Command Description; Command Procedure; Initialization Commands; Set Address/Enable - Philips PDIUSBD12 Product Data

Philips Semiconductors

11. Command description

11.1 Command procedure

11.2 Initialization commands

11.2.1 Set Address/Enable

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Product data
Table 4: Command summary
Name
Set Endpoint Status
Acknowledge Setup
Clear Buffer
Validate Buffer
General commands
Send Resume
Read Current Frame Number
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.
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.
Code (Hex) — D0
Transaction — write 1 byte
This command is used to set the USB assigned address and enable the function.
ADDRESS: The value written becomes the address.
ENABLE: A '1' enables this function.
Fig 4. Set Address/Enable command: bit allocation.
Rev. 08 — 20 December 2001
USB interface device with parallel bus
...continued
Destination
Control OUT
Control IN
Endpoint 1 OUT
Endpoint 1 IN
Endpoint 2 OUT
Endpoint 2 IN
Selected Endpoint
Selected Endpoint
Selected Endpoint
7 6 5 4 3 2 1 0
POWER ON VALUE
0 0 0 0 0 0 0 0
ADDRESS
ENABLE
PDIUSBD12
Code (Hex) Transaction
40 Write 1 byte
41 Write 1 byte
42 Write 1 byte
43 Write 1 byte
44 Write 1 byte
45 Write 1 byte
F1 None
F2 None
FA None
F6 None
F5 Read 1 or 2 bytes
SV00825
© Koninklijke Philips Electronics N.V. 2001. All rights reserved.
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