USB 2.0 Hi-Speed 2-Port Hub Controller
Datasheet
Revision 1.96 (07-11-08)
12
SMSC USB2512A
DATASHEET
3.2
Buffer Type Descriptions
Table 3.4 USB2512A Buffer Type Descriptions
BUFFER
DESCRIPTION
I
Input.
IPD
Input with internal weak pull-down resistor.
IPU
Input with internal weak pull-up resistor.
IS
Input with Schmitt trigger.
O12
Output 12mA.
OD12
Open drain with 12mA sink.
I/O12
Input/Output buffer with 12mA sink and 12mA source.
I/OSD12
Open drain with Schmitt trigger and 12mA sink. Must meet I
2
C-Bus Specification
Version 2.1 requirements.
ICLKx
XTAL clock input.
OCLKx
XTAL clock output.
I-R
RBIAS.
I/O-U
Analog Input/Output Defined in USB specification.
AIO
Analog Input/Output.
