pl-2303x Prolific Technology Inc., pl-2303x Datasheet - Page 15

• Manufacturer Part Number: pl-2303x
• Description: Pl-2303x Edition Chip Rev A Usb To Serial Bridge Controller
• Manufacturer: Prolific Technology Inc.

6.0 USB Standard Descriptors
PL-2303X supports one configuration with one interface and four endpoints. The descriptors are
basically stored in an internal Mask ROM. However, some fields could be optionally modified by
properly programmed external 2-wire serial EEPROM. The contents of all descriptors are shown in the
following sections.
6.1 Device Descriptor
Notes:
(1) – The Vender ID, Product ID, and Device Release Number could be replaced by the contents of external EEPROM.
(2) – The serial number string descriptor index could be defined by the contents of external EEPROM. If specified, the index will
6.2 Configuration Descriptor
Notes:
(3) – The Remote Wakeup attribute (bit 5) depends on the settings of the Remote Wakeup Enable (Setting in the Device
PL-2303XA Product Datasheet
Offset
Offset
10
12
14
15
16
17
0
1
2
4
5
6
7
8
0
1
2
4
5
6
7
8
Configuration Registers, DCR, of PL-2303X). If all remote wakeup sources are disabled, the bmAttributes will be 80h.
Otherwise, A0h is returned to indicate that this device is Remote Wakeup capable.
be 3 instead of 0.
bLength
bDescriptorType
bcdUSB
bDeviceClass
bDeviceSubClass
bDeviceProtocol
bMaxPacketSize0
idVender
idProduct
bcdDevice
iManufacturer
iProduct
iSerialNumber
bNumConfigurations
bLength
bDescriptorType
wTotalLength
bNumInterface
bConfigurationValue
iConfiguration
bmAttributes
MaxPower
Field
Field
Table 6-2 Configuration Descriptor
Word
Size
Byte
Byte
Byte
Byte
Byte
Byte
Byte
Word
Word
Word
Word
Size
Byte
Byte
Byte
Byte
Byte
Byte
Byte
Byte
Byte
Byte
Table 6-1 Device Descriptor
00H/03H
067BH
A0h/80h
32h/FAh
0110H
2303H
0300H
Value
0027h
Value
12H
01H
00H
00H
00H
40H
01H
02H
01H
09h
02h
01h
01h
00h
- 15 -
Size of this descriptor (in bytes)
DEVICE descriptor type
USB Specification Release Number 1.1
Maximum packet size for endpoint zero is 64
Vender ID
Product ID
Device Release Number
Manufacturer string descriptor index
Product name string descriptor index
Serial number string descriptor index
One configuration.
Size of this descriptor (in bytes)
CONFIGURATION descriptor type
Total length of data returned for this
configuration.
One interface for this device.
Characteristic attributes
Maximum power consumption
(1)
(1)
Description
Description
ds_pl2303XA_v15F.doc
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Document Version 1.5F
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Revised Date:
July 4, 2006
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