PDIUSBH12 datasheet(11/28 Pages) PHILIPS

11 / 28 page

Philips Semiconductors

Product specification

PDIUSBH12

USB 2-port hub

1999 Jul 22

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.

POWER ON VALUE

ADDRESS

ENABLE

SV00825

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

POWER ON VALUE

EMBEDDED FUNCTION 1 GENERIC ENDPOINTS

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.

Set Mode

Command

: F3h

Data

: Write 2 bytes

The Set Mode command is followed by two data writes. The first

byte contains the configuration byte values. The second byte is the

clock division factor byte.

PDIUSBH12 датащи(PDF) 11 Page - NXP Semiconductors

PDIUSBH12 датащи(HTML) 11 Page - NXP Semiconductors

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28

датащи скачать

ссылки URL