Datasheet

12.0 General operational descriptions
12.1 Reset Response
There are three types of resets in a CompactFlash device: a power-on reset, a hardware reset, and a
software reset. There is also a reset called PCMCIA soft reset, which uses bit 7 of Configuration Option
Register. It is treated as a hard reset.
A reset initiated by changing bit 7 (SRESET) of Configuration Option
Register as 0, 1 then 0. It is equivalent to a hardware reset
PCMCIA soft reset
A reset initiated by changing bit 2 (SRST) of Device Control Register
as 0, 1 then 0
Soft Reset (Software Reset)
A reset initiated by a raising edge of RESET signal (in True IDE mode)
A reset initiated by a falling edge of RESET signal (In PC Card mode)
Hard Reset (Hardware Reset)
A reset carried out upon device's every power up sequence
Power On Reset (POR)
DescriptionType
Figure 60. Reset type
X00Reset Standby timer
• ABLE mode
• DMA transfer mode (3)
• PIO transfer mode
• Byte transfer mode (3)
y On-demand prefetch
y Delayed Write
y ECC bytes for Read Long and Write Long
y Read look-ahead
y Write cache
y Multiple mode
y Logical geometry (number of cylinders/heads/sectors)
(4)00Reverting programmed parameters to power-on default
000PDIAG– handshake (3)
000DASP– handshake (3)
X00Initialization of registers at attribute memory
000Initialization of task file registers (2)
X00Internal diagnostics
X00Initialization of hardware
(1)(1)–Aborting Device operation
00–Aborting Host interface
Soft ResetHard ResetPORDescription
Figure 61. Reset Response
Notes:
– - not applicable
O - executed
X - not executed
Hard disk drive specification for DSCM-11000/-10512/-10340
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