RB5C396 Ricoh Corporation, RB5C396 Datasheet - Page 38

• Manufacturer Part Number: RB5C396
• Description: PC Card Controller Compliant With Pcmcia 2.1/jeida 4.2
• Manufacturer: Ricoh Corporation

34
1.8 Interrupt and General Control Register
Index : 03h
bit7
bit6
bit5
bit4
bit3 to bit0 : IRQn level selection (I/O card only).
RF5C296/RF5C396L/RB5C396/RF5C396
: Ring Indicate Enable.
: PC Card Reset#. Setting this bit to “0” activates the Reset signal to the PC Card. The Reset signal will be
: PC Card type. Setting this bit to “1” selects an I/O card. Setting this bit to “0” selects a memory card.
: INTR# Enable. Setting bit to “1” enables the card status change interrupt on the INTR# signal. If this bit
active until this bit is set to “1”.
Setting this bit to “0” for I/O card, the STSCHG#/RI# signal from the I/O card is used as the status
change signal STSCHG#. The current status of the signal is then available to the read from the Interface
Status Register and this signal can be configured as a source for the card status change interrupt.
Setting this bit to “1”, STSCHG#/RI# signal from the I/O card is used as a ring indicator signal and is
passed through to the RI_OUT# pin. For memory PC Card, bit has no function.
is set to “0”, the card status change interrupt is steered to one of the IRQn lines according bits7 through
4 in the card status change interrupt configuration register.
Default value : 0000 0000b
bit3
0
0
0
0
0
1
1
1
1
1
1
bit2
0
0
1
1
0
0
0
1
1
1
1
Read & Write
bit1
0
1
0
0
1
0
1
1
0
1
1
bit0
0
1
0
1
1
1
0
1
0
0
1
IRQ not Selected
IRQn Selection
IRQ10 Enabled
IRQ11 Enabled
IRQ12 Enabled
IRQ14 Enabled
IRQ15 Enabled
IRQ3 Enabled
IRQ4 Enabled
IRQ5 Enabled
IRQ7 Enabled
IRQ9 Enabled