EVB-USB2240-IND SMSC, EVB-USB2240-IND Datasheet - Page 19
![EVALUATION BOARD USB2241-AEZG](/photos/9/3/90399/evb-usb2240-ind_sml.jpg)
EVB-USB2240-IND
Manufacturer Part Number
EVB-USB2240-IND
Description
EVALUATION BOARD USB2241-AEZG
Manufacturer
SMSC
Specifications of EVB-USB2240-IND
Main Purpose
Memory, SD/MMC
Embedded
No
Utilized Ic / Part
USB2241
Primary Attributes
Read and Write to Over 22 Flash Media Formats from xD, MS, SD, and MMC
Secondary Attributes
Socket for External EEPROM Expansion, USB Power with 3.3 V Regulator
Interface Type
USB
Product
Interface Modules
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With/related Products
USB2240
Other names
638-1078
Ultra Fast USB 2.0 Multi-Format, SD/MMC, and MS Flash Media Controllers
Datasheet
Chapter 6 Pin Descriptions
SMSC USB224x
6.1
xD_D[7:0]
xD_nWP
xD_ALE
xD_CLE
SYMBOL
This section provides a detailed description of each signal. The signals are arranged in functional
groups according to their associated interface. The pin descriptions are applied when using the internal
default firmware and can be referenced in
reference
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 in the signal name, the signal is asserted 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” signals. 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.
USB224x 36-Pin QFN Pin Descriptions
xD-PICTURE CARD (xD) INTERFACE (APPLIES ONLY TO USB2240/USB2240i)
20
23
25
30
10
11
4
5
7
8
9
Chapter 2, "Acronyms," on page 7
Table 6.1 USB224x 36-PiN QFN Pin Descriptions
I/O12PD
O12PD
O12PD
O12PD
BUFFER
TYPE
DATASHEET
19
for a list of the acronyms used.
Chapter 7, "Pin Configurations," on page
xD Data
These bi-directional data signals have weak internal
pull-down resistors.
xD Write Protect
This pin is an active low write protect signal for the xD
device and has a weak pull-down resistor that is
permanently enabled.
xD Address Strobe
This pin is an active high Address Latch Enable signal
for the xD device and has a weak pull-down resistor
that is permanently enabled.
xD Command Strobe
This pin is an active high Command Latch Enable
signal for the xD device and has a weak pull-down
resistor that is permanently enabled.
DESCRIPTION
Revision 2.0 (10-14-09)
25. Please