Philips ISP1122 manual

ISP1122

Universal Serial Bus stand-alone hub

Rev. 03 — 29 March 2000 Product speciﬁcation

c

c

1. General description

The ISP1122 is a stand-alone Universal Serial Bus (USB) hub device which complies

with

USB Speciﬁcation Rev. 1.1

. It integrates a Serial Interface Engine (SIE), hub

repeater, hub controller,USB data transceivers and a 3.3 V voltage regulator. It has a

conﬁgurable number of downstream ports, ranging from 2 to 5.

The ISP1122 can be bus-powered, self-powered or hybrid-powered. When it is

hybrid-powered the hub functions are poweredby the upstream power supply (VBUS),

but the downstream ports are powered by an external 5 Volt supply. The low power

consumption in ‘suspend’ mode allows easy design of equipment that is compliant

with the ACPI™, OnNow™ and USB power management requirements.

The ISP1122 has built-in overcurrent sense inputs, supporting individual and global

overcurrent protection for downstream ports. All ports (including the hub) have

GoodLink™ indicator outputs for easy visual monitoring of USB trafﬁc. The ISP1122

has a serial I2C-bus interface forexternal EEPROM access and a reduced frequency

(6 MHz) crystal oscillator. These features allow signiﬁcant cost savings in system

design and easy implementation of advanced USB functionality into PC peripherals.

2. Features

■High performance USB hub device with integrated hub repeater, hub controller,

Serial Interface Engine (SIE), data transceivers and 3.3 V voltage regulator

■Complies with

Universal Serial Bus Speciﬁcation Rev. 1.1

and ACPI, OnNow and

USB power management requirements

■Conﬁgurable from 2 to 5 downstream ports with automatic speed detection

■Internal power-on reset and low voltage reset circuit

■Supports bus-powered, hybrid-powered and self-powered application

■Individual or ganged power switching for downstream ports

■Individual or global port overcurrent protection with built-in sense circuits

■6 MHz crystal oscillator with on-chip PLL for low EMI

■Visual USB trafﬁc monitoring (GoodLink™) for hub and downstream ports

■I2C-bus interface to read vendor ID, product ID and conﬁguration bits from

external EEPROM

■Operation over the extended USB bus voltage range (4.0to 5.5 V)

■Operating temperature range −40 to +85 °C

■8 kV in-circuit ESD protection for lower cost of external components

Contents

Main ISP1122 Universal Serial Bus stand-alone hub Universal Serial Bus Specication Rev. 1.1 USB Specication Rev. 1.1 Rev. 03 29 March 2000 Product specication 3. Ordering information 4. Block diagram This is a conceptual block diagram and does not include each individual signal. th ISP1122 5. Pinning information 5.1 ISP1122D (SO32) and ISP1122NB (SDIP32) Fig 2. Pin conguration SO32. Fig 3. Pin conguration SDIP32. 5.1.2 Pin description 5.1.1 Pinning Page Page 5.2 ISP1122BD (LQFP32) 5.2.1 Pinning Fig 4. Pin conguration LQFP32. 5.2.2 Pin description ISP1122BD Page 6. Functional description 6.1 Analog transceivers USB Specication Rev. 1.1 6.2 Philips Serial Interface Engine (SIE) 6.3 Hub repeater USB Specication Rev. 1.1 6.4 End-of-frame timers 6.5 General and individual port controller 7. Modes of operation Philips Semiconductors ISP1122 8. Endpoint descriptions 8.1 Hub endpoint 0 (control) 8.2 Hub endpoint 1 (interrupt) Philips Semiconductors ISP1122 9. Host requests 9.1 Standard requests 9.2 Hub specic requests Page 9.3 Descriptors The ISP1122 hub controller supports the following standard USB descriptors: USB Specication Rev. 1.1 Page USB Specication Rev. 1.0 9.4 Hub responses Page 10. I2C-bus interface 10.1 Protocol C-bus and how to use it The I 10.2 Hardware connections 10.3 Data transfer Philips Semiconductors ISP1122 11. Hub power modes USB Specication Rev.1.1 11.1 Voltage drop requirements 12. Overcurrent detection 12.1 Overcurrent circuit description 12.2 Power switch selection 12.3 Tuning the overcurrent trip voltage 12.4 Reference circuits Power switches 1 to 5 are low-ohmic PMOS devices as specied inSection 12.2. ISP1122 Fig 10. Mode 5: self-powered hub; individual port power switching; individual overcurrent detection. Power switch is low-ohmic PMOS device as specied inSection 12.2. Fig 11. Mode 1: self-powered hub; ganged port power switching; global overcurrent detection. Power switches 1 to 4 are low-ohmic PMOS devices as specied inSection 12.2. Fig 12. Mode 4: bus-powered hub; individual port power switching; individual overcurrent detection. Product specication Rev. 03 29 March 2000 29 of 48 Power switch is low-ohmic PMOS device as specied inSection 12.2. Fig 13. Mode 0: bus-powered hub; ganged port power switching; global overcurrent detection. 13. Limiting values In accordance with the Absolute Maximum Rating System (IEC 60134). 14. Static characteristics 15. Dynamic characteristics =0V;T on D = 1.5 k C; C = 50 pF; R =0V;T on D = 1.5 k C; C = 50 pF; R Fig 15. Source differential data jitter. Fig 16. Source differential data-to-EOP transition skew and EOP width. Fig 17. Receiver differential data jitter. Fig 18. Receiver SE0 width tolerance. Fig 19. Hub differential data delay and SOP distortion. [1] fSCL =164fXTAL. [2] Rise time is determined by Cb and pull-up resistor value Rp (typ. 4.7 k). Fig 20. Hub EOP delay and EOP skew. DD SS IH IL 16. Test information Fig 22. Load impedance for D+ and D- pins. Fig 21. I2C-bus timing. 17. Package outline Fig 23. SO32 package outline. SO32: plastic small outline package; 32 leads; body width 7.5 mm SOT287-1 SDIP32: plastic shrink dual in-line package; 32 leads (400 mil) SOT232-1 Fig 24. SDIP32 package outline. LQFP32: plastic low profile quad flat package; 32 leads; body 7 x 7 x 1.4 mm SOT358-1 Fig 25. LQFP32 package outline. c 18. Soldering 18.1 Introduction Data Handbook IC26; Integrated Circuit Packages 18.2 Surface mount packages 18.3 Through-hole mount packages 18.4 Package related soldering information 19. Revision history 20. Data sheet status 21. Denitions 22. Disclaimers 23. Licenses 24. Trademarks Philips Semiconductors - a worldwide company Internet: http://www.semiconductors.philips.com Contents