USB2240I-AEZG-XX Standard Microsystems (SMSC), USB2240I-AEZG-XX Datasheet - Page 22

• Manufacturer Part Number: USB2240I-AEZG-XX
• Manufacturer: Standard Microsystems (SMSC)

Specifications of USB2240I-AEZG-XX

• Lead Free Status / RoHS Status: Compliant

Revision 2.0 (10-14-09)
GPIO6
(SD_WP)
GPIO15
(SD_nCD)
USB+
USB-
RBIAS
XTAL1 (CLKIN)
XTAL2
VDDA33
VDD18PLL
GPIO1 (LED)
SYMBOL
Table 6.1 USB224x 36-PiN QFN Pin Descriptions (continued)
30
26
35
33
32
36
34
2
3
1
I/O12
I/O12
I/O-U
I-R
ICLKx
OCLKx
I/O12
BUFFER
USB INTERFACE
Ultra Fast USB 2.0 Multi-Format, SD/MMC, and MS Flash Media Controllers
TYPE
DATASHEET
MISC
22
General Purpose I/O (GPIO): This pin may be used
SD Write Protect Detection GPIO
This is a GPIO designated by the default firmware as
the Secure Digital card mechanical write protect
detection pin.
SD Card Detect GPIO
This is a GPIO designated by the default firmware as
the Secure Digital card detection pin.
USB Bus Data
These pins connect to the USB bus data signals.
USB Transceiver Bias
A 12.0 kΩ, ±1.0% resistor is attached from VSS to this
pin in order to set the transceiver's internal bias
currents.
24 MHz Crystal (External clock input)
This pin can be connected to one terminal of the
crystal or can be connected to an external 24 MHz
clock when a crystal is not used.
24 MHz Crystal
This is the other terminal of the crystal, or it is left open
when an external clock source is used to drive
XTAL1(CLKIN). It may not be used to drive any
external circuitry other than the crystal circuit.
3.3 V Analog Power
1.8 V PLL Power
+1.8 V Filtered analog power for internal PLL. This pin
must have a 1.0 μF(or greater) ±20% (ESR <0.1 Ω)
capacitor to VSS.
either as input, edge sensitive interrupt input, or
output. Custom firmware is required to activate this
function.
LED: GPIO1 can be used as an LED output.
DESCRIPTION
SMSC USB224x
Datasheet