USB 2.0 Hi-Speed Hub Controller
Datasheet
Table 5.3 Buffer Type Descriptions (continued)
BUFFER
DESCRIPTION
I/O12
Input/Output buffer with 12 mA sink and 12 mA source.
I/OSD12
Open drain with Schmitt trigger and 12 mA sink. Meets the I2C-Bus specification,
version 2.1, requirements.
ICLKx
OCLKx
I-R
XTAL clock input.
XTAL clock output.
RBIAS.
I/O-U
Analog Input/Output defined in USB specification.
Revision 1.0 (3-11-09)
28
SMSC USB251x
DATASHEET