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SMC032AF bảng dữ liệu(PDF) 49 Page - Numonyx B.V

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Giải thích chi tiết về linh kiện  32 Mbyte, 64 Mbyte, 128 Mbyte, 256 Mbyte and 512 Mbyte 3.3 V / 5 V supply CompactFlash??card
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SMCxxxAF
CF-ATA registers
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8.10
Device control register (address 3F6h [376h]; offset Eh)
This write-only register is used to control the CompactFlash memory card interrupt request
and to issue an ATA soft reset to the card. This register can be written even if the device is
BUSY. The bits are defined as follows:
8.10.1
Bit 7 to 3
Don’t care. The host should reset this bit to ‘0’.
8.10.2
Bit 2 (SW Rst)
This bit is set to ‘1’ in order to force the CompactFlash storage card to perform an AT Disk
controller Soft Reset operation. This clears status register and writes diagnostic code in
error register after a write or read sector error. The card remains in reset until this bit is reset
to ‘0.’
8.10.3
Bit 1 (–IEn)
When the Interrupt Enable bit is set to ‘0’, –IREQ interrupts are enabled. When the bit is set
to ‘1’, interrupts from the card are disabled. This bit also controls the Int bit in the card
configuration and status register. It is set to ‘0’ at power-on.
8.10.4
Bit 0
This bit is set to ‘0’.
Table 43.
Status & alternate status register
D7
D6
D5
D4
D3
D2
D1
D0
BUSY
RDY
DWF
DSC
DRQ
CORR
0
ERR
Table 44.
Device control register
D7
D6
D5
D4
D3
D2
D1
D0
X(0)
X(0)
X(0)
X(0)
X(0)
SW Rst
–IEn
0



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