Datasheet

USB 2.0 Hi-Speed Hub Controller
Datasheet
SMSC USB251xB/xBi 63 Revision 2.2 (02-17-12)
DATASHEET
Datasheet Revision History
Customer Revision History
REVISION LEVEL & DATE SECTION/FIGURE/ENTRY CORRECTION
Rev. 2.2 (02-17-12) Cover Updated clock bullet to remove reference to
48MHz clock support.
Section 1.1: Configurable
Features on page 8
Updated bulleted lists. USB signal drive strength,
USB differential pair pin location and downstream
port power control / over-current detection items
moved from first (strap-configurable) bulleted list
to the second (EEPROM-configurable) bulleted
list. Added enabling of battery charging to the first
bulleted list.
Section 3.1:
Pin
Configurations on page 11
Clarified introductory sentence.
Table 3.3:
USB251xB/xBi Pin
Descriptions on page 19
Updated VBUS_DET buffer type to “I” and
changed description to: “For self-powered
applications with a permanently attached host,
this pin must be connected to a dedicated host
control output, or connected to the 3.3 V domain
that powers the host (typically VDD33).”
Table 3.3:
USB251xB/xBi Pin
Descriptions on page 19
Updated CRFILT and PLLFILT pin descriptions.
Section 7.1:
Oscillator/Crystal
on page 56
Removed redundant sentence: “External Clock:
50% duty cycle ± 10%, 24/48 MHz ± 350 ppm,
jitter
< 100 ps rms”. This information is provided in
Section 7.2:
External Clock on page 57.
Chapter 7:
AC Specifications Removed ceramic resonator information.
Section 7.2:
External Clock Replaced “1.8 V CMOS Logic” with “1.2 V CMOS
Logic”. Updated XTALOUT description.
Section 3.3:
Pin Descriptions
(Grouped by Function)
Updated CRFILT and PLLFILT pin descriptions.
Cover, Package, All Removed the 49-BGA option.
Order Code Page Changed ordering codes for non-industrial
USB2513B and USB2514B. Last character was
changed from “G” to “C”.
Front page Removed support for ceramic resonator.
Rev. 2.1 (02/24/11) Section 6.1 and 6.2, DC
Parameters
The 1.2V supply information was added and the
graph that includes both 3.3 and 1.2 V rise time
was added for 49-BGA.
Rev. 2.1 (02/24/11) All Added the 49-BGA option.
Rev. 2.1 (02/22/11) Section 6.2.1, Package
Thermal Specifications
Added Max Power Supported = (TJ, max.spec. - Tamb)/ ΘJA
Rev. 2.0 (10/01/10) All General refresh, corrected grammatical errors
and unified tone.