Ricoh R5C841 - Manual (Page 23)

R5C841 PCI-CardBus/IEEE 1394/SD Card/Memory Stick/xD/ExpressCard Data Sheet
12345  2004 R EV . 1.10 3-18
3.3.10 Small Card Interface signals
SD Card
Pin Name
MDIO Pin
Name
Type Description
SD Card Control Pin Descriptions
SDCDAT0 MDIO10 I/O
SDCDAT1 MDIO11 I/O
SDCDAT2 MDIO12 I/O
SDCDAT3 MDIO13 I/O
SD Data [3:0] : SD Card 4bit data bus signals.
SDCCMD MDIO08 I/O SD Command : SD Card Command signal.
SDCCLK MDIO09 OUT SD Clock : SD Card Clock signal.
SDWP# MDIO03 IN SD Write Protect : This signal indicates the state of SD card’s write protect
switch. This pin is connected to a reserved pin of the SD card socket.
SDCD# MDIO00 IN SD Card Detect : This signal indicates whether the SD card is inserted to a
socket. This pin is connected to a reserved pin of the SD card socket.
SDEXTCK MDIO07 IN SD External Clock : This signal must be connected to GND because the
R5C841 does not support SDEXTCK for the SD Card.
SDPWR0 MDIO04 OUT SD Card Power0 Control : This signal is provided to control the power supply
(3.3V) for an SD card.
SDPWR1 MDIO05 OUT SD Card Power1 Control : This signal is provided to control the power supply
(1.8V) for an SD card. R5C841does not support this signal.
SDLED# MDIO06 OUT SD Card LED Control : This signal indicates an access state to the SD card.
Memory Stick
Pin Name
MDIO Pin
Name
Type Description
Memory Stick Control Pin Descriptions
MSCDAT0 MDIO10 I/O
MSCDAT1 MDIO11 I/O
MSCDAT2 MDIO12 I/O
MSCDAT3 MDIO13 I/O
Memory Stick Data [3:0] : Memory Stick Data signals. Normally, MSCDAT0 only
is used.
MSBS MDIO08 OUT Memory Stick Bus State : Memory Stick Bus State signal.
MSCCLK MDIO09 OUT Memory Stick Clock : Memory Stick Clock signal.
MSCD# MDIO01 IN Memory Stick Card Detect : This signal indicates whether the Memory Stick is
inserted to a socket. This pin is connected to the INS signal of Memory Stick.
MSEXTCK MDIO07 IN Memory Stick External Clock : This signal is input to the Memory Stick block.
This clock supports 0 - 40MHz. If the internal PCICLK is used, this signal can be
connected to GND.
MSPWR MDIO04 OUT Memory Stick Power Control : This signal is provided to control the power
supply for the Memory Stick.
MSLED# MDIO06 OUT Memory Stick LED Control : This signal indicates an access state to the
Memory Stick.