ISD-200 Datasheet, PDF (22/64 Pages) List of Unclassifed Manufacturers – USB Mass Storage Class Bulk-Only Specification Compliant

ISD-200 ASIC Datasheet
Configuration 2. This configuration denotes that the ISD-200 is Self powered only and is only
used if Configuration 1 is Dynamic power.
• Interface
The ISD-200 supports one interface with four possible endpoints.
• Endpoint
The ISD-200 supports the following endpoints:
Default Control endpoint. Accessible as endpoint 0.
Bulk Out endpoint. Accessible as endpoint 1.
Bulk In endpoint. Accessible as endpoint 2.
Interrupt endpoint. Accessible as endpoint 3.
• String
The ISD-200 supports a set of class and vendor-specific string descriptors. For more information
on strings, refer to the following section.
Descriptor Data Format
Device Descriptor
There is only one device descriptor for each USB device. This descriptor gives USB information
about the ISD-200 device such as definitions of the device class and device subclass, among other
things.
The bNumConfigurations field specifies how many configurations the ISD-200 supports. See
Power Management, BUS_POWER Pin section.
Address
Field Name
0x12
0x13
0x14
0x15
0x16
bLength
bDescriptor Type
bcdUSB (LSB)
bcdUSB (MSB)
bDeviceClass
0x17 bDeviceSubClass
0x18 bDeviceProtocol
0x19
0x1A
0x1B
0x1C
0x1D
bMaxPacketSize
idVendor (LSB)
idVendor (MSB)
idProduct (LSB)
idProduct (MSB)
0x1E
0x1F
0x20
bcdDevice (LSB)
bcdDevice (MSB)
iManufacturer
Description
Length of device descriptor in bytes.
Descriptor type.
USB Specification release number in BCD.
Device class.
If (Descriptor Override configuration bit = 1 and I_MODE = 0) AND (an
ATA device is detected or device initialization fails to complete), this field is
returned as 0xFF.
Device subclass.
If (Descriptor Override configuration bit = 1 and I_MODE = 0) AND (an
ATA device is detected or device initialization fails to complete), this field is
returned as 0x00
Device protocol.
If (Descriptor Override configuration bit = 1 and I_MODE = 0) AND (an
ATA device is detected or device initialization fails to complete), this field is
returned as 0xFF
Maximum USB packet size supported
Vendor ID.
Product ID.
If (Descriptor Override configuration bit = 1 and I_MODE = 0) AND (an
ATA device is detected or device initialization fails to complete), this field is
returned as idProduct bit 0 is replaced with a ‘1’
Device release number in BCD.
Index to manufacturer string.
This entry must be set to 0x01 if string is present, else 0x00 if not present
On-board
Defaults
0x12
0x01
0x10
0x01
0x00
0x00
0x00
0x40
0xAB
0x05
0x30
0x00
* 0x00
** 0x10
0x01
0x01
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