USB2229-NU-02 Standard Microsystems (SMSC), USB2229-NU-02 Datasheet - Page 19

• Manufacturer Part Number: USB2229-NU-02
• Manufacturer: Standard Microsystems (SMSC)

Specifications of USB2229-NU-02

• Operating Supply Voltage (typ): 1.8/3.3V
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 128
• Lead Free Status / RoHS Status: Compliant

5th Generation Hi-Speed USB Flash Media and IrDA Controller with Integrated Card Power FETs
Datasheet
SMSC USB2229/USB2230
Memory Address 16
GPIO6, ROMEN,
General Purpose
General Purpose
General Purpose
General Purpose
General Purpose
General Purpose
RESET input
Card Power
Card Power
Card Power
TEST Input
NAME
I/O
I/O
I/O
I/O
I/O
I/O
Or
Or
Or
GPIO6/ROMEN
CRD_PWR0
CRD_PWR1
CRD_PWR2
nTEST[1:0]
SYMBOL
GPIO10/
nRESET
GPIO11/
GPIO12
GPIO8/
GPIO7
GPIO9
/MA16
Table 6.1 USB2229/USB2230 Pin Descriptions
BUFFER
TYPE
I/O8
I/O8
I/O8
I/O8
I/O8
I/O8
I/O8
I/O8
IPU
IS
DATASHEET
I
19
This pin has an internal weak pull-up resistor that is
enabled or disabled by the state of nRESET.
The pull-up is enabled when nRESET is active.
The pull-up is disabled, when the nRESET is inactive
(some clock cycles later, after the rising edge of
nRESET).
The state of this pin is latched internally on the rising
edge of nRESET to determine if internal or external
program memory is used.
The state latched is stored in ROMEN bit of GPIO_IN1
register.
After the rising edge of nRESET, this pin may be used
as GPIO6 or RXD.
When pulled low via an external weak pull-down
resistor, an external program memory should be
connected to the memory data bus. The
USB2229/USB2230 uses this external bus for program
execution.
When this pin is left unconnected or pulled high by a
weak pull-up resistor, the USB2229/USB2230 uses the
internal ROM for program execution.
For Bank Switching support, MA16 addresses the
external 128k memory above the standard 64k range
(the upper 64k is mapped into the 64k addressable
ROM space)
This pin may be used either as input, edge sensitive
interrupt input, or output.
GPIO: This pin may be used either as input, edge
sensitive interrupt input, or output.
CRD_PWR: Card Power drive of 3.3V @ 100mA.
This pin may be used either as input, edge sensitive
interrupt input, or output.
GPIO: This pin may be used either as input, edge
sensitive interrupt input, or output.
CRD_PWR: Card Power drive of 3.3V @ 100mA.
GPIO: This pin may be used either as input, edge
sensitive interrupt input, or output.
CRD_PWR: Card Power drive of 3.3V @ 200mA.
These pins may be used either as input, or output.
This active low signal is used by the system to reset the
chip. The active low pulse should be at least 1μs wide.
These signals are used for testing the chip. User should
normally tie them high externally, if the test function is
not used.
DESCRIPTION
Revision 1.4 (09-14-07)