Philips ISP1122A Product Data
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Philips ISP1122A Product Data

Universal serial bus stand-alone hub
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1. General description

2. Features

ISP1122A
Universal Serial Bus stand-alone hub
Rev. 03 — 30 October 2001
The ISP1122A 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 ISP1122A can be bus-powered, self-powered or hybrid-powered. When it is
hybrid-powered the hub functions are powered by the upstream power supply (V
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 ISP1122A 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 ISP1122A
2
has a serial I
C-bus interface for external 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.
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
2
I
C-bus interface to read vendor ID, product ID and configuration bits from
external EEPROM
Operation over the extended USB bus voltage range (4.0 to 5.5 V)
Operating temperature range −40 to +85 °C
8 kV in-circuit ESD protection for lower cost of external components
Full-scan design with high test coverage
Available in 32-pin SDIP, SO and LQFP packages.
Product data
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BUS

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Summary of Contents for Philips ISP1122A

  • Page 1: General Description

    Product data 1. General description The ISP1122A 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.

  • Page 2: Ordering Information

    This is a conceptual block diagram and does not include each individual signal. Fig 1. Block diagram. 9397 750 08958 © Koninklijke Philips Electronics N.V. 2001. All rights reserved. Product data Rev. 03 — 30 October 2001 2 of 48...

  • Page 3: Pinning Information

    1 (analog AI/I overcurrent sense input for downstream port 2 (analog 9397 750 08958 © Koninklijke Philips Electronics N.V. 2001. All rights reserved. Product data Rev. 03 — 30 October 2001 3 of 48...
  • Page 4 5 D+ connection (analog) AI/O downstream port 1 D− connection (analog) AI/O downstream port 1 D+ connection (analog) 9397 750 08958 © Koninklijke Philips Electronics N.V. 2001. All rights reserved. Product data Rev. 03 — 30 October 2001 4 of 48...
  • Page 5 (TTL level). Downstream ports 1 and 2 cannot be disabled. 9397 750 08958 © Koninklijke Philips Electronics N.V. 2001. All rights reserved. Product data Rev. 03 — 30 October 2001 5 of 48...

  • Page 6: Isp1122Abd (Lqfp32)

    3 (analog AI/I overcurrent sense input for downstream port 4 (analog 9397 750 08958 © Koninklijke Philips Electronics N.V. 2001. All rights reserved. Product data Rev. 03 — 30 October 2001 6 of 48...
  • Page 7 1 D+ connection (analog) AI/O upstream port D− connection (analog) AI/O upstream port D+ connection (analog) 9397 750 08958 © Koninklijke Philips Electronics N.V. 2001. All rights reserved. Product data Rev. 03 — 30 October 2001 7 of 48...

  • Page 8: Functional Description

    Downstream ports 1 and 2 cannot be disabled. 6. Functional description The ISP1122A is a stand-alone USB hub with up to 5 downstream ports. The number of ports can be configured between 2 and 5. The downstream ports can be used to connect low-speed or full-speed USB peripherals.

  • Page 9: Philips Serial Interface Engine (Sie)

    LED can be directly connected via an external 330 Ω resistor. During enumeration the LED blinks on momentarily. After successful configuration of the ISP1122A, the LED is permanently on. The LED blinks off for 100 ms upon each successful packet transfer (with ACK). The hub GoodLink indicator blinks when the hub receives a packet addressed to it.

  • Page 10: Pll Clock Multiplier

    I C-bus EEPROM (e.g. Philips PCF8582 or equivalent). At reset the ISP1122A reads 6 bytes of data from the external memory. The I C-bus interface timing complies with the standard mode of operation as described in The I C-bus and how to use it , order number 9398 393 40011.

  • Page 11: Endpoint Descriptions

    String descriptor. 8.2 Hub endpoint 1 (interrupt) Endpoint 1 is used by the ISP1122A hub to provide status change information to the host. This endpoint can be accessed only after the hub has been configured by the host (by sending the Set Configuration command).

  • Page 12: Host Requests

    9. Host requests The ISP1122A handles all standard USB requests from the host via control endpoint 0. The control endpoint can handle a maximum of 64 bytes per transfer. Remark: Please note that the USB data transmission order is Least Significant Bit (LSB) first.

  • Page 13: Hub Specific Requests

    STALL Device address: 0 to 127. Returned value in bytes. MSB specifies endpoint direction: 0 = OUT, 1 = IN. The ISP1122A accepts either value. 9.2 Hub specific requests Table 8 the supported hub specific requests are listed, as well as some unsupported requests.
  • Page 14 C_PORT_OVERCURRENT not used clears port overcurrent change bit C_PORT_RESET not used clears port reset change bit 9397 750 08958 © Koninklijke Philips Electronics N.V. 2001. All rights reserved. Product data Rev. 03 — 30 October 2001 14 of 48...

  • Page 15: Descriptors

    ISP1122A Philips Semiconductors USB stand-alone hub 9.3 Descriptors The ISP1122A hub controller supports the following standard USB descriptors: • Device • Configuration • Interface • Endpoint • • String. Table 10: Device descriptor Values in square brackets are optional. Offset...
  • Page 16 1, direction: IN bmAttributes interrupt endpoint wMaxPacketSize 01, 00 packet size = 1 byte bInterval polling interval (255 ms) 9397 750 08958 © Koninklijke Philips Electronics N.V. 2001. All rights reserved. Product data Rev. 03 — 30 October 2001 16 of 48...
  • Page 17 USB Specification Rev. 1.0 ISP1122A always reports power management status on an individual basis, even for ganged/global modes. This is compliant with USB Specification Rev. 1.1 . Condition with no overcurrent detection is reported to the host.

  • Page 18: Hub Responses

    0 no change in overcurrent condition overcurrent condition changed 18 to 31 reserved 9397 750 08958 © Koninklijke Philips Electronics N.V. 2001. All rights reserved. Product data Rev. 03 — 30 October 2001 18 of 48...

  • Page 19: Get Port Status

    5 to 15 reserved 9397 750 08958 © Koninklijke Philips Electronics N.V. 2001. All rights reserved. Product data Rev. 03 — 30 October 2001 19 of 48...

  • Page 20: Get Configuration Descriptor

    C-bus interface A simple I C-bus interface is provided in the ISP1122A to read customized vendor ID, product ID and some other configuration bits from an external EEPROM. The interface supports single master operation at a nominal bus speed of 93.75 kHz.

  • Page 21: Hardware Connections

    MBL166 Fig 5. EEPROM connection diagram. The slave address which ISP1122A uses to access the EEPROM is 1010000B. Page mode addressing is not supported, so pins A0, A1 and A2 of the EEPROM must be connected to GND (logic 0).

  • Page 22: Hub Power Modes

    Power switching of downstream ports can be done individually or ganged, where all ports are switched simultaneously with one power switch. The ISP1122A supports both modes, which can be selected using input INDV (see Table 11.1 Voltage drop requirements...

  • Page 23: Bus-Powered Hubs

    Hub PCB (power and ground traces, ferrite beads) • Power switch (FET on-resistance) • Overcurrent sense device. 9397 750 08958 © Koninklijke Philips Electronics N.V. 2001. All rights reserved. Product data Rev. 03 — 30 October 2001 23 of 48...

  • Page 24: Overcurrent Detection

    Fig 8. Typical voltage drop components in bus-powered mode (no overcurrent detection). 12. Overcurrent detection The ISP1122A has an analog overcurrent detection circuit for monitoring downstream port lines. This circuit automatically reports an overcurrent condition to the host and turns off the power to the faulty port. The host must reset the condition flag.

  • Page 25: Tuning The Overcurrent Trip Voltage

    SP/BP. This allows an automatic router to use a wide trace for V and a narrow trace to connect pin SP/BP. The following PMOS power switches have been tested to work well with the ISP1122A: Philips PHP109, Vishay Siliconix Si2301DS, Fairchild FDN338P. 9397 750 08958 ©...
  • Page 26 Power switches 1 to 5 are low-ohmic PMOS devices as specified in Section 12.2. Fig 10. Mode 5: self-powered hub; individual port power switching; individual overcurrent detection. 9397 750 08958 © Koninklijke Philips Electronics N.V. 2001. All rights reserved. Product data Rev. 03 — 30 October 2001 26 of 48...
  • Page 27 Power switch is low-ohmic PMOS device as specified in Section 12.2. Fig 11. Mode 1: self-powered hub; ganged port power switching; global overcurrent detection. 9397 750 08958 © Koninklijke Philips Electronics N.V. 2001. All rights reserved. Product data Rev. 03 — 30 October 2001 27 of 48...
  • Page 28 Power switches 1 to 4 are low-ohmic PMOS devices as specified in Section 12.2. Fig 12. Mode 4: bus-powered hub; individual port power switching; individual overcurrent detection. 9397 750 08958 © Koninklijke Philips Electronics N.V. 2001. All rights reserved. Product data Rev. 03 — 30 October 2001 28 of 48...
  • Page 29 Power switch is low-ohmic PMOS device as specified in Section 12.2. Fig 13. Mode 0: bus-powered hub; ganged port power switching; global overcurrent detection. 9397 750 08958 © Koninklijke Philips Electronics N.V. 2001. All rights reserved. Product data Rev. 03 — 30 October 2001 29 of 48...

  • Page 30: Limiting Values

    I/O pins I(AI/O) (D+/D−) open-drain output pull-up voltage O(od) −40 °C operating ambient temperature 9397 750 08958 © Koninklijke Philips Electronics N.V. 2001. All rights reserved. Product data Rev. 03 — 30 October 2001 30 of 48...

  • Page 31: Static Characteristics

    OCn pins ∆V = V − V SP/BP Bus-powered mode. Self-powered or hybrid-powered mode. 9397 750 08958 © Koninklijke Philips Electronics N.V. 2001. All rights reserved. Product data Rev. 03 — 30 October 2001 31 of 48...

  • Page 32: Dynamic Characteristics

    W(RESET) crystal oscillator stopped Crystal oscillator crystal frequency XTAL Dependent on the crystal oscillator start-up time. 9397 750 08958 © Koninklijke Philips Electronics N.V. 2001. All rights reserved. Product data Rev. 03 — 30 October 2001 32 of 48...
  • Page 33 Test circuit: see Figure Excluding the first transition from Idle state. Characterized only, not tested. Limits guaranteed by design. 9397 750 08958 © Koninklijke Philips Electronics N.V. 2001. All rights reserved. Product data Rev. 03 — 30 October 2001 33 of 48...
  • Page 34 Reference voltage for overcurrent sensing: V (bus-powered mode) or V (self-powered mode). SP/BP Fig 14. Overcurrent trip response timing. 9397 750 08958 © Koninklijke Philips Electronics N.V. 2001. All rights reserved. Product data Rev. 03 — 30 October 2001 34 of 48...
  • Page 35 USB data rate. PERIOD Fig 17. Receiver differential data jitter. 9397 750 08958 © Koninklijke Philips Electronics N.V. 2001. All rights reserved. Product data Rev. 03 — 30 October 2001 35 of 48...
  • Page 36 Full-speed timing symbols have a subscript prefix ‘F’, low-speed timings a prefix ‘L’. Fig 19. Hub differential data delay and SOP distortion. 9397 750 08958 © Koninklijke Philips Electronics N.V. 2001. All rights reserved. Product data Rev. 03 — 30 October 2001...
  • Page 37 ⁄ XTAL Rise time is determined by C and pull-up resistor value R (typ. 4.7 kΩ). 9397 750 08958 © Koninklijke Philips Electronics N.V. 2001. All rights reserved. Product data Rev. 03 — 30 October 2001 37 of 48...

  • Page 38: Test Information

    (LS): 1.5 kΩ pull-up resistor on D−. Fig 22. Load impedance for D+ and D- pins. 9397 750 08958 © Koninklijke Philips Electronics N.V. 2001. All rights reserved. Product data Rev. 03 — 30 October 2001 38 of 48...

  • Page 39: Package Outline

    OUTLINE EUROPEAN ISSUE DATE VERSION PROJECTION JEDEC EIAJ 97-05-22 SOT287-1 MO-119 99-12-27 Fig 23. SO32 package outline. 9397 750 08958 © Koninklijke Philips Electronics N.V. 2001. All rights reserved. Product data Rev. 03 — 30 October 2001 39 of 48...
  • Page 40 REFERENCES OUTLINE EUROPEAN ISSUE DATE VERSION PROJECTION JEDEC EIAJ 92-11-17 SOT232-1 95-02-04 Fig 24. SDIP32 package outline. 9397 750 08958 © Koninklijke Philips Electronics N.V. 2001. All rights reserved. Product data Rev. 03 — 30 October 2001 40 of 48...
  • Page 41 ISSUE DATE VERSION PROJECTION JEDEC EIAJ 99-12-27 SOT358 -1 136E03 MS-026 00-01-19 Fig 25. LQFP32 package outline. 9397 750 08958 © Koninklijke Philips Electronics N.V. 2001. All rights reserved. Product data Rev. 03 — 30 October 2001 41 of 48...

  • Page 42: Soldering

    – smaller than 1.27 mm, the footprint longitudinal axis must be parallel to the transport direction of the printed-circuit board. The footprint must incorporate solder thieves at the downstream end. 9397 750 08958 © Koninklijke Philips Electronics N.V. 2001. All rights reserved. Product data Rev. 03 — 30 October 2001 42 of 48...

  • Page 43: Manual Soldering

    300 °C it may remain in contact for up to 10 seconds. If the bit temperature is between 300 and 400 °C, contact may be up to 5 seconds. 9397 750 08958 © Koninklijke Philips Electronics N.V. 2001. All rights reserved. Product data Rev. 03 — 30 October 2001...

  • Page 44: Package Related Soldering Information

    0.65 mm; it is definitely not suitable for packages with a pitch (e) equal to or smaller than 0.5 mm. 9397 750 08958 © Koninklijke Philips Electronics N.V. 2001. All rights reserved. Product data Rev. 03 — 30 October 2001...

  • Page 45: Revision History

    20011030 Product data; second version; Supersedes ISP1122A-02 of June 6th, 2000. (9397 750 07175) • Added new USB basic speed logo to indicate ISP1122A as a USB-IF certified product. • Table 24 “Absolute maximum ratings” on page – Changed I to 100 mA.

  • Page 46: Data Sheet Status

    Philips Semiconductors customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Philips Semiconductors for any damages resulting from such application.
  • Page 47 For additional information, please visit http://www.semiconductors.philips.com. For sales office addresses, send e-mail to: sales.addresses@www.semiconductors.philips.com. Fax: +31 40 27 24825 9397 750 08958 © Koninklijke Philips Electronics N.V. 2001. All rights reserved. Product data Rev. 03 — 30 October 2001 47 of 48...

  • Page 48: Table Of Contents

    Package outline ......40 Philips Serial Interface Engine (SIE)..10 Soldering .

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