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USB2512B-AEZG 参数 Datasheet PDF下载

USB2512B-AEZG图片预览
型号: USB2512B-AEZG
PDF下载: 下载PDF文件 查看货源
内容描述: USB 2.0高速集线器控制器 [USB 2.0 Hi-Speed Hub Controller]
分类和应用: 外围集成电路控制器PC时钟
文件页数/大小: 72 页 / 1689 K
品牌: SMSC [ SMSC CORPORATION ]
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USB 2.0 Hi-Speed Hub Controller  
Datasheet  
Chapter 5 Pin Descriptions  
This chapter is organized by a set of pin configurations (organized by package type) followed by a  
corresponding pin list organized alphabetically. A comprehensive and detailed description list of each  
signal (named in the pin list) is organized by function in Table 5.2, “USB251x Pin Descriptions,” on  
page 22. Please refer to Table 5.3, “Buffer Type Descriptions,” on page 27 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.  
5.1  
Pin Configurations and Lists (Organized by Package Type)  
SUSP_IND / LOCAL_PWR / NON_REM[0]  
NC  
28  
29  
30  
31  
32  
33  
34  
35  
36  
18  
17  
16  
15  
14  
13  
12  
11  
10  
VDD33  
USBDM_UP  
USBDP_UP  
XTALOUT  
XTALIN / CLKIN  
PLLFILT  
OCS_N[2]  
PRTPWR[2] / BC_EN[2]*  
VDD33  
SMSC  
USB2512/12A/12B  
USB2512i/12Ai/12Bi  
(Top View QFN-36)  
Ground Pad  
(must be connected to VSS)  
CRFILT  
OCS_N[1]  
PRTPWR[1] / BC_EN[1]*  
TEST  
RBIAS  
VDD33  
VDD33  
Indicates pins on the bottom of the device.  
Figure 5.1 2-Port 36-Pin QFN  
Note: *Battery charging enable (BC_EN) is only available in the USB251xB/Bi.  
Revision 1.0 (3-11-09)  
12  
SMSC USB251x  
DATASHEET  
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