USB2250 SMSC Corporation, USB2250 Datasheet - Page 15

• Manufacturer Part Number: USB2250
• Description: Ultra Fast USB 2.0 Multi-Format Flash Media Controller
• Manufacturer: SMSC Corporation

Ultra Fast USB 2.0 Multi-Format Flash Media Controller
Datasheet
SMSC USB2250/51/59
CF Data 7-0 /
GPIO
IO Ready
CF Card
Detection1
CF Hardware
Reset
CF IO Read
CF IO Write
Strobe
CF DMA
request
CF DMA
acknowledge
SM Write
Protect
NAME
CF_nDMACK/
CF_DMARQ /
GPIO2 / RXD
CF_nRESET
GPIO[23:16]
GPIO / TXD
Table 5.1 USB2250/51/59 128-Pin VTQFP Pin Descriptions (continued)
CF_D[7:0] /
CF_IORDY
CF_nIOW
SYMBOL
(GPIO13)
SM_nWP
CF_nIOR
CF_nCD
128-PIN
VTQFP
117
119
69
67
63
61
59
88
86
85
80
58
79
72
73
47
SMART MEDIA INTERFACE
DATASHEET
BUFFER
I/O12PD
O12PD
TYPE
I/O12
I/O12
I/O12
I/O12
O12
O12
O12
O12
O12
IPU
I
I
15
DESCRIPTION
CF_D[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 the task file register
operations 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.
GPIO[23:16]: These Pins are GPIOs if
CF_INTF_EN bit of CFC_ATA_MODE CTL is
disabled and EXTENDED_GPIO bit is set in
UTIL_CONFIG1 is enabled.
This pin is active high input signal for IORDY.
This pin has an internal weak pull-up resistor that
can be controlled by:
CF_INTF_EN bit of CFC_ATA_MODE CTL
This is a GPIO designated as the Compact Flash
card detection pin.
This pin is an active low hardware reset signal to
CF device.
This pin is an active low read strobe signal for CF
device.
This pin is an active low write strobe signal for CF
device.
CF_DMARQ: This pin is the DMA request from
the device to the CF controller.
GPIO: This pin may be used either as input, edge
sensitive interrupt input, or output.
RXD: The signal can be used as input to the RXD
of UART in the device, when the TXD_RXD_SEL
bit in UTIL_CONFIG1 register is cleared to "0".
CF_nDMACK: This pin is an active low dma
acknowledge signal for CF device.
GPIO: This pin may be used either as input, edge
sensitive interrupt input, or output.
TXD: In addition, as an output, the GPIO7 can be
used as an output TXD of UART in the device,
when the GPIO2/TXD bit in UTL_CONFIG register
is set to "1"
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.
Revision 2.6 (05-08-08)