USB2244-AEZG-05 SMSC, USB2244-AEZG-05 Datasheet - Page 21

• Manufacturer Part Number: USB2244-AEZG-05
• Description: USB Interface IC Ultra Fast USB 2.0 Flash Media CTRL
• Manufacturer: SMSC

Specifications of USB2244-AEZG-05

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Ultra Fast USB 2.0 Multi-Format, SD/MMC, and MS Flash Media Controllers
Datasheet
SMSC USB224x
MS_D[7:0]
MS_BS
MS_SCLK
GPIO12
(MS_INS)
SD_D[7:0]
SD_CLK
SD_CMD
SYMBOL
SECURE DIGITAL (SD) / MULTIMEDIACARD (MMC) INTERFACE
Table 6.1 USB224x 36-PiN QFN Pin Descriptions (continued)
10
20
23
25
11
7
8
4
5
9
23
20
10
30
24
11
8
7
4
5
9
MEMORY STICK (MS) INTERFACE
10
20
23
25
11
7
8
4
5
9
I/O12PD
O12
O12
IPU
I/O12PU
O12
I/O12PU
BUFFER
TYPE
DATASHEET
21
MS System Data In/Out
These pins are the bi-directional data signals for the
MS device. MS_D0, MS_D2, and MS_D3 have weak
pull-down resistors.
In serial mode, the most significant bit (MSB) of each
byte is transmitted first by either MSC or MS device on
MS_D0.
In parallel mode, MS_D1 has a pull-down resistor,
otherwise it is disabled.
In 4- or 8-bit parallel mode, there is a weak pull-down
resistor on all MS_D7 - 0 signals.
MS Bus State
This pin is connected to the bus state (BS) pin of the
MS device. It is used to control the bus states 0, 1, 2
and 3 (BS0, BS1, BS2 and BS3) of the MS device.
MS System CLK
This pin is an output clock signal to the MS device.
The clock frequency is software configurable.
MS Card Insertion GPIO
This is a GPIO designated by the default firmware as
the Memory Stick card detection pin.
SD Data
The pins are bi-directional data signals SD_D0 -
SD_D7 and have weak pull-up resistors.
SD Clock
This is an output clock signal to SD/MMC device.
The clock frequency is software configurable.
SD Command
This is a bi-directional signal that connects to the CMD
signal of the SD/MMC device and has a weak internal
pull-up resistor.
DESCRIPTION
Revision 2.0 (10-14-09)