configuration
negation to determine if the port is disabled.
To disable a port, pull up both PRT_DIS_M[x:1] and PRT_DIS_P[x:1] pins
corresponding to the port numbers.
USB Power Enable
Enables power to USB peripheral devices downstream.
When PRTPWR_POL pin is unavailable, the hub supports active high power
controllers only.
When PRTPWR_POL pin is available, the active signal level of the PRTPWR
pins is determined by the power polarity strapping function of the
PRTPWR_POL pin.
Battery Charging Strap Option
*This feature is only available on USB251xB/Bi.
If this strap is enabled by package and configuration settings, (see
"Hub Configuration
to determine if ports [x:1] support the battery charging protocol (and thus the
supporting external port power controllers) that would enable a device to draw
the currents per the USB battery charging specification.
BC_EN[x] = 1: Battery charging feature is supported for port x
BC_EN[x] = 0: Battery charging feature is not supported for
port x
DOWNSTREAM USB 2.0 INTERFACES
Table 5.2 USB251x Pin Descriptions
UPSTREAM USB 2.0 INTERFACES
DATASHEET
Options"), this pin will be sampled at RESET_N negation
Options"), then this pin will be sampled at RESET_N
22
DESCRIPTION
USB 2.0 Hi-Speed Hub Controller
SMSC USB251x
Table 8.1,
Table 8.1,
Datasheet