6 media status notification function, 7 power management function – FUJITSU MCM3064AP User Manual
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Host Interface
4-18
C156-E227-01EN
•
When software is reset or the DEVICE RESET command is received
Under the condition given below, the command end response to host and data
transfer processing may wait until writing to media is completed:
•
When all data buffer segments are in use, and a command requiring a new
segment is received
Under the conditions given below, write data in the buffer may not be written
properly on media:
•
Power-off
•
Hardware reset
•
Forced media ejection (mechanical ejection)
4.4.6 Media status notification function
The media status notification function notifies the host of various information on
the removable media device. The function is enabled or disabled with the SET
FEATURES command.
When the media status notification function is enabled, the functions below will be
added or changed.
•
The GET MEDIA STATUS command is enabled.
•
The Eject switch is disabled.
The media status notification function is disabled at power-on reset, software reset,
when the DEVICE RESET command is received, or when the EXECUTE
DEVICE DIAGNOSTIC command is received.
4.4.7 Power management function
The ODD provides the power management function that minimizes the power
consumed. For this function, the ODD has some control commands and a timer.
The host uses the functions below to control the power management function.
1)
Standby timer
2)
Idle Immediate command
3)
Sleep command
4)
Standby Immediate command