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OS-9 for the Prospector P1100 Board Guide

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<strong>Board</strong>-Specific Reference<br />

Table 2-4 GPIO Usage of <strong>the</strong> <strong>Board</strong> (continued)<br />

GPIO Signal Name Direct Description<br />

GPIO19 RTS3 Output RTS SA11X0 uart 3 (not<br />

needed)<br />

GPIO20 LED0 Output SMD LED D3 on board<br />

GPIO21 LED1 Output SMD LED D2 on board<br />

GPIO22 LED2 Output SMD LED D1 on board<br />

GPIO23 IRDA ON Output 0 IRDA On, 1 IRDA Off<br />

GPIO24 LED4/PNL_ENA In/Out External GPIO on J7, P38,<br />

Panel Enable<br />

GPIO25 LED5 In/Out External GPIO on J7, P36<br />

GPIO26 LED6 In/Out External GPIO on J7, P34<br />

GPIO27 LED7 In/Out External GPIO on J7, P32<br />

GPIO Interrupt Polarity<br />

When GPIOs are used as interrupt sources, <strong>the</strong> _PIC_ENABLE() function<br />

will set default polarity to rising edge (GRER) along with enabling <strong>the</strong><br />

interrupt at <strong>the</strong> SA11X0 PIC. If falling edge is required, software must<br />

assert <strong>the</strong> appropriate bit in <strong>the</strong> GFER and negate <strong>the</strong> corresponding bit in<br />

<strong>the</strong> GRER.<br />

<strong>OS</strong>-9 <strong>for</strong> <strong>the</strong> <strong>Prospector</strong> <strong>P1100</strong> <strong>Board</strong> <strong>Guide</strong> 47<br />

2

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