Datasheet PDIUSBH1 Datasheet (Philips)

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PDIUSBH11

Universal Serial Bus hub

Preliminary specification 1996 Nov 12

INTEGRATED CIRCUITS

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Philips Semiconductors Preliminary specification

PDIUSBH11Universal Serial Bus hub

1996 Nov 12

FEATURES

•Complies with the Universal Serial Bus specification Rev. 1.0

•Four downstream ports with per packet connectivity

•Embedded function with two endpoints (control and interrupt)

•Integrated FIFO memory for hub and embedded function

•Automatic protocol handling

•Versatile I

C interface

•Compliant with USB Human Interface and Display Device Class

•Single 3.3V supply and SDIP32 package

DESCRIPTION

The Philips Semiconductors Universal Serial Bus (USB) hub is designed to provide USB expandability in a PC system and plug-and-play control of the embedded function, for example, monitor. The PDIUSBH11 is used in a microcontroller based system and communicates with the system microcontroller over the I

serial bus. This modular approach to implementing a hub and embedded

function allows the designer to either use a low cost dedicated microcontroller or adapt the existing system microcontroller. The PDIUSBH11 conforms to the USB specification 1.0 and the I

serial interface specification. Since the device is a compound USB device (hub function plus

embedded function), the embedded function appears as PORT1 to the host system. The four expansion ports are numbered 2 through

ORDERING INFORMATION

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

32-pin plastic SO 0°C to +70°C PDIUSBH11 D PDIUSBH11 D SOT287–1 32-pin plastic SDIP 0°C to +70°C PDIUSBH11 NB PDIUSBH11 NB SOT232–1

BLOCK DIAGRAM

ANALOG TX/R

PORT CONTROL

ANALOG TX/R

PORT CONTROL

ANALOG TX/R

PORT CONTROL

ANALOG TX/R

PORT CONTROL

GENERAL PORT CONTROLLER

HUB

REPEATER

END OF FRAME TIMERS

ANALOG T

X/RX

PHILIPS SIE

INTEGRATED RAM

BIT CLOCK RECOVERY

MEMORY MANAGEMENT UNIT

C SLAVE INTERFACE

48 MHz

FULL SPEED

INTERRUPT SDA SCL

LED ENABLE

D–D+

LED ENABLE

D–D+

LED ENABLE

D–D+

LED ENABLE

D–D+

DOWNSTREAM PORT 2

DOWNSTREAM PORT 3

DOWNSTREAM PORT 4

DOWNSTREAM PORT 5

D+

D–

UPSTREAM PORT

SV00226

NOTE:

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

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Philips Semiconductors Preliminary specification

PDIUSBH11Universal Serial Bus hub

1996 Nov 12

Analog Transceivers

These transceivers interface directly to the USB cables through some termination resistors. They are capable of transmitting and receiving serial data at both “full speed” (12 Mbit/s) and “low speed” (1.5 Mbit/s) data rates.

Hub Repeater

The hub repeater is responsible for managing connectivity on a per packet basis. It implements packet signaling connectivity and resume connectivity.

Low speed devices can be connected to downstream ports since the repeater will not propagate upstream packets to downstream ports, to which low speed devices are connected, unless they are preceded by a PREAMBLE PID.

End of Frame Timers

This block contains the specified EOF1 and EOF2 timers which are used to detect loss–of–activity and babble error conditions in the hub repeater. The timers also maintain the low–speed keep–alive strobe which is sent at the beginning of a frame.

General and Individual Port Controller

The general and individual port controllers together provide status and control of individual downstream ports. Via the I

C–interface a microcontroller can access the downstream ports and request or change the status of each individual port.

Any change in the status or settings of the individual port will result in an interrupt request. Via an interrupt register, the servicing microcontroller can look up the downstream port which generated

the interrupt and request its new status. Any port status change can then be reported to the host via the hub status change (interrupt) endpoint.

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 spec.

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: synchronisation pattern recognition, parallel / serial conversion, bit stuffing / destuffing, 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 burst of 12 Mbit/s and the I

C interface to the microcontroller, running at 100 kbit/s. This allows the microcontroller to read and write USB packets at its own (low) speed through I

C Slave Interface

This block implements the necessary I

C interface protocol. A slave

C allows for simple micro–coding. An interrupt is used to alert the microcontroller whenever the PDIUSBH11 needs attention. As a slave I

C device, the PDIUSBH11 I2C clock: SCL is an input and is

controlled by the microcontroller.

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Philips Semiconductors Preliminary specification

PDIUSBH11Universal Serial Bus hub

1996 Nov 12

ENDPOINT DESCRIPTIONS

The following table summarizes the endpoints supported by the PDIUSBH11.

FUNCTION

ENDPOINT

NUMBER

ENDPOINT TYPE TRANSFER TYPE DIRECTION

MAXIMUM PACKET SIZE

(bytes)

0 Default Control IN, OUT 8

HUB

1 Status change Interrupt IN 1 0 Default Control IN, OUT 8 1 Interrupt Interrupt IN 8

PIN DESCRIPTION

The PDIUSBH11 has two modes of operation. The first mode (Mode 0) enables the pins DNx_EN_N to power a LED indicating the port is enabled. The second mode (Mode 1) utilizes the LED enable pins as per port overcurrent condition pins.

The voltage level at power up on the TEST1 and TEST2 pins determine the PDIUSBH11 mode of operation. When both of the pins are connected to Ground, Mode 0 is enabled. When pins TEST1 and TEST2 are connected to Vcc, Mode 1 is enabled. Note that in Mode 1 the pin DN2_EN_N remains an LED enable pin. Pin TEST3 should always be connected to Ground at all times.

PIN DESCRIPTION (MODE 0)

PIN NO PIN SYMBOL I/O DRIVE NAME AND FUNCTION

1 TEST1 I Connect to Ground 2 TEST2 I Connect to Ground 3 TEST3 I Connect to Ground 4 RESET_N I ST Power-on reset 5 GND POWER Ground reference 6 XTAL1 I Crystal connection 1 (48MHz) 7 XTAL2 O Crystal connection 2 (48MHz) 8 CLK12MHZ O 2mA 12MHz output clock for external devices 9 V

POWER Voltage supply 3.3V  0.3V

10 OCURRENT_N I ST Over-current notice to the device

11 SWITCH_N O OD8 Enables power to downstream ports 12 SUSPEND O 4mA Device is in suspended state 13 DN2_EN_N O OD8 Downstream port 2 LED enable indicator 14 DN3_EN_N O OD8 Downstream port 3 LED enable indicator 15 DN4_EN_N O OD8 Downstream port 4 LED enable indicator 16 DN5_EN_N O OD8 Downstream port 5 LED enable indicator 17 INT_N O OD4 Connect to microcontroller interrupt 18 SDA I/O OD4 I2C bi-directional data 19 SCL I/O OD4 I2C bit-clock 20 GND POWER Ground reference 21 DN5_DP AI/O Downstream port 5 D+ connection 22 DN5_DM AI/O Downstream port 5 D– connection 23 DN4_DP AI/O Downstream port 4 D+ connection 24 DN4_DM AI/O Downstream port 4 D– connection 25 DN3_DP AI/O Downstream port 3 D+ connection 26 DN3_DM AI/O Downstream port 3 D– connection 27 DN2_DP AI/O Downstream port 2 D+ connection 28 DN2_DM AI/O Downstream port 2 D– connection 29 AGND POWER Analog Ground reference 30 AV

POWER Analog voltage supply 3.3V  0.3V 31 UP_DP AI/O Upstream D+ connection 32 UP_DM AI/O Upstream D– connection

EMBEDDED

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Philips Semiconductors Preliminary specification

PDIUSBH11Universal Serial Bus hub

1996 Nov 12

PIN DESCRIPTION (MODE 1)

PIN NO PIN SYMBOL I/O DRIVE NAME AND FUNCTION

1 TEST1 I Connect to V

2 TEST2 I Connect to V

3 TEST3 I Connect to Ground 4 RESET_N I ST Power-on reset 5 GND POWER Ground reference 6 XTAL1 I Crystal connection 1 (48MHz) 7 XTAL2 O Crystal connection 2 (48MHz) 8 CLK12MHZ O 2mA 12MHz output clock for external devices 9 V

POWER Voltage supply 3.3V  0.3V 10 OCURRENT2_N I ST Downstream port 2 over-current notice

11 SWITCH_N O OD8 Enables power to downstream ports 12 SUSPEND O 4mA Device is in suspended state 13 DN2_EN_N O OD8 Downstream port 2 LED enable indicator 14 OCURRENT3_N I ST Downstream port 3 over-current notice 15 OCURRENT4_N I ST Downstream port 4 over-current notice 16 OCURRENT5_N I ST Downstream port 5 over-current notice 17 INT_N O OD4 Connect to microcontroller interrupt 18 SDA I/O OD4 I2C bi-directional data 19 SCL I/O OD4 I2C bit-clock 20 GND POWER Ground reference 21 DN5_DP AI/O Downstream port 5 D+ connection 22 DN5_DM AI/O Downstream port 5 D– connection 23 DN4_DP AI/O Downstream port 4 D+ connection 24 DN4_DM AI/O Downstream port 4 D– connection 25 DN3_DP AI/O Downstream port 3 D+ connection 26 DN3_DM AI/O Downstream port 3 D– connection 27 DN2_DP AI/O Downstream port 2 D+ connection 28 DN2_DM AI/O Downstream port 2 D– connection 29 AGND POWER Analog Ground reference 30 AV

POWER Analog voltage supply 3.3V  0.3V 31 UP_DP AI/O Upstream D+ connection 32 UP_DM AI/O Upstream D– connection

NOTES:

1. Signals ending in _N indicate active low signals. ST: Schmitt Trigger OD4, OD8: Open Drain with 4 or 8 mA drive AI/O: Analog I/O

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Philips Semiconductors Preliminary specification

PDIUSBH11Universal Serial Bus hub

1996 Nov 12

RECOMMENDED OPERATING CONDITIONS

LIMITS

SYMBOL

PARAMETER

CONDITIONS

UNIT

MIN.

MAX.

DC supply voltage 3.0 3.6 V

DC Input voltage range 0 5.5 V

I/O

DC input range for I/O 0 5.5 V

AI/O

DC input range for analog I/O 0 V

DC output voltage range 0 V

amb

Operating ambient temperature range in free air

See DC and AC characteristics

for individual device

0 +70 °C

ABSOLUTE MAXIMUM RATINGS

In accordance with the Absolute Maximum Rating System (IEC 134) Voltages are referenced to GND (ground = 0V)

LIMITS

SYMBOL

PARAMETER

CONDITIONS

MIN MAX

UNIT

DC supply voltage –0.5 +4.6 V

DC input diode current VI < 0 – –50 mA

DC input voltage Note 2 –0.5 +5.5 V

I/O

DC input voltage range for I/O’s –0.5 V

+0.5 V

DC output diode current VO > VCC or VO < 0 – 50 mA

DC output voltage Note 2 –0.5 VCC +0.5 V

DC output source or sink current for VP/VM, RCV pins

VO = 0 to V

– 15 mA

DC output source or sink current for D+/D– pins

VO = 0 to V

– 50 mA

GND

, ICCDC VCC or GND current – 100 mA

stg

Storage temperature range –60 +150 °C

tot

Power dissipation per package mW

NOTES:

1. Stresses beyond those listed may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

2. The input and output voltage ratings may be exceeded if the input and output clamp current ratings are observed.

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Philips Semiconductors Preliminary specification

PDIUSBH11Universal Serial Bus hub

1996 Nov 12

DC ELECTRICAL CHARACTERISTICS (DIGITAL PINS)

LIMITS

SYMBOL

PARAMETER

TEST CONDITIONS Temp = 0°C to +70°C UNIT

MIN TYP MAX

Input Levels:

HIGH level input voltage 0.9 V

LOW level input voltage 2.5 V

VTLH LOW to HIGH threshold voltage ST (Schmitt Trigger) pins 80 %V

VTHL HIGH to LOW threshold voltage ST (Schmitt Trigger) pins 20 %V

VHYS Hysteresis voltage ST (Schmitt Trigger) pins 1.1 V

Output Levels:

= rated drive 0.4

VOHHIGH level output

IOL = 20µA 0.1

= rated drive VCC –0.4

VOLLOW level output

IOH = 20µA VCC –0.1

Leakage Current:

CCS

Supply current in Suspend Oscillator stopped 100 µA

Input leakage current

1 µA

3-State output OFF-state current OD (Open Drain) pins 5 µA

DC ELECTRICAL CHARACTERISTICS (AI/O PINS)

LIMITS

SYMBOL

PARAMETER

TEST CONDITIONS Temp = 0°C to +70°C UNIT

MIN MAX

Leakage Current:

Hi–Z state data line leakage 0V < VIN < 3.3V 10 µA

Input Levels:

VDI Differential input sensitivity |(D+) – (D–)|

0.2 V

VCM Differential common mode range Includes VDI range 0.8 2.5 V

VSE Single ended receiver threshold 0.8 2.0 V

Output Levels:

Static output LOW

RL of 1.5K to 3.6V

0.3 V

Static output HIGH

RL of 1.5K to GND

2.8 3.6 V

Capacitance:

Transceiver capacitance

Pin to GND 20 pF

Output Resistance:

ZDRV

Driver output resistance Steady state drive 28 43



NOTES:

1. D+ is the generic symbol for the USB positive data pins: UP_DP, DN2_DP, DN3_DP, DN4_DP, DN5_DP. D– is the generic symbol for the USB negative data pins: UP_DM, DN2_DM, DN3_DM, DN4_DM, DN5_DM.

2. Includes external resistors of 24 1% each on D+ and D–.

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Philips Semiconductors Preliminary specification

PDIUSBH11Universal Serial Bus hub

1996 Nov 12

LOAD FOR D+/D–

D. U. T.

TEST POINT

CL = 50pF, FULL SPEED C

= 50 pF, LOW SPEED (MIN TIMING)

= 350pF, LOW SPEED (MAX TIMING)

* 1.5K OHM ON D– (LOW SPEED) OR D+ (FULL SPEED) ONLY

TEST

D–/LS D+/LS D–/FS D+/FS

CLOSE OPEN OPEN CLOSE

24 OHM

1.5K OHM*

SV00237

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Philips Semiconductors Preliminary specification

PDIUSBH11Universal Serial Bus hub

1996 Nov 12

APPLICATION DIAGRAM

I2C

ENABLE LED

POWER SWITCH AND OVERCURRENT CIRCUIT

SWITCHED 5V

H11

µC

12MHz

48MHz

USB DOWNSTREAM

USB UPSTREAM

3.3V

SV00227

I2C Interface.

The I

C bus is used to interface to an external micro–controller needed to control the operation of the hub. For cost consideration, the target system microcontroller can be shared and utilized for this purpose. The PDIUSBH11 implements a slave I

C interface. When the PDIUSBH11 needs to communicate with the microcontroller it asserts an interrupt signal. The microcontroller services this interrupt by reading the appropriate status register on the PDIUSBH11 through the I

C bus. (For more information about the

C serial bus, refer to I2C handbook. Philips order number 9397

750 00013). The I

C interface on the PDIUSBH11 defines two types of

transactions :

1. command transaction

A command transaction is used to define which data (ex. 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.

2. 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 PDIUSBH11 and the controller

ADDRESS TABLE

TYPE OF ADDRESS

PHYSICAL ADDRESS

(MSB to LSB)

Command 0011 011 (binary)

Data 0011 010 (binary)

Protocol

An I

C 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 PDIUSBH11.

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 ‘master writes data to slave’ (=‘0’) the bytes are received, acknowledged and passed on to the Memory Management Unit. If the RW bit in the address indicates a ‘master reads data from slave’ (=‘1’) the PDIUSBH11 will send data to the master. The I

C–master must acknowledge all data bytes except the last one. In this way the I

C 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.

Timing

When the master writes data to the PDIUSBH11, the data is sampled 1 micro–second after the rising edge of SCL. When the PDIUSBH11 writes data to the master, the data is driven 1 micro–second after the falling edge of SCL.

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Philips Semiconductors Preliminary specification

PDIUSBH11Universal Serial Bus hub

1996 Nov 12

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

RECIPIENT CODING DATA PHASE

Initialization Commands

Set Address / Enable Hub D0h Write 1 byte

Embedded Function D1h Write 1 byte

Set Endpoint Enable Hub + Embedded Function D8h Write 1 byte

Data Flow Commands

Read Intereupt Register F4h Read 1 byte

Read Endpoint Status Hub Control OUT 40h Read 1 byte

Hub Control IN 41h Read 1 byte

Embedded Function Control OUT 42h Read 1 byte

Embedded Function Control IN 43h Read 1 byte

Embedded Function Interrupt 44h Read 1 byte

Select Endpoint Hub Control OUT 00h Read 1 byte (optional)

Hub Control IN 01h Read 1 byte (optional)

Embedded Function Control OUT 02h Read 1 byte (optional)

Embedded Function Control IN 03h Read 1 byte (optional)

Embedded Function Interrupt 04h Read 1 byte (optional) Read Buffer Selected Endpoint F0h Read n bytes Write Buffer Selected Endpoint F0h Write n bytes

Set Endpoint Status Hub Control OUT 40h Write 1 byte

Hub Control IN 41h Write 1 byte

Embedded Function Control OUT 42h Write 1 byte

Embedded Function Control IN 43h Write 1 byte

Embedded Function Interrupt 44h Write 1 byte

Acknowledge Setup Selected Endpoint F1h None

Clear Buffer Selected Endpoint F2h None

Validate Buffer Selected Endpoint FAh None

Hub Commands

Clear Port Feature Port 2 E0h Write 1 byte

Port 3 E1h Write 1 byte Port 4 E2h Write 1 byte Port 5 E3h Write 1 byte

Set Port Feature Port 2 E8h Write 1 byte

Port 3 E9h Write 1 byte Port 4 EAh Write 1 byte Port 5 EBh Write 1 byte

Get Port Status Port 2 E0h Read 1 or 2 bytes

Port 3 E1h Read 1 or 2 bytes Port 4 E2h Read 1 or 2 bytes Port 5 E3h Read 1 or 2 bytes

Set Status Change Bits E7h Write 1 byte

General Commands

Send Resume F6h None

Read Current Frame Number F5h Read 1 or 2 bytes

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Philips Semiconductors Preliminary specification

PDIUSBH11Universal Serial Bus hub

1996 Nov 12

SO32: plastic small outline package; 32 leads; body width 7.5mm SOT287-1

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Philips Semiconductors Preliminary specification

PDIUSBH11Universal Serial Bus hub

1996 Nov 12

SDIP32: plastic shrink dual in-line package; 32 leads (400 mil) SOT232-1

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Philips Semiconductors Preliminary specification

PDIUSBH11Universal Serial Bus hub

1996 Nov 12

NOTES

Page 14

Philips Semiconductors Preliminary specification

PDIUSBH11Universal Serial Bus hub

Philips Semiconductors and Philips Electronics North America Corporation reserve the right to make changes, without notice, in the products, including circuits, standard cells, and/or software, described or contained herein in order to improve design and/or performance. Philips Semiconductors assumes no responsibility or liability for the use of any of these products, conveys no license or title under any patent, copyright, or mask work right to these products, and makes no representations or warranties that these products are free from patent, copyright, or mask work right infringement, unless otherwise specified. Applications that are described herein for any of these products are for illustrative purposes only. Philips Semiconductors makes no representation or warranty that such applications will be suitable for the specified use without further testing or modification.

LIFE SUPPORT APPLICATIONS Philips Semiconductors and Philips Electronics North America Corporation Products are not designed for use in life support appliances, devices, or systems where malfunction of a Philips Semiconductors and Philips Electronics North America Corporation Product can reasonably be expected

to result in a personal injury. Philips Semiconductors and Philips Electronics North America Corporation customers using or selling Philips Semiconductors and Philips Electronics North America Corporation Products for use in such applications do so at their own risk and agree to fully indemnify Philips Semiconductors and Philips Electronics North America Corporation for any damages resulting from such improper use or sale.

This data sheet contains preliminary data, and supplementary data will be published at a later date. Philips Semiconductors reserves the right to make changes at any time without notice in order to improve design and supply the best possible product.

Philips Semiconductors 811 East Arques Avenue P.O. Box 3409 Sunnyvale, California 94088–3409 Telephone 800-234-7381

DEFINITIONS

Data Sheet Identification Product Status Definition

Objective Specification

Preliminary Specification

Product Specification

Formative or in Design

Preproduction Product

Full Production

This data sheet contains the design target or goal specifications for product development. Specifications may change in any manner without notice.

This data sheet contains Final Specifications. Philips Semiconductors reserves the right to make changes at any time without notice, in order to improve design and supply the best possible product.

Philips Semiconductors and Philips Electronics North America Corporation

 Copyright Philips Electronics North America Corporation 1996

Date of release: 10–96

Document order number: 9397 750 01428