USB2229-NU-02 Standard Microsystems (SMSC), USB2229-NU-02 Datasheet - Page 13

• 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
Chapter 6 Pin Descriptions
SMSC USB2229/USB2230
6.1
CF Chip Select 1
CF Chip Select 0
CF Register
CF Register
CF Register
CF Interrupt
Address 2
Address 1
Address 0
Data 15-8
IO Ready
Data7-0
NAME
CF
CF
This section provides a detailed description of each signal. The signals are arranged in functional
groups according to their associated interface.
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 before the signal name, the signal is asserted when
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” signal. 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.
PIN Descriptions
CF_D[15:8]
CF_IORDY
CF_D[7:0]
SYMBOL
CF_nCS1
CF_nCS0
CF_SA2
CF_SA1
CF_SA0
CF_IRQ
CompactFlash (In True IDE mode) INTERFACE
Table 6.1 USB2229/USB2230 Pin Descriptions
BUFFER
I/O8PD
I/O8PD
O8PU
O8PU
TYPE
IPD
IPU
O8
O8
O8
DATASHEET
13
This pin is the active low chip select 1 signal for the CF
ATA device
This pin is the active low chip select 0 signal for the task
file registers of CF ATA device in the True IDE mode.
This pin is the register select address bit 2 for the CF
ATA device.
This pin is the register select address bit 1 for the CF
ATA device
This pin is the register select address bit 0 for the CF
ATA device.
This is the active high interrupt request signal from the
CF device.
The bi-directional data signals CF_D15-CF_D8 in True
IDE mode data transfer.
In the True IDE Mode, all of task file register operation
occur on the CF_D[7:0], while the data transfer is on
CF_D[15:0].
The bi-directional data signal has an internal weak pull-
down resistor.
The bi-directional data signals CF_D7-CF_D0 in the
True IDE mode data transfer.
In the True IDE Mode, all of task file register operation
occur on the CF_D[7:0], while the data transfer is on
CF_D[15:0].
The bi-directional data signal has an internal weak pull-
down resistor.
This pin is active high input signal.
This pin has an internally controlled weak pull-up
resistor.
DESCRIPTION
Revision 1.4 (09-14-07)