Ricoh R5C841 Manual Do Utilizador

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2004 R

EV

. 1.10 

3-19 

 

xD Picture Card 

xD Picture Card Control Pin Descriptions 

XDCDAT0 MDIO10 I/O 

XDCDAT1 MDIO11 I/O 

XDCDAT2 MDIO12 I/O 

XDCDAT3 MDIO13 I/O 

XDCDAT4 MDIO14 I/O 

XDCDAT5 MDIO15 I/O 

XDCDAT6 MDIO16 I/O 

XDCDAT7 MDIO17 I/O 

xD Picture CardData [7:0] : xD Picture Card Data bus signals. 

XDCLE MDIO18 

OUT 

xD Picture Card CLE : xD Picture Card Command Latch Enable signal. 

XDALE MDIO19 

OUT 

xD Picture Card ALE : xD Picture Card Address Latch Enable signal. 

XDCD0# MDIO00 

XDCD1# MDIO01 

IN 

xD Picture Card Detect : These signals indicate a detection of the xD Picture 
Card when two signals are set to ‘Low’ by insertion of xD Picture Card.   

XDWP# MDIO05 

OUT 

xD Picture Card Write Protect : This signal indicates the state of xD Picture 
Card’s write protect.  This pin is connected to the -WP signal of the xD Picture 
Card. 

XDPWR MDIO04 

OUT 

xD Picture Card Power Control : This signal is provided to control the power 
supply for the xD Picture Card. 

XDR/B# MDIO03 

IN 

xD Picture Card R/B : xD Picture Card Ready/Busy signal. When this signal is 
low, xD Picture Card is busy. 

XDLED# MDIO06 

OUT 

xD Picture Card LED Control: This signal indicates an access state to the xD 
Picture Card. 

XDWE# MDIO08 

OUT 

xD Picture Card Write Enable: xD Picture Card  Write Enable signal. 

XDCE# MDIO02 

OUT 

xD Picture Card Enable: xD Picture Card  Enable signal. 

XDRE# MDIO09 

OUT 

xD Picture Card Read Enable: xD Picture Card  Read Enable signal.