RB5C396 Ricoh Corporation, RB5C396 Datasheet - Page 59

Manufacturer Part Number

RB5C396

Description

PC Card Controller Compliant With Pcmcia 2.1/jeida 4.2

Manufacturer

Ricoh Corporation

Datasheet

1.RB5C396.pdf (93 pages)

mismatching between the ISA bus and the PC card bus.

added to the settings of the Card I/O Offset Address n Low/High Byte Registers (Index : 36h (Low-byte Window 0),

37h (High-byte Window 0), 38h (Low-byte Window 1), and 39h (High-byte Window 1)) to form two's complement

numbers representing I/O addresses on the PC card bus.

setting to ensure I/O address matching between the ISA bus and the PC card bus in the same manner as for the

RF5C296.

• I/O Address Mapping by RF5C296

The RF5C296 provides I/O address mapping as shown in the figure below :

In the above figure, addresses “03E0h” and “03E1h” form an internal address space for use in internal decoding.

On the other hand, the RF5C396 is capable of I/O address mapping in such a manner as to ensure I/O address

The above-described settings of the I/O Address n Start/Stop Low/High Byte Registers for the RF5C296 can be

The Card I/O Offset Address n Low/High Byte Registers, which always default to “00h”, may be omitted from

0000h

aaaah

03E0h

bbbbh

03E1h

ddddh

FFFFh

cccch

I/O address on ISA bus

I/O WINDOW 0

I/O WINDOW 1

I/O address window for access to internal registers

(03E0h and 03e1h)(for use in internal decoding)