USB2240 SMSC Corporation, USB2240 Datasheet - Page 17

• Manufacturer Part Number: USB2240
• Description: Ultra Fast USB 2.0 Multi-Format Flash Media Controller
• Manufacturer: SMSC Corporation

Ultra Fast USB 2.0 Multi-Format Flash Media Controller
Datasheet
SMSC USB2240/USB2241
5.2
1.8V PLL
Power
Ground
I
IPU
IS
I/O12
I/O200
I/O12PD
I/O12PU
O12
O12PU
O12PD
ICLKx
OCLKx
I/O-U
I-R
NAME
BUFFER
Buffer Type Descriptions
VDD18PLL
VSS
Table 5.1 USB2240/USB2241 36-Pin QFN Pin Descriptions (continued)
SYMBOL
Input.
Input with internal weak pull-up resistor.
Input with Schmitt trigger.
Input/Output buffer with 12mA sink and 12mA source.
Input/Output buffer 12mA with FET disabled, 100/200mA source only with FET enabled.
Input/Output buffer with 12mA sink and 12mA source, with an internal weak pull-down
resistor.
Input/Output buffer with 12mA sink and 12mA source with a pull-up resistor.
Output buffer with 12mA source.
Output buffer with 12mA sink and 12mA source, with a pull-up resistor.
Output buffer with 12mA sink and 12mA source, with a pull-down resistor.
XTAL clock input.
XTAL clock output.
Analog Input/Output Defined in USB specification.
RBIAS.
34
SLUG
36-PIN
QFN
Table 5.2 Buffer Type Descriptions
DATASHEET
BUFFER
TYPE
17
This pin is the 1.8V Power for the PLL.
+1.8V Filtered analog power for internal PLL. This
pin must have a 1.0
<0.1Ω) capacitor to VSS.
Ground Reference
DESCRIPTION
DESCRIPTION
μ
F(or greater) ±20% (ESR
Revision 2.6 (05-08-08)