Datasheet

Revised Date:
April 16, 2007
ds_pl2303HXD_v1.1.doc
PL-2303HX (Rev D) Product Datasheet - 16 - Document Version 1.1
Configuration Register 2). 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.
(4) – The value of maximum power consumption depends on the LD_MODE (bit 5 of Device Configuration Register 2)
parameter. If it is set to 1, the MaxPower byte will be FAh for it requires 500mA from the system. Otherwise, it is 32h that
indicates 100mA required.
6.3 Interface Descriptor
Table 6-3 Interface Descriptor
Offset Field Size Value Description
0
BLength
Byte 09h Size of this descriptor (in bytes)
1
BDescriptorType
Byte 04h INTERFACE descriptor type
2
BInterfaceNumber
Byte 00h One interface only
3
BAlternateSetting
Byte 00h No alternate interface
4
BNumEndpoints
Byte 03h Three endpoints (excluding control endpoint)
5
BInterfaceClass
Byte FFh Vendor Specific Class
6
BInterfaceSubClass
Byte 00h
7
BInterfaceProtocol
Byte 00h
8
IInterface
Byte 00h
6.4 Endpoint 1 Descriptor: Interrupt Input Endpoint
Table 7-4 Endpoint1 Descriptor
Offset Field Size Value Description
0
bLength
Byte 07h Size of this descriptor (in bytes)
1
bDescriptorType
Byte 05h ENDPOINT descriptor type
2
bEndpointAddress
Byte 81h Input endpoint
3
bmAttributes
Byte 03h Transfer type is INTERRUPT
4
wMaxPacketSize
Word 000Ah Ten Bytes
6
bInterval
Byte 01h Polling on every 1 ms interval
6.5 Endpoint 2 Descriptor: Bulk Data Output endpoint
Table 6-5 Endpoint2 Descriptor
Offset Field Size Value Description
0
bLength
Byte 07h Size of this descriptor (in bytes)
1
bDescriptorType
Byte 05h ENDPOINT descriptor type
2
bEndpointAddress
Byte 02h Output endpoint
3
bmAttributes
Byte 02h Transfer type is BULK
4
wMaxPacketSize
Word 0040h 64 bytes
6
bInterval
Byte 00h Ignored field