* Board: akae2440
* environment: bootloader & ADS
* Author: akaedu
* Date: 2009-5-26
* web:
*
*
* GPIO address_MAP
*
* CPLD_MAP_BASE physical address is 0x20800000
* CPLD_LED physical address is 0x20800000
* CPLD_SEG physical address is 0x20800080
* CPLD_DIP physical address is 0x208000a0
*
* GPIO port_MAP
*
* GPA_PORT~GPB_PORT(130 multi-functional input port pins)
* GPIO_BASE : GPACON : 0x56000000
*
* NAME GPIO CPLD_IN CPLD_OUT GPIO_CON MODE_bit_CON GPIO_DAT MODE_bit_DAT
* BEEP GPB0 TOUT0(GPB0) BEEP 0x56000010 [1:0] 0x56000014 [0]
*
* GPIO key_scn_MAP
*
* NAME PORT_OUT PORT_IN
* KEY(sw1) KBOUT1 : GPB8 KBIN1 : ENT0 : GPF0
* KEY(sw2) KBOUT0 : GPB9 KBIN1 : ENT0 : GPF0
* KEY(sw3) KBOUT1 : GPB8 KBIN0 : ENT2 : GPF2
* KEY(sw4) KBOUT1 : GPB8 KBIN1 : ENT2 : GPF2
*
* GPIO_CON GPIO_DAT GPIO MODE_bit_CON MODE_bit_DAT
* GPBCON : 0x56000010 GPBDAT : 0x56000014 GPB8 [17:16] [8]
* GPBCON : 0x56000010 GPBDAT : 0x56000014 GPB9 [19:18] [9]
* GPFCON : 0x56000050 GPBDAT : 0x56000054 GPF0 [1:0] [0]
* GPFCON : 0x56000050 GPBDAT : 0x56000054 GPF2 [5:4] [2]
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