参数资料
型号: DS2490
英文描述: USB to 1-Wire Bridge Chip
中文描述: USB与1-Wire桥接芯片
文件页数: 11/50页
文件大小: 530K
代理商: DS2490
DS2490
11 of 50
033199
1-Wire Interface Alternate Setting Summary
Table 2
EP1
poll interval
max packet size
0
10mS
Alt Setting
EP2/EP3
Alternate Setting Description
16 bytes
Long interrupt polling interval, small packet size for
bulk pipes
Long interrupt polling interval, large packet size for
bulk pipes
Short interrupt polling interval, small packet size
for bulk pipes
Short interrupt polling interval, large packet size for
bulk pipes
1
10mS
64 bytes
2
1mS
16 bytes
3
1mS
64 bytes
Endpoint Feature Summary
Table 3
Endpoint
#
Type
0
CONTROL
1
INTERRUPT
Transaction
Direction
1
Max. Packet Size
IN/OUT
IN
ALT I/F-0..3: 8 bytes
ALT I/F-0..3 32 bytes
ALT I/F-0:
ALT I/F-1:
ALT I/F-2:
ALT I/F-3:
ALT I/F-0:
ALT I/F-1:
ALT I/F-2:
ALT I/F-3:
16 bytes
64 bytes
16 bytes
64 bytes
16 bytes
64 bytes
16 bytes
64 bytes
2
BULK
OUT
3
BULK
IN
1.
Direction in this table is in reference to the Host
USB Core Commands
Table 4
Standard Device Requests
SET_ADDRESS
SET_CONFIGURATION
GET_CONFIGURATION
GET_DESCIPTOR
GET_INTERFACE
SET_INTERFACE
SET_FEATURE
CLEAR_FEATURE
GET_STATUS
Target Element
Device
Device
Device
Device
Interface 0
Interface 0
Device
Device
Device, Interfaces,
Endpoints 0-3
Range
0x01 - 0xFF
0x00 - 0x01
0x00 - 0x01
Notes
1
2
3
3
4
4
Interface 0: 0x00 - 0x03
Interface 0: 0x00 - 0x03
5, 6
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