RB5C396 Ricoh Corporation, RB5C396 Datasheet - Page 62

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

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attribute memory, which can be selected by the Card Memory Offset Address n High/Low Byte Registers.
as PC card information, respectively. During access to the attribute memory, the REG# pin signal is held at “L”.
The RF5C296 and RF5C396 provide memory address mapping as shown in the figure below :
Mapping Start High/Low Byte Registers, addresses “(bbbFFF)h” and “(dddFFF)h” in the System Memory Address
n Mapping Stop High/Low Byte Registers, and addresses “(pppp000)h” and “(qqqq000)h” in the Card Memory
Offset Address n High/Low Byte Registers.
RF5C296/RF5C396L/RB5C396/RF5C396
Particularly, on the PC card bus, there are two types of memory available : the common memory and the
The common memory and the attribute memory are used mainly for ordinary access and for storage of such data
In the above figure, addresses “(aaa000)h” and “(ccc000)h” can be set in the System Memory Address n
(bbbFFF)h
(dddFFF)h
(aaa000)h
(ccc 000)h
0 000 00 h
FFFFFF h
Memory addresses on ISA bus
16MB memory address space
WINDOW 0
WINDOW n
MEMORY
MEMORY
·
·
·
(in common memory) on PC card bus
Memory addresses
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·
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(qqqq000 )h
(qqqq000)h
+(c c c 000)h
+(ddd0 00)h
(pppp000)h
(pppp000)h
+(aaa00 0)h
+(bbbFFF)h
or
or
3FFFFFFh
000000h
(in attribute memory) on PC card bus
Memory addresses
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·