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Philips ISP1122 10.2 Hardware connections, 10.3 Data transfer

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Philips Semiconductors ISP1122

USB stand-alone hub

Product speciﬁcation Rev. 03 — 29 March 2000 21 of 48

9397 750 07002 © Philips Electronics N.V. 2000. All rights reserved.

10.2 Hardware connections

Via the I2C-bus interface the ISP1122 can be connected to an external EEPROM

(PCF8582 or equivalent). The hardware connections are shown in Figure 5.

The SCL and SDA pins are multiplexed with pins OPTION and INDV respectively.

The slave address which ISP1122 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).

10.3 Data transfer

When the ISP1122 is reset, the I2C-bus interfacetr ies to read 6 bytesof conﬁguration

data from an external EEPROM. If no response is detected, the levelson inputs SDA

and SCL are interpreted as INDV and OPTION to select the operating mode (see

Tab le 4).

The data in the EEPROM memory are organized as shown in Tab le 22 .

[1] Vendor ID code in the Device descriptor, see Tabl e 10.

[2] Product ID code in the Device descriptor, seeTab le 10 .

Fig 5. EEPROM connection diagram.

i

dth

MGR780

INDV/SDA

OPTION/SCL

A1

A2

A0

SDA

SCL

VDD

RP

RP

VDD

ISP1122

USB HUB

PCF8582

EEPROM

or

equivalent

I2C-bus

Table 22: EEPROM organization

Address

(Hex) Default value

(Hex) Contents

00 CC idVendor[1] (lower byte)

01 04 idVendor[1] (upper byte)

02 22 idProduct[2] (lower byte)

03 11 idProduct[2] (upper byte)

04 - conﬁguration bits C7 to C0; see Tab le 23

05 AA signature

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