RB5C396 Ricoh Corporation, RB5C396 Datasheet - Page 29

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

PCMCIA-ATA mode. In PCMCIA-ATA mode, if the bit1 of the Mode Control Register is set to “1”, the SPKR# input
works as an LED input and IRQ12 works as an open drain LED output. At this time SPKROUT# will become inac-
tive.
table in the PCMCIA-ATA Mode on the previous page). In the PCMCIA-ATA Mode, the output CA21 to CA25 pin
signals assume the values thus specified by bits2 to 6.
When set to “1”, bit7 is disabled during reading from an I/O address of 3F7h and 377h on the system data bus.
9. DMA Mode
DMA transfer between the ISA system memory and the I/O card is available in the following two types :
1) DMA transfer between the ISA system memory and the I/O card
2) DMA transfer between memory in the I/O card and the I/O port via the system data bus.
DMA devices via the PC card slots. Setting bit1 of Mode Control Register 3 to “1” enables DMA mode. The DMA
data will be transferred to/from DMA capable PC Card with the ISA bus as a DMA master.
IRQ10 will work as DREQ output, IRQ11 (or IRQ15) will work as TC input.
ting bit7 and bit6 of Mode Control Register 2.
377h, 3F7h Disable
Only one slot at a time should be enabled for DMA transfer. And DMA transfer to/from DMA capable PC Card
may be 8 or 16bit as shown in the bus sizing table of page 21.
(in I/O Read)
Setting the bit0 of the Mode Control Register 1 (Index=1Fh) to “1” configures the corresponding card slot to the
Bits2 to 6 can be set to specify the values of the CA21 to CA25 pin signals (marked with “
Bit7 can be set to prevent any conflict between the system floppy disk signal and the card interface signals.
RF5C296/RF5C396 provide the DMA Mode for supporting interfacing with external floppy disk units or other
On the DMA mode, some of RF5C296/RF5C396 signal pins will be redefined. IRQ9 will work as DACK# input,
DREQ from the PC Card can be assigned to one of three PCMCIA inputs (IOIS16#, SPKR# or INPACK#) by set-
bit7
ISA bus
bit6
A25
DACK#
DREQ
TC
bit5
A24
Mode Control Register 1 (Index=1Fh)
IRQ 10
IRQ 9
IRQ 11(or15)
DMA made configuration
RF5C296/FR5C396
bit4
A23
Notice
IOIS 16#
SPKR#
or INPACK#
RF5C296/RF5C396L/RB5C396/RF5C396
REG#
bit3
A22
DACK#
DREQ
bit2
A21
IOIS 16# ,
SPKR#,
or INPACK#
REG#
LED Enable
PC card
*
bit1
” in the pin definition
ATA Mode
PCMCIA-
bit0
25