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K60FX150M Flexbus

Question asked by stanley Fan on Mar 29, 2018
Latest reply on Apr 2, 2018 by stanley Fan

I use the parallel slave device with the K60FX150M,the slave device(ENC624J600) is 16K * 16bit memory. 

 Flexbus used in the 16bit Mux-Mode.

My code is 

 

#define Cs0BaseAddress (*(uint16 *)(0x60000000))

void Flexbus_init()
{
SIM_SOPT2 |= SIM_SOPT2_FBSL(3);
SIM_SCGC7 |= SIM_SCGC7_FLEXBUS_MASK; //Clock Gate enable
//Pin Mux
PORTD_PCR6 = PORT_PCR_MUX(5); // fb_AD0
PORTD_PCR5 = PORT_PCR_MUX(5); // fb_AD1
PORTD_PCR4 = PORT_PCR_MUX(5); // fb_AD2
PORTD_PCR3 = PORT_PCR_MUX(5); // fb_AD3
PORTD_PCR2 = PORT_PCR_MUX(5); // fb_AD4
PORTC_PCR10 = PORT_PCR_MUX(5); // fb_AD5
PORTC_PCR9 = PORT_PCR_MUX(5); // fb_AD6
PORTC_PCR8 = PORT_PCR_MUX(5); // fb_AD7
PORTC_PCR7 = PORT_PCR_MUX(5); // fb_AD8
PORTC_PCR6 = PORT_PCR_MUX(5); // fb_AD9
PORTC_PCR5 = PORT_PCR_MUX(5); // fb_AD10
PORTC_PCR4 = PORT_PCR_MUX(5); // fb_AD11
PORTC_PCR2 = PORT_PCR_MUX(5); // fb_AD12
PORTC_PCR1 = PORT_PCR_MUX(5); // fb_AD13
PORTC_PCR0 = PORT_PCR_MUX(5); // fb_AD14
PORTB_PCR18 = PORT_PCR_MUX(5); // fb_AD15

PORTD_PCR1 = PORT_PCR_MUX(5); // fb_CS0
PORTD_PCR0 = PORT_PCR_MUX(5); // fb_ALE
PORTC_PCR11 = PORT_PCR_MUX(5); // fb_RW

PORTC_PCR18 = PORT_PCR_MUX(5); // fb_BE15-8
PORTC_PCR19 = PORT_PCR_MUX(5); // fb_BE7-0

FB_CSAR0 =(uint32)&Cs0BaseAddress; //Set Base address

FB_CSCR0 = FB_CSCR_BLS_MASK // set byte lane shift
| FB_CSCR_PS(2) // 16-bit port
| FB_CSCR_ASET(0x1) // assert chip select on second clock edge after address is asserted
| FB_CSCR_AA_MASK
| FB_CSCR_RDAH(1)
| FB_CSCR_WRAH(1)
| FB_CSCR_BEM_MASK
| FB_CSCR_WS(0x2) ; // 2 wait state

FB_CSMR0 = FB_CSMR_BAM(0x0) //Set base address mask for 64K address space
| FB_CSMR_V_MASK; //enable cs

FB_CSPMCR = FB_CSPMCR_GROUP5(2)| FB_CSPMCR_GROUP4(2);

}

 

And the hardware connections is :

 

K60                                                   Slave

AD[0:15]            ------>                    AD[0:15]

ALE                    ------>                   ALE

CS0                    ------>                   CS

R/W                    ------->                  R/W

FB_BE15-8        ------->                  B1SEL

FB_BE7-0          ------->                  B0SEL

 

 

CS0 ,FB_BE15-8 ,FB_BE7-0   use the Inverter (74HC04M) connect to CS ,B1SEL,B0SEL.

 

But ,this setup can not be write or read???  what's the problem???

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