PDIUSBH11NB PHILIPS [NXP Semiconductors], PDIUSBH11NB Datasheet - Page 8

• Manufacturer Part Number: PDIUSBH11NB
• Description: Universal Serial Bus Hub
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
COMMAND DESCRIPTIONS
Command Procedure
There are four basic types of commands: Initialization, Data, Hub Specific and General commands. Respectively, these are used to initialize the
hub and embedded function; for data flow between the hub, embedded function and the host; some hub specific commands for controlling
individual downstream ports; and some general commands.
Initialization Commands
Initialization commands are used during the enumeration process of the USB network. These commands are used to enable the hub and
embedded function endpoints. They are also used to set the USB assigned address.
Set Address / Enable
Command
Data
This command is used to set the USB assigned address and enable the hub or embedded function respectively. The hub always powers up
disabled and should be enabled after a bus RESET.
Set Endpoint Enable
Command
Data
Interrupt endpoints can only be enabled when the hub/function is enabled via the Set Address/Enable command.
1997 Aug 01
Universal Serial Bus Hub
ENABLE
ADDRESS
THE VALUE WRITTEN BECOMES THE ADDRESS
A ‘1’ ENABLES THIS FUNCTION
7
0
HUB’S INTERRUPT ENDPOINT
FUNCTION’S INTERRUPT ENDPOINT
6
0
5
0
: D0h (Hub), D1h (Embedded Function)
: Write 1 byte
: D8h
: Write 1 byte
4
0
3
0
2
0
1
0
0
0
POWER ON VALUE
ADDRESS
ENABLE
7
X
6
X
X
5
A VALUE OF ‘1’ INDICATES THE HUB’S INTERRUPT ENDPOINT IS ENABLED.
A VALUE OF ‘1’ INDICATES THE EMBEDDED FUNCTION’S INTERRUPT ENDPOINT IS ENABLED.
4
X
3
X
X
2
1
0
SV00385
0
0
POWER ON VALUE
HUB’S INTERRUPT ENDPOINT
FUNCTION’S INTERRUPT ENDPOINT
RESERVED
8
PDIUSBH11
Product specification
SV00387