LAN9500 Datasheet, PDF (33/213 Pages) SMSC Corporation – USB 2.0 to 10/100 Ethernet Controller Promiscuous mode

LAN950x
5.3.1.6.4
Endpoint 1 (Bulk In) Descriptor
Table 5-7 shows the default value for Endpoint Descriptor 1. This descriptor is not initialized from values stored in
EEPROM.
TABLE 5-7: ENDPOINT 1 DESCRIPTOR
Offset
Field
Size
(Bytes)
Default
Value
Loaded
from
EEPROM
Description
00h bLength
1
01h bDescriptorType
1
02h bEndpointAddress
1
07h
No
Size of Descriptor in bytes
05h
No
Endpoint Descriptor
81h
No Endpoint Address
03h bmAttributes
1
02h
No
Bulk Transfer Type
04h wMaxPacketSize
2
Note 5-9
No
Maximum Packet Size this endpoint is
capable of sending.
06h bInterval
1
00h
No
Interval for polling endpoint data
transfers. Ignored for bulk endpoints.
Note 5-9 64 bytes for Full-Speed mode. 512 bytes for Hi-Speed mode.
5.3.1.6.5
Endpoint 2 (Bulk Out) Descriptor
Table 5-8 shows the default value for Endpoint Descriptor 2. This descriptor is not initialized from values stored in
EEPROM.
TABLE 5-8: ENDPOINT 2 DESCRIPTOR
Offset
Field
Size
(Bytes)
Default
Value
Loaded
from
EEPROM
Description
00h bLength
1
07h
No
Size of Descriptor in bytes
01h bDescriptorType
1
05h
No
Endpoint Descriptor
02h bEndpointAddress
1
02h
No Endpoint Address
03h bmAttributes
1
02h
No
Bulk Transfer Type
04h wMaxPacketSize
2
Note 5-10
No
Maximum Packet Size this endpoint is
capable of sending.
06h bInterval
1
00h
No
Interval for polling endpoint data
transfers. Ignored for bulk endpoints.
Note 5-10 64 bytes for Full-Speed mode. 512 bytes for Hi-Speed mode.
5.3.1.6.6
Endpoint 3 (Interrupt) Descriptor
Table 5-9 shows the default value for Endpoint Descriptor 3. Only the bInterval field of this descriptor is initialized from
EEPROM.
TABLE 5-9: ENDPOINT 3 DESCRIPTOR
Offset
Field
Size
(Bytes)
Default
Value
00h bLength
1
07h
01h bDescriptorType
1
05h
02h bEndpointAddress
1
83h
03h bmAttributes
1
03h
Loaded
from
EEPROM
No
No
No
No
Description
Size of Descriptor in bytes
Endpoint Descriptor
Endpoint Address
Interrupt Transfer Type
 2010 - 2015 Microchip Technology Inc.
DS00001875A-page 33