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| Hardware Setup |
By Pass Function: |
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| LAN Bypass | Normal |
GPIO38 | "High" | "Low" |
GPIO39 | "High" | "Low" |
LAN Bypass function is controlled by GPIO 38 and 39.
For LAN Bypass Group 1 (LAN1 & LAN2), it is defined by GPIO38, set “High” to enable and set “Low” to disable.
For LAN Bypass Group 2 (LAN3 & LAN4), it is defined by GPIO39, set “High¨ to enable and set “Low” to disable.
Set “High” sample code (Assembly): |
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mov | dx,GPIO_Port + 38h | ;GPIO_Port is 480h |
in | al,dx |
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newiodelay |
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or | al,11000000b | ;GPIO 38, 39 pull high to enable |
out | dx,al |
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Set “High” sample code (C Language):
//Set High |
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unsigned char | dataIn; |
unsigned char | dataOut; |
dataIn = inportb(0x480+0x38); dataIn = 0xc0; outportb(dataIn, 0x480+0x38);
LAN5, LAN6 have no by pass function. | |
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