10 small card interfac signals – Ricoh R5C841 User Manual
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R5C841 PCI-CardBus/IEEE 1394/SD Card/Memory Stick/xD/ExpressCard Data Sheet
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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.