USB2228 SMSC Corporation, USB2228 Datasheet - Page 12

• Manufacturer Part Number: USB2228
• Description: (USB2227 / USB2228) 4th Generation USB2.0 Flash Media Controller
• Manufacturer: SMSC Corporation

Revision 1.91 (10-13-06)
CF_nRESET
CF_IORDY
CF_D[7:0]
CF_nCD2
CF_nCD1
CF_nIOW
SYMBOL
CF_nIOR
SM_nWP
SM_ALE
128-PIN
VTQFP
39
38
37
36
35
34
33
32
56
54
53
59
57
58
74
73
124-PIN
DQFN
B19
A19
B18
A18
B17
A17
B16
B15
A28
A27
B25
A30
A29
B27
B35
A37
SmartMedia INTERFACE
4th Generation USB2.0 Flash Media Controller with Integrated Card Power FETs
BUFFER
I/O8PD
O8PD
O8PD
TYPE
IPU
IPU
IPU
O8
O8
O8
DATASHEET
12
CF Data 7-0:
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.
IO Ready:
This pin is active high input signal.
This pin has an internally controlled weak pull-up
resistor.
CF Card Detection2:
This card detection pin is connected to the ground on
the CF device, when the CF device is inserted.
This pin has an internally controlled weak pull-up
resistor.
CF Card Detection1:
This card detection pin is connected to ground on the
CF device, when the CF device is inserted.
This pin has an internally controlled weak pull-up
resistor.
CF Hardware Reset:
This pin is an active low hardware reset signal to CF
device.
CF IO Read:
This pin is an active low read strobe signal for CF
device.
CF IO Write Strobe:
This pin is an active low write strobe signal for CF
device.
SM Write Protect:
This pin is an active low write protect signal for the SM
device.
This pin has a weak pull-down resistor that is
permanently enabled.
SM Address Strobe:
This pin is an active high Address Latch Enable signal
for the SM device.
This pin has a weak pull-down resistor that is
permanently enabled.
DESCRIPTION
SMSC USB2227/USB2228
Datasheet