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IT8228E V0.2
11
IT8228E Pin Descriptions
Table 5-3. Pin Description of Smart Media Interface Signals [cont’d]
Symbol
Attribute
Power
SMWP#/
PME#/
GP40
DIOD16
The first function of this pin is Smart Media Write
Protected #.
The second function of this pin is the power
management event #. It supports the PCI PME#
interface. This signal allows the peripheral to request the
system to wake up from the D3 (cold) state.
The third function of this pin is the General Purpose I/O
Port 4 Bit 0.
The function configuration of this pin is determined by
programming the software configuration registers.
SMCE#/
SCPSNT#/
GP41
DIOD16
The first function of this pin is Smart Media Card Enable
#.
The second function of this pin is Smart Card Reader
Card Present Detect #.
The third function of this pin is the General Purpose I/O
Port 4 Bit 1.
The function configuration of this pin is determined by
programming the software configuration registers.
SMCLE/
SCIO/
GP42
DIOD16
The first function of this pin is Smart Media Command
Latch Enable.
The second function of this pin is Smart Card Reader
Data I/O.
The third function of this pin is the General Purpose I/O
Port 4 Bit 2.
The function configuration of this pin is determined by
programming the software configuration registers.
SMALE/
SCRST/
GP43
DIOD16
The first function of this pin is Smart Media Address
Latch Enable.
The second function of this pin is Smart Card Reader
Reset.
The third function of this pin is the General Purpose I/O
Port 4 Bit 3.
The function configuration of this pin is determined by
programming the software configuration registers.
SMBSY#/
SCPWR#/
GP44
DIOD08
The first function of this pin is Smart Media Busy #.
The second function of this pin is Smart Card Reader
Power FET Control #.
The third function of this pin is the General Purpose I/O
Port 4 Bit 4.
The function configuration of this pin is determined by
programming the software configuration registers.
Pin(s) No.
23
Description
DO16/
DOD16/
VCC
Smart Media Write Protected # / Power Management Event #
/ General Purpose I/O 40.
24
DO16/
DI/
VCC
Smart Media Card Enable # / Smart Card Present Detect # /
General Purpose I/O 41.
25
DO16/
DIOD16/
VCC
Smart Media Command Latch Enable / Smart Card Data I/O /
General Purpose I/O 42.
26
DO16/
DOD16/
VCC
Smart Media Address Latch Enable / Smart Card Reset /
General Purpose I/O 43.
27
DI/
DOD08/
VCC
Smart Media Busy # / Smart Card Power FET Control # /
General Purpose I/O 44.