參數(shù)資料
型號(hào)： RF5C396L
廠商： RICOH COMPANY LTD
元件分類： 總線控制器
英文描述： TRI N PLUG F PLAS 0-48
中文描述： PCMCIA BUS CONTROLLER, PQFP208
封裝： 1.70 MM HEIGHT, PLASTIC, LQFP-208
文件頁(yè)數(shù)： 29/93頁(yè)
文件大?。?/td> 449K
代理商： RF5C396L
RF5C296/RF5C396L/RB5C396/RF5C396
25
Setting the bit0 of the Mode Control Register 1 (Index=1Fh) to “1” configures the corresponding card slot to the
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.
Bits2 to 6 can be set to specify the values of the CA21 to CA25 pin signals (marked with “
*
” in the pin definition
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.
Bit7 can be set to prevent any conflict between the system floppy disk signal and the card interface signals.
When set to “1”, bit7 is disabled during reading from an I/O address of 3F7h and 377h on the system data bus.
Mode Control Register 1 (Index=1Fh)
bit7
377h, 3F7h Disable
(in I/O Read)
bit6
A25
bit5
A24
bit4
A23
bit3
A22
bit2
A21
bit1
LED Enable
bit0
PCMCIA-
ATA Mode
RF5C296/RF5C396 provide the DMA Mode for supporting interfacing with external floppy disk units or other
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.
On the DMA mode, some of RF5C296/RF5C396 signal pins will be redefined. IRQ9 will work as DACK# input,
IRQ10 will work as DREQ output, IRQ11 (or IRQ15) will work as TC input.
DREQ from the PC Card can be assigned to one of three PCMCIA inputs (IOIS16#, SPKR# or INPACK#) by set-
ting bit7 and bit6 of Mode Control Register 2.
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.
Notice
ISA bus
DREQ
DACK#
TC
IRQ 10
IRQ 9
IRQ 11(or15)
IOIS 16#
SPKR#
or INPACK#
DREQ
DACK#
IOIS 16# ,
SPKR#,
or INPACK#
REG#
PC card
RF5C296/FR5C396
DMA made configuration
REG#
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.
9. DMA Mode
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