smc256af Numonyx, smc256af Datasheet - Page 55

• 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

SMCxxxAF
9.4.6
9.4.7
9.4.8
9.4.9
9.4.10
9.4.11
9.4.12
9.4.13
9.4.14
Word 10-19: memory card serial number
The contents of this field are right justified and padded with spaces (20h).
Word 23-26: firmware revision
This field contains the revision of the firmware for this product.
Word 27-46: model number
This field contains the model number for this product and is left justified and padded with
spaces (20h).
Word 47: read/write multiple sector count
This field contains the maximum number of sectors that can be read or written per interrupt
using the Read Multiple or Write Multiple commands.
Word 49: capabilities
Word 51: PIO data transfer cycle timing mode
This field defines the mode for PIO data transfer. For backward compatibility with BIOSs
written before word 64 was defined for advanced modes, a device reports in word 51, the
highest original PIO mode it can support (PIO mode 0, 1 or 2).
Bits 15-8: are set to 02H.
Word 53: translation parameter valid
Word 54-56: current number of cylinders, heads, sectors/track
These fields contains the current number of user addressable cylinders, heads, and
sectors/track in the current translation mode.
Word 57-58: current capacity
This field contains the product of the current cylinders, heads and sectors.
Bit 13 Standby timer: it is set to ’0’ to indicate that the Standby timer operation is
defined by the manufacturer.
Bit 9 LBA support: CompactFlash memory cards support LBA mode addressing.
Bit 8 DMA Support: DMA mode is not supported.
Bit 1: is set to '1' to indicate that words 64 to 70 are valid
Bit 0: is set to '1' to indicate that words 54 to 58 are valid
CF-ATA command description
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