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PDIUSBH11AD датащи(PDF) 11 Page - NXP Semiconductors

номер детали PDIUSBH11AD
подробное описание детали  Universal Serial Bus Hub
PDF  28 Pages
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производитель  PHILIPS [NXP Semiconductors]
домашняя страница  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

PDIUSBH11AD датащи(HTML) 11 Page - NXP Semiconductors

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Philips Semiconductors
Product specification
PDIUSBH11A
Universal Serial Bus Hub
1999 Jul 22
11
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
: D0h (Hub), D1h, D2h, D3h,
(Embedded Functions)
Data
: Write 1 byte
This command is used to set the USB assigned address and enable
the hub or embedded functions respectively. The hub powers up
enabled and needs not be enabled by the firmware at power up
initialization.
76
5
4
3
2
0
1
0
0
POWER ON VALUE
ADDRESS
ENABLE
SV00825
00
00
00
Address
The value written becomes the address.
Enable
A ‘1’ enables this function.
Set Endpoint Enable
Command
: D8h
Data
: Write 1 byte
The hub’s interrupt endpoint and the embedded functions generic
endpoints can only be enabled when the corresponding hub/function
is enabled via the Set Address/Enable command.
SV00841
76
5
4
3
2
0
1
0
0
POWER ON VALUE
EMBEDDED FUNCTION 1 GENERIC ENDPOINTS
00
XX
XX
RESERVED
EMBEDDED FUNCTION 7 GENERIC ENDPOINTS
HUB’S INTERRUPT ENDPOINT
EMBEDDED FUNCTION 6 GENERIC ENDPOINTS
Hub’s Interrupt Endpoint
A value of ‘1’ indicates the hub’s
interrupt endpoint is enabled.
Embedded Function 1
Generic Endpoint
A value of ‘1’ indicates the
embedded function 1 generic
endpoints are enabled.
Embedded Function 6
Generic Endpoint
A value of ‘1’ indicates the
embedded function 6 generic
endpoints are enabled.
Embedded Function 7
Generic Endpoint
A value of ‘1’ indicates the
embedded function 7 generic
endpoints are enabled.



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