Ricoh R5C841 Manual Do Utilizador
R5C841 PCI-CardBus/IEEE 1394/SD Card/Memory Stick/xD/ExpressCard Data Sheet
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. 1.10
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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.
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.
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.
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.
(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.
(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.
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.
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.
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.
supply for the Memory Stick.
MSLED# MDIO06
OUT
Memory Stick LED Control : This signal indicates an access state to the
Memory Stick.
Memory Stick.