USB2241 SMSC Corporation, USB2241 Datasheet - Page 16

• Manufacturer Part Number: USB2241
• Description: (USB2240 / USB2241) Ultra Fast USB 2.0 Multi-Format Flash Media Controller
• Manufacturer: SMSC Corporation

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Revision 2.6 (05-08-08)
General
Purpose I/O
General
Purpose I/O
General
Purpose I/O
General
Purpose I/O
RESET Input
TEST Input
+1.8V Core
power
3.3V Power &
Regulator
Input.
3.3V Analog
Power
NAME
GPIO2 /
RXD /
SDA
GPIO4
GPIO7 /
TXD /
SCK /
MS_SKT_SEL
GPIO10
(CRD_PWR)
nRESET
TEST
VDD18
VDD33
VDDA33
Table 5.1 USB2240/USB2241 36-Pin QFN Pin Descriptions (continued)
SYMBOL
27
29
31
21
18
28
13
6
14
22
36
36-PIN
QFN
DIGITAL / ANALOG / POWER
I/O12
I
I/O12
I/O12
I/O12
O12
O12
I
I/O200
I
IS
DATASHEET
BUFFER
TYPE
16
GPIO: This pin may be used either as input, edge
SDA: This is the data pin when used with an
GPIO: This pin may be used either as input, edge
TXD: In addition, as an output, the GPIO7 can be
SCK: This is the clock output when used with an
GPIO: This pin may be used either as input, edge
All VDD18 pins must be connected together on the
3.3V Analog Power
sensitive interrupt input, or output.
RXD: In addition to the above, the signal can be
used as input to the RXD of UART in the device,
when the TXD_RXD_SEL bit in UTIL_CONFIG1
register is cleared to "0".
external serial EEPROM.
This pin may be used either as input, edge sensitive
interrupt input, or output.
For the USB2240 only, this pin can be used as the
xD card detection pin.
sensitive interrupt input, or output.
used as an output TXD of UART in the device, when
the GPIO2/TXD bit in UTL_CONFIG register is set
to "1"
external EEPROM.
MS_SKT_SEL: On the positive edge of nRESET,
this pin is sampled to determined the Memory Stick
socket size.
1 = 8 bit
0 = 4 bit
sensitive interrupt input, or output.
CRD_PWR: Card Power drive of 3.3V @ either
100mA or 200mA.
This active low signal is used by the system to reset
the chip. The active low pulse should be at least 1μs
wide.
This signal is used for testing the chip. User should
normally tie this pin low externally, if the test function
is not used.
circuit board.
+1.8V core power. This pin must have a 1.0
greater) ±20% (ESR <0.1Ω) capacitor to VSS.
3.3V Power & Regulator Input.
Ultra Fast USB 2.0 Multi-Format Flash Media Controller
DESCRIPTION
SMSC USB2240/USB2241
Datasheet
μ
F (or