參數(shù)資料
型號: PDUSBD12PWDH
廠商: NXP SEMICONDUCTORS
元件分類: 總線控制器
英文描述: nullUSB interface device with parallel bus
中文描述: UNIVERSAL SERIAL BUS CONTROLLER, PDSO28
文件頁數(shù): 11/35頁
文件大?。?/td> 838K
代理商: PDUSBD12PWDH
Philips Semiconductors
PDIUSBD12
USB interface device with parallel bus
Product data
Rev. 08 — 20 December 2001
11 of 35
9397 750 09238
Koninklijke Philips Electronics N.V. 2001. All rights reserved.
11. Command description
11.1 Command procedure
There are three basic types of commands: Initialization, Data Flow and General
commands. Respectively, these are used to initialize the function; for data flow
between the function and the host; and some general commands.
11.2 Initialization commands
Initialization commands are used during the enumeration process of the USB
network. These commands are used to enable the function endpoints. They are also
used to set the USB assigned address.
11.2.1
Set Address/Enable
Code (Hex) —
D0
Transaction —
write 1 byte
This command is used to set the USB assigned address and enable the function.
Set Endpoint Status
Control OUT
Control IN
Endpoint 1 OUT
Endpoint 1 IN
Endpoint 2 OUT
Endpoint 2 IN
Selected Endpoint
Selected Endpoint
Selected Endpoint
40
41
42
43
44
45
F1
F2
FA
Write 1 byte
Write 1 byte
Write 1 byte
Write 1 byte
Write 1 byte
Write 1 byte
None
None
None
Acknowledge Setup
Clear Buffer
Validate Buffer
General commands
Send Resume
Read Current Frame Number
F6
F5
None
Read 1 or 2 bytes
Table 4:
Name
Command summary
…continued
Destination
Code (Hex)
Transaction
ADDRESS
: The value written becomes the address.
ENABLE
: A ‘1’ enables this function.
Fig 4.
Set Address/Enable command: bit allocation.
7
0
6
0
5
0
4
0
3
0
2
0
0
1
0
0
POWER ON VALUE
ADDRESS
ENABLE
SV00825
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