ISD-300A1 Cypress Semiconductor Corp, ISD-300A1 Datasheet - Page 41

• Manufacturer Part Number: ISD-300A1
• Description: IC USB 2.0 BRIDGE BULK 100LQFP
• Manufacturer: Cypress Semiconductor Corp

Specifications of ISD-300A1

• Applications: USB 2.0 to ATA/ATAPI Bridge
• Interface: ATA, ATAPI
• Voltage - Supply: 3 V ~ 3.6 V
• Package / Case: 100-LQFP
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 428-1459

October 19, 2001
Device/Head register –
Status register –
Device Error Indication
If the device does not support this command, the device shall return command aborted. Otherwise, the
device shall not report an error.
Description
When the command is issued, the device sets the BSY bit to one, and prepares to transfer 512 bytes of
configuration/descriptor data to the ISD-300A1. Note: Configuration and descriptor information is limited
to 256 bytes in length. Data beyond 256 bytes (bytes 256-511) is read by the ISD-300A1 but ignored. The
device then sets DRQ to one and clears BSY to zero.
The arrangement and meaning of the FBh data bytes are specified in Table 3, Table 7, Table 8, Table 9,
Table 10, and Table 11. An example of FBh programming is shown in Appendix A.
EVENT_NOTIFY
The vendor-specific Event-notify command enables the ISD-300A1 to communicate the occurrence of
certain USB and system events to the attached device.
Command Code
Specified in the ISD-300A1 Configuration Bytes, address 0x2. Programming the command code to 0x00
disables the event-notify feature.
Protocol
Non-data (refer to ATA/ATAPI-5 Specification, section 9.9).
Notification Register Writes
Table 19 – Event Notify ATA Command
Features register –
Register
Features
Sector Count
Sector Number
Cylinder Low
Cylinder High
Device/Head
Command
The DEV bit indicates the selected device.
BSY shall be cleared to zero upon command completion.
DRDY shall be set to one.
DF (Device Fault) shall be cleared to zero.
DRQ shall be cleared to zero.
ERR shall be cleared to zero.
The USB Reset bit indicates that a USB Reset event has occurred.
The Class Specific Reset bit indicates that an MSC Reset was issued by the host.
The USB Suspend bit indicates that the USB bus has gone into suspend.
Reserved
Reset
USB
7
Reserved
Specific
Reset
Class
6
Specified in the ISD-300A1 Configuration Bytes
Reserved
Suspend
USB
5
36
Reserved
Resume
USB
4
STATE0
STATE1
N/A
N/A
Cartridge
Reserved
Insert
3
Cartridge
Reserved
Release
2
Button
Speed
Eject
Press
USB
High
ISD-300A1
1
Release
Button
Speed
Eject
USB
Full
0