smc256af Numonyx, smc256af Datasheet - Page 56

• Manufacturer Part Number: smc256af
• Description: 32 Mbyte, 64 Mbyte, 128 Mbyte, 256 Mbyte And 512 Mbyte 3.3 V / 5 V Supply Compactflash? Card
• Manufacturer: Numonyx

CF-ATA command description
9.4.15
9.4.16
9.4.17
9.4.18
9.4.19
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Word 59: multiple sector setting
Word 60-61: total sectors addressable in LBA mode
This field contains the number of sectors addressable for the card in LBA mode only.
Word 64: advanced PIO transfer modes supported
This field is bit significant. Any number of bits may be set to ‘1’ in this field by the
CompactFlash memory card to indicate the advanced PIO modes it is capable of
supporting.
Word 67: minimum PIO transfer cycle time without flow control
This field gives the minimum cycle time (in ns) that the host should use for the
CompactFlash memory card to provide data integrity during transfer when flow control is not
used. The value returned is 78h (for cycle time values refer to
Word 68: minimum PIO transfer cycle time with IORDY
This field gives the minimum cycle time (in ns) supported by the CompactFlash memory
card to perform data transfers using IORDY flow control. The value returned is 78h (for
cycle time values refer to
Table 51.
Command (7)
Sect Num (3)
Sect Cnt (2)
Cyl High (5)
Cyl Low (4)
Feature (1)
C/D/H (6)
Bits 15-9 are reserved and must be set to ‘0’.
Bit 8 is set to ‘1’, to indicate that the multiple sector setting is valid.
Bits 7-0 are the current setting for the number of sectors to be transferred for every
interrupt, on Read/Write Multiple commands; the only values returned are 00h or 01h.
Bits 7-2 are reserved for future advanced PIO modes.
Bit 1 is set to ‘1’, indicates that the CompactFlash memory card supports PIO mode 4.
Bit 0 is set to ‘1’ to indicate that the CompactFlash memory card supports PIO mode 3.
Bit
Identify drive
7
Table
X
6
22).
5
Drive
4
ECh
X
X
X
X
X
3
Table
2
22).
X
1
SMCxxxAF
0