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RB5C396 View Datasheet(PDF) - RICOH Co.,Ltd.

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RB5C396 Datasheet PDF : 93 Pages
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RF5C296/RF5C396L/RB5C396/RF5C396
1.9 Card Status Interrupt Configuration Register
Index : 05h
Default value : 0000 0000b
Read & Write
bit7 to bit4 : These bits select the redirection of the card status change interrupt if the interrupt is not selected to
INTR# pin.
INTR# Enable bit
bit3
bit2
bit1
bit0
IRQn Selection
0
0
0
0
0
IRQ not Selected
0
0
0
1
1
IRQ3 Enabled
0
0
1
0
0
IRQ4 Enabled
0
0
1
0
1
IRQ5 Enabled
0
0
1
1
1
IRQ7 Enabled
0
1
0
0
1
IRQ9 Enabled
0
1
0
1
0
IRQ10 Enabled
0
1
0
1
1
IRQ11 Enabled
0
1
1
0
0
IRQ12 Enabled
0
1
1
1
0
IRQ14 Enabled
0
1
1
1
1
IRQ15 Enabled
1
´
´
´
´
redirected to INTR#
bit3
: Card Detect Enable. Setting bit to “1” enables a card status change interrupt when a change has been
detected on CD1# or CD2# signals.
bit2
: Ready Enable. Setting this bit to “1” enables a card status change interrupt when a “L” to “H” transition
has been detected on READY/BUSY# signals. This bit is ignored when interface is configured for I/O
card.
bit1
: Battery Warning Enable. Setting this bit to “1” enables a card status change interrupt when battery
warning condition has been detected. This bit is ignored when interface is configured for I/O card.
bit0
: Battery Dead Enable. For memory cards, Setting this bit to “1” enables a card status change interrupt
when a battery dead condition has been detected. For I/O cards, a card status change interrupt will be
generated if the STSCHG#/RI# has been pulled “L” assuming Ring Indicate Enable Bit (bit7) in
Interrupt and General Control Register is set to “0”.
35
 

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