ISD-300A1 Cypress Semiconductor Corp, ISD-300A1 Datasheet - Page 40

• 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
Vendor-Specific ATA Commands
There are two vendor-specific ATA commands implemented in the ISD-300A1. These commands are
shown in Table 16.
Label
IDENTIFY
EVENT_NOTIFY
Table 16 – Vendor-Specific ATA Commands
IDENTIFY
The vendor-specific Identify (FBh) command enables the ISD-300A1 to request configuration and USB
descriptor information from an attached mass storage device.
Command Code
FBh
Protocol
PIO data-in (refer to ATA/ATAPI-5 Specification, section 9.7).
Identification Register Writes
Table 17 - Identification Register Writes
Device/Head register –
Identification Register Reads
Table 18 - Identification Register Reads
Register
Features
Sector Count
Sector Number
Cylinder Low
Cylinder High
Device/Head
Command
Register
Error
Sector Count
Sector Number
Cylinder Low
Cylinder High
Device/Head
Status
The DEV bit indicates the selected device.
Configuration
Specified in
BSY
Command
obs
obs
7
7
Code
Data
FBh
N/A
N/A
N/A
6
6
Description
This command is used to read ISD-300A1 configuration data and USB
descriptor data from an attached mass storage device.
This command communicates certain events to the device and is executed as
the events occur.
N/A
obs
obs
5
5
35
DEV
DEV
N/A
4
4
FBh
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
DRQ
N/A
3
0
3
N/A
N/A
2
0
2
N/A
N/A
1
0
1
ISD-300A1
ERR
N/A
0
1
0