PDIUSBD datasheet(7/20 Pages) PHILIPS

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Philips Semiconductors

Product specification

PDIUSBD11

USB device with serial interface

1999 Jul 22

COMMAND DESCRIPTIONS

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.

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.

Set Address / Enable

Command

: D1h, (Function)

Data

: Write 1 byte

This command is used to set the USB assigned address and enable

the function.

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 generic endpoints can only be enabled when the function is

enabled via the Set Address/Enable command.

POWER ON VALUE

RESERVED; WRITE 0

FUNCTION GENERIC ENDPOINTS

RESERVED; WRITE 0

SV00826

Function Generic Endpoint

A value of ‘1’ indicates the

function 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.

Configuration Byte

POWER ON VALUE

REMOTE WAKEUP

NO LAZYCLOCK

SV00827

CLOCK RUNNING

DEBUG MODE

SoftConnect

™

RESERVED; WRITE 0

FUTURE MODE

Remote Wakeup

A ‘1’ indicates that a remote wakeup feature is

ON. Bus reset will set this bit to ‘1’.

No LazyClock

A ‘1’ indicates that CLKOUT will not switch to

LazyClock. A ‘0’ indicates that the CLKOUT

switches to LazyClock 1ms after the Suspend

pin goes high. LazyClock frequency is 30KHz

±40%. The programmed value will not be

changed by a bus reset.

Clock Running

A ‘1’ indicates that the internal clocks and PLL

are always running even during Suspend state.

A ‘0’ indicates that the internal clock, crystal

oscillator and PLL are stopped whenever not

needed. To meet the strict Suspend current

requirement, this bit needs to be set to ‘0’. The

programmed value will not be changed by a bus

reset.

Debug Mode

A ‘1’ indicates that all errors and “NAKing” are

reported and a ‘0’ indicates that only OK and

babbling are reported. The programmed value

will not be changed by a bus reset.

SoftConnect

™

A ‘1’ indicates that the upstream pull-up resistor

will be connected if VBUS is available. A ‘0’

means that the upstream resistor will not be

connected. The programmed value will not be

changed by a bus reset.

FutureMode

Write a ‘1’.

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