Nxp-semiconductors PCA9600 OM6293 Manual do Utilizador descarregar pdf (Página 7)

User manual Rev. 01 — 15 December 2008 7 of 9

NXP Semiconductors

UM10323

PCA9600 demonstration board OM6293

Ensure that the 5 V power selection jumper is fitted between pins 2 and 3 on header J1 or

that some alternative logic supply voltage is connected to pin 2 on J1 so that there is a

supply voltage for the I

C-bus on the Sx/Sy side of this ‘remote’ board. The cable bus

signals will be converted back to conventional I

C-bus levels by the ‘remote’

P82B96/PCA9600 and both the cable bus and I

C-bus signals are available for probing on

the 8-pin header J2. They are also available on the 9-pin header CON4 in the same

format as on the I2C 2005-1 expansion header.

Note that only the ‘switched 5 V’ supply from the I2C 2005-1 board is used on

CON1/CON2. The un-switched 5 V and 3.3 V supplies are not available on the Cat5e

cable and therefore are not available on CON4 in modes where boards are linked only by

the Cat5e cable.

For further details on this setup, refer to Application Note AN10658, section 3.2.

7. Abbreviations

8. References

[1] AN10658, Sending I

C-bus signals via long communications cables —

NXP Semiconductors; application note;

www.nxp.com/acrobat/applicationnotes/AN10658

[2] PCA9600, Dual bidirectional bus buffer — NXP Semiconductors;

Product data sheet; www.nxp.com/pip/PCA9600

Table 2. Abbreviations

Acronym Description

DIP Dual In-line Package

ESD ElectroStatic Discharge

Fm+ Fast-mode Plus

C-bus Inter-Integrated Circuit bus

IC Integrated Circuit

LED Light-Emitting Diode

PC Personal Computer

SMBus System Management Bus

SMD Surface Mount Device

1 2 3 4 5 6 7 8 9

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