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參數(shù)資料
| 型號： | RB5C396 |
| 廠商： | RICOH COMPANY LTD |
| 元件分類： | 總線控制器 |
| 英文描述： | PC Card Controller compliant with PCMCIA 2.1/JEIDA 4.2 |
| 中文描述： | PCMCIA BUS CONTROLLER, PBGA256 |
| 封裝： | 23 X 23 MM, PLASTIC, BGA-256 |
| 文件頁數(shù)： | 59/93頁 |
| 文件大小： | 449K |
| 代理商： | RB5C396 |
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RF5C296/RF5C396L/RB5C396/RF5C396
55
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
mismatching between the ISA bus and the PC card bus.
The above-described settings of the I/O Address n Start/Stop Low/High Byte Registers for the RF5C296 can be
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.
The Card I/O Offset Address n Low/High Byte Registers, which always default to “00h”, may be omitted from
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 on ISA bus
I/O address on PC card bus
0000h
I/O WINDOW 0
I/O WINDOW 1
aaaah
bbbbh
03E0h
03E1h
cccch
ddddh
FFFFh
I/O address window for access to internal registers
(03E0h and 03e1h)(for use in internal decoding)
0000h
aaaah
bbbbh
cccch
ddddh
FFFFh
I/O Address Mapping by RF5C296
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