Philips PDIUSBD11D, PDIUSBD11N Datasheet

INTEGRATED CIRCUITS

PDIUSBD11

USB device with serial interface

Product specification

Product specification 1999 Jul 22 Supersedes data of 1999 Nov 19

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Philips Semiconductors Product specification

PDIUSBD1 1USB device with serial interface

FEA TURES

•Complies with the Universal Serial Bus specification Rev. 1.1

•Complies with the ACPI, OnNOW, and USB power management

requirements

•Compliant with USB Human Interface Devices and Monitor

Control Class

•Compliant with System Management Bus Specification Rev. 1.0

•Integrated SIE (Serial Interface Engine), FIFO memory and

transceivers

•Automatic USB protocol handling

•High speed I

C Interface (up to 1 Mbit/s)

•Compatible with the PDIUSBH11 software

•Software controllable connection to USB bus (SoftConnect)

•Low frequency 12 MHz crystal oscillator eases EMI design issues

•Programmable output clock frequency

•Bus powered capability with very low suspend current

•Controllable LazyClock output during suspend

•Single 3.3 V supply with 5 V tolerant I/O

•Available in 16-pin DIP and SO packages

•Full-scan design with high fault coverage (>99%) insures high

quality

•Higher than 8 kV in-circuit ESD protection lowers cost of extra

components

DESCRIPTION

The Universal Serial Bus hub PDIUSBD11 is a cost and feature-optimized USB interface device. It is used in microcontroller-based systems and communicates with the system microcontroller over the high speed I approach to implementing USB functions allows the designer to choose the optimum system microcontroller from the available wide variety. This flexibility cuts down the development time, risks, and costs by allowing the use of the existing architecture and the firmware investments. This results in the fastest way to develop the most cost-effective USB peripheral solutions. The PDIUSBD1 1 is ideally suited for computer monitors, docking stations, keyboards, and many other applications that use the I architecture.

The PDIUSBD11 conforms to the USB specification Rev. 1.1, I serial interface and the SMBus specifications. It is fully compliant with the Human Interface Device Class and Monitor Control Class specifications. Its low suspend power consumption along with the programmable LazyClock output allows for easy implementation of equipment that is compliant to the ACPI, OnNOW, and USB power management requirements. The low operating power allows the implementation of bus-powered function.

The PDIUSBD11 is fully backward compatible to the PDIUSBH11/PDIUSBH11A software. In addition, it also incorporates the feature enhancements like SoftConnect, LazyClock, programmable clock output, lower frequency crystal oscillator, multiple function endpoints and integration of termination resistors. All of these feature enhancements contribute to significant cost savings in the system implementation and at the same time ease the implementation of advanced USB functionality into the peripherals.

C serial bus. This modular

C or the SMBus-based

ORDERING INFORMATION

PACKAGES TEMPERATURE RANGE OUTSIDE NORTH AMERICA NORTH AMERICA PKG. DWG. #

16-pin plastic SO –40°C to +85°C PDIUSBD11 D PDIUSBD11 D SOT162-1

16-pin plastic DIP –40°C to +85°C PDIUSBD11 N PDIUSBD11 N SOT38-4

BLOCK DIAGRAM

12 MHz

UPSTREAM

3.3V

1.5kW

D+

SoftConnect

NOTE:

1. This is a conceptual block diagram and does not include each individual signal.

PORT

D+

ANALOG TX/R

D–

FULL SPEED

PLL

BIT CLOCK RECOVERY

PHILIPS SIE

INTEGRATED RAM

MEMORY MANAGEMENT UNIT

I SLAVE INTERFACE

INTERRUPT SDA SCL

SV00823

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Philips Semiconductors Product specification

03Control

Generic

PDIUSBD1 1USB device with serial interface

Analog Transceiver

The transceiver interfaces directly to the USB cables through some termination resistors. They are capable of transmitting and receiving serial data at “full speed” (12 Mbit/s) only.

PLL

A 12 MHz to 48 MHz clock multiplier PLL (Phase-Locked Loop) is integrated on-chip. This allows for the use of low-cost 12 MHz crystal. EMI is also minimized due to lower frequency crystal. No external components are needed for the operation of the PLL.

Bit Clock Recovery

The bit clock recovery circuit recovers the clock from the incoming USB data stream using 4X over-sampling principle. It is able to track jitter and frequency drift specified by the USB specification.

Philips Serial Interface Engine (PSIE)

The Philips SIE implements the full USB protocol layer. It is completely hardwired for speed and needs no firmware intervention. The functions of this block include: synchronization pattern recognition, parallel/serial conversion, bit stuffing/de-stuffing, CRC checking/generation, PID verification/generation, address recognition, handshake evaluation/generation.

Memory Management Unit (MMU) and Integrated RAM

The MMU and the integrated RAM is used to handle the large difference in data rate between USB, running in bursts of 12 Mbit/s and the I This allows the microcontroller to read and write USB packets at its own speed through I

C interface to the microcontroller, running at up to 1 Mbit/s.

I2C Slave Interface

This block implements the necessary I2C interface protocol. A slave

C allows for simple micro-coding. An interrupt is used to alert the

microcontroller whenever the PDIUSBD1 1 needs attention. As a

slave I

C device, the PDIUSBD11 I2C clock: SCL is an input and is controlled by the microcontroller. The I 1 Mbit/s.

C interface can run up to

SoftConnect

The connection to the USB is accomplished by bringing D+ (for high-speed USB device) high through a 1.5 kW pull-up resistor. In the PDIUSBD11, the 1.5 kW pull-up resistor is integrated on-chip and is not connected to V internal resistor to Vcc is established through a command sent by the external/system microcontroller. This allows the system microcontroller to complete its initialization sequence before deciding to establish connection to the USB. Re-initialization of the USB bus connection can also be affected without requiring the pull out of the cable.

The PDIUSBD11 will check for USB VBUS availability before the connection can be established. VBUS sensing is provided through VBUS pin.

It should be noted that the tolerance of the internal resistors is higher (30%) than that specified by the USB specification (5%). However, the overall V can still be met with good margin. The decision to make sure of this feature lies with the users.

SoftConnect is a patent pending technology from Philips Semiconductors.

by default. The connection of the

voltage specification for the connection

ENDPOINT DESCRIPTIONS

ENDPOINT# ENDPOINT INDEX TRANSFER TYPE DIRECTION

5 4 6 7 8 9

NOTE:

1. Generic endpoint can be used for Interrupt or Bulk endpoint.

MAX

PACKET SIZE

(BYTES)

OUT 8

IN 8

OUT 8

IN 8

OUT 8

IN 8

OUT 8

IN 8

1999 Jul 22

Philips Semiconductors Product specification

PDIUSBD1 1USB device with serial interface

PIN DESCRIPTION

PIN NO PIN SYMBOL TYPE DRIVE DESCRIPTION

1 TEST Input Connect to GND for normal operation 2 RESET_N Input ST Power-on reset 3 XTAL1 Input Crystal connection 1 (12MHz) 4 XTAL2 Output Crystal connection 2 (12MHz) 5 CLKOUT Output 3 mA Programmable output clock for external devices 6 V

7 SUSPEND Output OD6 Device is in suspended state 8 INT_N Output OD6 Connect to microcontroller interrupt

9 SDA I/O OD6 I2C bi-directional data 10 SCL I/O OD6 I2C bit-clock 11 GND Power Ground reference 12 DP AI/O USB D+ connection 13 DM AI/O USB D– connection 14 AGND Power Analog ground reference 15 AV

16 VBUS Input USB VBUS sensing pin

NOTES:

1. Signals ending in _N indicate active LOW signals. ST: Schmitt Trigger OD6: Open Drain with 6 mA drive AI/O: Analog I/O

Power Voltage supply 3.3V±0.3V

Power Analog voltage supply 3.3V±0.3V

APPLICATION DIAGRAM

3.3V

USB Upstream

D11

e.g. Monitor Control, Mouse, Keyboard, ...

12 MHz

CLKOUT

I2C

µC

FUNCTIONAL BLOCK

SV00824

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Philips Semiconductors Product specification

PDIUSBD1 1USB device with serial interface

I2C Interface

The I2C bus is used to interface to an external microcontroller needed to control the operation of the USB device. For cost consideration, the target system microcontroller can be shared and utilized for both the functional part as well as the USB protocol interfacing. The PDIUSBD1 1 implements a slave I When the PDIUSBD11 needs to communicate with the microcontroller it asserts an interrupt signal. The microcontroller services this interrupt by reading the appropriate status register on the PDIUSBD11 through the I

the I

C serial bus, refer to the

9397 750 00013).

The I

C interface on the PDIUSBD11 defines two types of

transactions:

C bus. (For more information about

I2C Handbook

C interface.

, Philips order number

•command transaction – A command transaction is used to

define which data (e.g., status byte, buffer data, ...) will be read from/written to the USB interface in the next data transaction. A data transaction usually follows a command transaction.

•data transaction – A data transaction reads data from/writes

data to the USB interface. The meaning of the data is dependent on the command transaction which was sent before the data transaction.

Two addresses are used to differentiate between command and data transactions. Writing to the command address is interpreted as a command, while reading from/writing to the data address is used to transfer data between the PDIUSBH11A and the controller.

Protocol

An I2C transaction starts with a Start Condition, followed by an address. When the address matches either the command or data address the transaction starts and runs until a Stop Condition or another Start Condition (repeated start) occurs.

The command address is write-only and is unable to do a read. The next bytes in the message are interpreted as commands. Several command bytes can be sent after one command address. Each of the command bytes is acknowledged and passed on to the Memory Management Unit inside the PDIUSBD11.

When the Start Condition address matches the data address, the next bytes are interpreted as data. When the RW bit in the address indicates a acknowledged and passed on to the Memory Management Unit. If the RW bit in the address indicates a (=‘1’) the PDIUSBD11 will send data to the master. The I2C-master must acknowledge all data bytes except the last one. In this way the I2C interface knows when the last byte has been transmitted and it then releases the SDA line so that the master controller can generate the Stop Condition.

Repeated start support allows another packet to be sent without generating a Stop Condition.

master writes data to slave

(=‘0’) the bytes are received,

master reads data from slave

Timing

The I2C interface in the PDIUSBD11 can support clock speeds up to 1 MHz.

ADDRESS TABLE

Type of Address

Command 0011 011

Data 0011 010

Physical Address

MSB to LSB

(Binary)

1999 Jul 22

Philips Semiconductors Product specification

PDIUSBD1 1USB device with serial interface

COMMAND SUMMARY

Some commands have the same command code (e.g., Read Buffer and Write Buffer). In these cases, the direction of the Data Phase (read or write) indicates which command is executed.

COMMAND NAME

Initialization Commands

Set Address/Enable Function D1h Write 1 byte Set Endpoint Enable Function D8h Write 1 byte Set Mode Function F3h Write 2 byte

Data Flow Commands

Read Interrupt Register F4h Read 2 bytes Select Endpoint Control OUT Endpoint 00h Read 1 byte (optional)

Control IN Endpoint 01h Read 1 byte (optional) Other Endpoints 00h+Endpoint Index Read 1 byte (optional)

Read Last Transaction Status Control OUT Endpoint 40h Read 1 byte

Control IN Endpoint 41h Read 1 byte Other Endpoints 40h+Endpoint Index Read 1 byte

Read Endpoint Status Control OUT Endpoint 80h Read 1 byte

Control IN Endpoint 81h Read 1 byte

Other Endpoints 80h+Endpoint Index Read 1 byte Read Buffer Selected Endpoint F0h Read n bytes Write Buffer Selected Endpoint F0h Write n bytes Set Endpoint Status Control OUT Endpoint 40h Write 1 byte Set Endpoint Status Control IN Endpoint 41h Write 1 byte

Other Endpoints 40h+Endpoint Index Write 1 byte Acknowledge Setup Selected Endpoint F1h None Clear Buffer Selected Endpoint F2h None Validate Buf fer Selected Endpoint FAh None

General Commands

Send Resume F6h None Read Current Frame Number F5h Read 1 or 2 bytes

RECIPIENT CODING DATA PHASE

1999 Jul 22

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