ISD-200 ETC2 [List of Unclassifed Manufacturers], ISD-200 Datasheet - Page 39

• Manufacturer Part Number: ISD-200
• Description: USB Mass Storage Class Bulk-Only Specification Compliant
• Manufacturer: ETC2 [List of Unclassifed Manufacturers]

ISD-200 ASIC Datasheet
Cylinder High –
Cylinder Low –
Normal Outputs
Cylinder High –
Cylinder Low –
Status register –
Error Outputs
If the device does not support this command, the device shall return command aborted. Otherwise, the
device shall not report an error.
Description
When this command is issued, the ISD-200 will wait until the device clears BSY and DRQ to zero before
beginning the input register writes. After writing the input registers, the ISD-200 waits for BSY and DRQ
cleared to zero and then reads the state information (NSTATE).
The event notification command is issued following every assertion of ATA_NRESET to the device and
following the POR device initialization sequence. The event notification command is also issued after any
of the events reported in the event notification data take place.
If any combination of mating events (mating events are defined as suspend/resume, cartridge insert/release,
eject press/release, and USB/class reset) take place before the ISD-200 can issue the event notification
command to the device, the following will occur:
Register
Error
Sector Count
Sector Number
Cylinder Low
Cylinder High
Device/Head
Status
The Cartridge Release bit is set when the device media is ejected.
The Eject Button Press bit is set when the eject button on the device is pressed.
The Eject Button Release bit is set when the eject button on the device is released.
The STATE0 vendor-specific field is combined with STATE1 specify state information to the
attached device.
The STATE1 vendor-specific field is combined with STATE0 specify state information to the
attached device.
The NSTATE0 vendor-specific field is combined with NSTATE1 to communicate information
about the state of the device back to the host.
The NSTATE1 vendor-specific field is combined with NSTATE0 to communicate information
about the state of the device back to the host.
BSY shall be cleared to zero upon command completion.
DRQ shall be cleared to zero.
1.
2.
Send an event notification command showing all events.
Send a subsequent event notification command showing only the most recent of any
mated events.
In-System Design Confidential
BSY
7
N/A
6
N/A
5
N/A
4
NSTATE0
NSTATE1
N/A
N/A
N/A
N/A
DRQ
3
N/A
2
N/A
1
N/A
0
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