Signal Descriptions

A.12 RealView Logic Tile header connectors

Figure A-14 shows the pin numbers and power-blade usage of the HDRX, HDRY, and HDRZ headers on the PB926EJ-S.

Figure A-14 HDRX, HDRY, and HDRZ (upper) pin numbering

Caution

The I/O voltage on some pins of RealView Logic Tiles can be programmed by changing resistors on the tile. Signals between RealView Logic Tiles can be altered safely if both the sending and receiving tile use the same voltage.

However, all signals from the tile mounted on the expansion headers and the PB926EJ-Smust use 3.3V I/O levels.

All signals from the PB926EJ-S to the tile use 3.3V I/O levels. The 5V supply on the headers is to power voltage converters that might be present on the expansion tile.

HDRX (J9) signals on page A-18,HDRY (J12) signals on page A-22, and HDRZ (J8) signals on page A-26 list the signals on each header pin. See Appendix F RealView Logic Tile and the ARM LT-XC2V4000+ RealView Logic Tile User Guide for more information on RealView Logic Tile signals.

ARM DUI 0224I

Copyright © 2003-2010 ARM Limited. All rights reserved.

A-17

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ARM ARM DUI 0224I manual RealView Logic Tile header connectors, Figure A-14 HDRX, HDRY, and Hdrz upper pin numbering