Datasheet

Revised Date:
April 16, 2007
ds_pl2303HXD_v1.1.doc
PL-2303HX (Rev D) Product Datasheet - 18 - Document Version 1.1
6.7.3 String Descriptor 2 - Product
Table 6-7c String Descriptor – Product
Offset Field Size Value Description
0
Blength
Byte 30h Size of this descriptor (in bytes)
1
bDescriptorType
Byte 03h STRING descriptor type
2
bSTRING
⎯ ⇒
“USB-Serial Controller C” in UNICODE
6.7.4 String Descriptor 3 – Serial Number
Table 6-7d String Descriptor – Serial Number
Offset Field Size Value Description
0
bLength
Byte 12h Size of this descriptor (in bytes)
1
bDescriptorType
Byte 03h STRING descriptor type
2
bSTRING
⎯ ⇒
“X
7
X
6
X
5
X
4
X
3
X
2
X
1
X
0
” in UNICODE
Note:
The size of Serial Number is fixed in PL-2303HX design. It must be exactly 8 UNICODE characters (or 16 bytes). Note that in
USB Specification, this serial number must be unique for each device.
7.0 USB Standard Requests
PL-2303HX supports the following USB standard requests. For non-supported requests or requests
with invalid parameters, PL-2303HX will respond with STALL packet.
¾ Clear Feature
¾ Get Configuration
¾ Get Descriptor
¾ Get Status
o Device Status
o Interface Status
o Endpoint 0, 1, 2, and 3 Status
¾ Set Address
¾ Set Configuration
¾ Set Feature
Valid Feature Selector supported by PL-2303HX includes:
¾ DEVICE_REMOTE_WAKEUP (for Device)
¾ ENDPOINT_HALT (for all Endpoints)