USB2412 Ver la hoja de datos (PDF) - SMSC -> Microchip
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USB2412 Datasheet PDF : 27 Pages
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Chapter 2 Pin Descriptions
2-Port USB 2.0 Hi-Speed Hub Controller
Datasheet
2.1
This chapter is organized by a set of pin configurations followed by a corresponding pin list organized
by function according to their associated interface. A detailed description list of each signal (named in
the pin list) is organized by function in Table 2.2, “USB2412 Pin Descriptions,” on page 10. Refer to
Table 2.3, “Buffer Type Descriptions,” on page 12 for a list of buffer types.
The “N” symbol in the signal name indicates that the active, or asserted, state occurs when the signal
is at a low voltage level. When “N” is not present after the signal name, the signal is asserted when it
is at the high voltage level.
The terms assertion and negation are used exclusively. This is done to avoid confusion when working
with a mixture of “active low” and “active high” signals. The term assert, or assertion, indicates that a
signal is active, independent of whether that level is represented by a high or low voltage. The term
negate, or negation, indicates that a signal is inactive.
Pin Configuration
USBDP_UP
XTALOUT
XTALIN/CLKIN
PLLFILT
RBIAS
VDD33
USBDM_DN1
22
14
23
13
24
SMSC
12
25
USB2412
11
26 (Top View QFN-28) 10
27
9
28
Ground Pad
8
(must be connected to VSS)
VDD33
NON_REM1
OCS_N2
PRTPWR2
VDD33
CRFILT
OCS_N1
Revision 1.3 (12-27-11)
Indicates pins on the bottom of the device.
Figure 2.1 USB2412 28-Pin QFN
8
DATASHEET
SMSC USB2412
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