k60 flex bus 32位数据总线配置例程

hebsjx · 发表于 2015-10-21 16:18:29

求助，K60 32位flex bus 总线配置，按照英文data sheet进行了设置，和IO分配。缺少验证void InitFlexBus(void){
//==========================================================//
//Set bank0 Base address=IS61LV25616
FB_CSAR0 = (uint32)FB_START_ADDRESS_CS0;

FB_CSCR0  = FB_CSCR_PS(2)    // 16-bit port
            //| FB_CSCR_BLS_MASK
            | FB_CSCR_AA_MASK    // auto-acknowledge
            | FB_CSCR_ASET(0x0) // assert chip select on first clock edge after address is asserted
            | FB_CSCR_WS(0x1)    // 1 wait state - may need a wait state depending on the bus speed
            ;

FB_CSMR0  = FB_CSMR_BAM(0xff)  //Set base address mask for 512K address space
            | FB_CSMR_V_MASK    //Enable cs signal
            ;

//==========================================================//
//Set bank1 Base address =EP3C10 U3
FB_CSAR1 = (uint32)FB_START_ADDRESS_CS1;

FB_CSCR1  = FB_CSCR_PS(0) // 32-bit port 20151016 modi
            | FB_CSCR_AA_MASK // auto-acknowledge
            | FB_CSCR_ASET(0x0)  // assert chip select on first clock edge after address is asserted
            | FB_CSCR_WS(0x1) // 1 wait state - may need a wait state depending on the bus speed
            ;

FB_CSMR1  = FB_CSMR_BAM(0xff)  //Set base address mask for 512K address space
            | FB_CSMR_V_MASK    //Enable cs signal
            ;
//enable CS1 signals
FB_CSPMCR = FB_CSPMCR_GROUP1(1);

//==========================================================//
//fb clock divider 2 96M/2=48M
SIM_CLKDIV1 |= SIM_CLKDIV1_OUTDIV3(1);

//Configure the pins needed to FlexBus Function (Alt 5/6)//
//address
PORTD_PCR8  = PORT_PCR_MUX(6);          //  fb_ad[1] used as addr[17]
PORTD_PCR9  = PORT_PCR_MUX(6);          //  fb_ad[1] used as addr[18]

PORTA_PCR29 = PORT_PCR_MUX(6);          //  fb_ad[1] used as addr[24]
PORTA_PCR28 = PORT_PCR_MUX(6);          //  fb_ad[1] used as addr[25]
PORTA_PCR27 = PORT_PCR_MUX(6);          //  fb_ad[1] used as addr[26]
PORTA_PCR26 = PORT_PCR_MUX(6);          //  fb_ad[1] used as addr[27]
PORTA_PCR25 = PORT_PCR_MUX(6);          //  fb_ad[1] used as addr[28]
PORTA_PCR24 = PORT_PCR_MUX(6);          //  fb_ad[1] used as addr[29]

//32-BIT PORT DATA 24-31
PORTB_PCR20 = PORT_PCR_MUX(5);          //  fb_ad[31] used as d[31]
PORTB_PCR21 = PORT_PCR_MUX(5);          //  fb_ad[30] used as d[30]
PORTB_PCR22 = PORT_PCR_MUX(5);          //  fb_ad[29] used as d[29]
PORTB_PCR23 = PORT_PCR_MUX(5);          //  fb_ad[28] used as d[28]
PORTC_PCR12 = PORT_PCR_MUX(5);          //  fb_ad[27] used as d[27]
PORTC_PCR13 = PORT_PCR_MUX(5);          //  fb_ad[26] used as d[26]
PORTC_PCR14 = PORT_PCR_MUX(5);          //  fb_ad[25] used as d[25]
PORTC_PCR15 = PORT_PCR_MUX(5);          //  fb_ad[24] used as d[24]
//32-BIT PORT DATA 16-23
PORTB_PCR6  = PORT_PCR_MUX(5);          //  fb_ad[23] used as d[23]
PORTB_PCR7  = PORT_PCR_MUX(5);          //  fb_ad[22] used as d[22]
PORTB_PCR8  = PORT_PCR_MUX(5);          //  fb_ad[21] used as d[21]
PORTB_PCR9  = PORT_PCR_MUX(5);          //  fb_ad[20] used as d[20]
PORTB_PCR10 = PORT_PCR_MUX(5);          //  fb_ad[19] used as d[19]
PORTB_PCR11 = PORT_PCR_MUX(5);          //  fb_ad[18] used as d[18]
PORTB_PCR16 = PORT_PCR_MUX(5);          //  fb_ad[17] used as d[17]
PORTB_PCR17 = PORT_PCR_MUX(5);          //  fb_ad[16] used as d[16]
//32-BIT PORT DATA 8-15
PORTB_PCR18 = PORT_PCR_MUX(5);          //  fb_ad[15] used as d[15]
PORTC_PCR0  = PORT_PCR_MUX(5);          //  fb_ad[14] used as d[14]
PORTC_PCR1  = PORT_PCR_MUX(5);          //  fb_ad[13] used as d[13]
PORTC_PCR2  = PORT_PCR_MUX(5);          //  fb_ad[12] used as d[12]
PORTC_PCR4  = PORT_PCR_MUX(5);          //  fb_ad[11] used as d[11]
PORTC_PCR5  = PORT_PCR_MUX(5);          //  fb_ad[10] used as d[10]
PORTC_PCR6  = PORT_PCR_MUX(5);          //  fb_ad[9] used as d[9]
PORTC_PCR7  = PORT_PCR_MUX(5);          //  fb_ad[8] used as d[8]
//32-BIT PORT DATA 0-7
PORTC_PCR8  = PORT_PCR_MUX(5);          //  fb_ad[7] used as d[7]
PORTC_PCR9  = PORT_PCR_MUX(5);          //  fb_ad[6] used as d[6]
PORTC_PCR10 = PORT_PCR_MUX(5);          //  fb_ad[5] used as d[5]

PORTD_PCR2  = PORT_PCR_MUX(5);          //  fb_ad[4] used as d[4]
PORTD_PCR3  = PORT_PCR_MUX(5);          //  fb_ad[3] used as d[3]
PORTD_PCR4  = PORT_PCR_MUX(5);          //  fb_ad[2] used as d[2]
PORTD_PCR5  = PORT_PCR_MUX(5);          //  fb_ad[1] used as d[1]
PORTD_PCR6  = PORT_PCR_MUX(5);          //  fb_ad[0] used as d[0]

//control signals
PORTB_PCR19 = PORT_PCR_MUX(5);       // fb_oe_b
PORTC_PCR11 = PORT_PCR_MUX(5);       // fb_rw_b
PORTD_PCR1  = PORT_PCR_MUX(5);       // fb_cs0_b
PORTD_PCR0  = PORT_PCR_MUX(5);       // fb_cs1_b
//PORTC_PCR18 = PORT_PCR_MUX(5);       // fb_cs2_b
}

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