LAN9730 Datasheet, PDF (38/222 Pages) SMSC Corporation – High-Speed Inter-Chip (HSIC) USB 2.0

LAN9730/LAN9730i
4.3.1.6.5 Endpoint 2 (Bulk-Out) Descriptor
Table 4-8 shows the default value for Endpoint Descriptor 2. This descriptor is not initialized from values stored in
EEPROM.
TABLE 4-8: ENDPOINT 2 DESCRIPTOR
Offset
Field
Size
(Bytes)
00h bLength
1
01h bDescriptorType
1
02h bEndpointAddress
1
03h bmAttributes
1
04h wMaxPacketSize
2
Default Value
07h
05h
02h
02h
Note 4-9
06h bInterval
1
00h
Note 4-9
512 bytes for Hi-Speed mode.
Loaded
from
EEPROM
No
No
No
No
No
No
Description
Size of descriptor in bytes
Endpoint Descriptor
Endpoint Address
Bulk Transfer Type
Maximum packet size this Endpoint is
capable of sending.
Interval for polling Endpoint data trans-
fers. Ignored for bulk Endpoints
4.3.1.6.6 Endpoint 3 (Interrupt) Descriptor
Table 4-9 shows the default value for Endpoint Descriptor 3. Only the bInterval field of this descriptor is initialized from
EEPROM.
TABLE 4-9: ENDPOINT 3 DESCRIPTOR
Offset
00h
01h
02h
03h
04h
06h
Note 4-10
Field
Size
(Bytes)
Default Value
Loaded
from
EEPROM
Description
bLength
1
bDescriptorType
1
bEndpointAddress
1
bmAttributes
1
wMaxPacketSize
2
bInterval
1
07h
05h
83h
03h
10h
Note 4-10
No
Size of descriptor in bytes
No
Endpoint Descriptor
No
Endpoint Address
No
Interrupt Transfer Type
No
Maximum packet size this Endpoint is
capable of sending.
Yes
Interval for polling Endpoint data trans-
fers.
This value is loaded from the EEPROM. If no EEPROM exists then this value defaults to 04h.
DS00001946A-page 38
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