RB5C396 Ricoh Corporation, RB5C396 Datasheet - Page 26

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

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6. Internal Register Access
rect indexing scheme. Only two I/O addresses such as (3E1h) and (3E0h) are used to access all control registers.
CS#. When RESETDRV falls, if the level of INTR# pin is “H” (“L”), internal decode mode (external decode mode)
can be selected.
as not to affect normal operation.
register access (the CS# pin should be caused to transition to high level only in the Power Down Mode).
number depending on the status of the SPKROUT# pin for the RF5C396 or the RI_OUT# pin for the RF5C296 at the
falling edge of the RESETDRV pin signal. For the RF5C296, in particular, the Index Register has bit6 (Slot bit) for
indicating a device number depending on the status of the SPKROUT# pin at the falling edge of the RESETDRV pin
signal.
index range as shown in the tables in “7. Plural (Three) Slot Systems” on the next page. Note that these pins also
require their status control for connecting a single unit of the RF5C296 or the RF5C396.
RF5C296/RF5C396L/RB5C396/RF5C396
“0”: Device#0
“1”: Device#1
All of the control registers of the RF5C296/RF5C396 are 8bit width registers and can be accessed using an indi-
RF5C296/RF5C396 has the external decode mode. In this mode, I/O address is decoded outside and input to
Consequently, these operations can be enabled by externally pulling up or down the INTR# pin to such a degree
In the Internal Decode Mode, too, the CS# pin should be caused to transition to low level at the time of internal
The Index Register has the bit settings shown below :
There are 56 control registers provided for each PC card slot. The Index Register has bit7 for indicating a device
Both the SPKROUT# and RI_OUT# pins operate in the same manner as the INTR# pin described above.
The status of the SPKROUT# pin (for the RF5C396) or the RI_OUT# pin (for the RF5C296) corresponds to the
bit7
“0”: Slot#0
“1”: Slot#1
bit6
bit5
Index Register (3E0h)
bit4
bit3
Register Index
bit2
bit1
bit0