K60 FlexBus 16-bit data, 10-bit address to CPLD

abby — Wed, 23 Jul 2014 06:23:33 GMT

Hi,

I use K60 FlexBus to read/write CPLD in 16-bit data and 10-bit address mode.

HW setting:

//FlexBus

//Address

PORTB_PCR20 = PORT_PCR_MUX(5); // fb_ad[31] - FB_XA15

PORTB_PCR21 = PORT_PCR_MUX(5); // fb_ad[30] - FB_XA14

PORTB_PCR22 = PORT_PCR_MUX(5); // fb_ad[29] - FB_XA13

PORTB_PCR23 = PORT_PCR_MUX(5); // fb_ad[28] - FB_XA12

PORTC_PCR12 = PORT_PCR_MUX(5); // fb_ad[27] - FB_XA11

PORTC_PCR13 = PORT_PCR_MUX(5); // fb_ad[26] - FB_XA10

PORTC_PCR14 = PORT_PCR_MUX(5); // fb_ad[25] - FB_XA9

PORTC_PCR15 = PORT_PCR_MUX(5); // fb_ad[24] - FB_XA8

PORTB_PCR6 = PORT_PCR_MUX(5); // fb_ad[23] - FB_XA7

PORTB_PCR7 = PORT_PCR_MUX(5); // fb_ad[22] - FB_XA6

PORTB_PCR8 = PORT_PCR_MUX(5); // fb_ad[21] - FB_XA5

PORTB_PCR9 = PORT_PCR_MUX(5); // fb_ad[20] - FB_XA4

PORTB_PCR10 = PORT_PCR_MUX(5); // fb_ad[19] - FB_XA3

PORTB_PCR11 = PORT_PCR_MUX(5); // fb_ad[18] - FB_XA2

PORTB_PCR16 = PORT_PCR_MUX(5); // fb_ad[17] - FB_XA1

PORTB_PCR17 = PORT_PCR_MUX(5); // fb_ad[16] - FB_XA0

//Data

PORTB_PCR18 = PORT_PCR_MUX(5); // fb_ad[15] - FB_XD15

PORTC_PCR0 = PORT_PCR_MUX(5); // fb_ad[14] - FB_XD14

PORTC_PCR1 = PORT_PCR_MUX(5); // fb_ad[13] - FB_XD13

PORTC_PCR2 = PORT_PCR_MUX(5); // fb_ad[12] - FB_XD12

PORTC_PCR4 = PORT_PCR_MUX(5); // fb_ad[11] - FB_XD11

PORTC_PCR5 = PORT_PCR_MUX(5); // fb_ad[10] - FB_XD10

PORTC_PCR6 = PORT_PCR_MUX(5); // fb_ad[9] - FB_XD9

PORTC_PCR7 = PORT_PCR_MUX(5); // fb_ad[8] - FB_XD8

PORTC_PCR8 = PORT_PCR_MUX(5); // fb_ad[7] - FB_XD7

PORTC_PCR9 = PORT_PCR_MUX(5); // fb_ad[6] - FB_XD6

PORTC_PCR10 = PORT_PCR_MUX(5); // fb_ad[5] - FB_XD5

PORTD_PCR2 = PORT_PCR_MUX(5); // fb_ad[4] - FB_XD4

PORTD_PCR3 = PORT_PCR_MUX(5); // fb_ad[3] - FB_XD3

PORTD_PCR4 = PORT_PCR_MUX(5); // fb_ad[2] - FB_XD2

PORTD_PCR5 = PORT_PCR_MUX(5); // fb_ad[1] - FB_XD1

PORTD_PCR6 = PORT_PCR_MUX(5); // fb_ad[0] - FB_XD0

//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 to CPLD

PORTC_PCR18 = PORT_PCR_MUX(5); // fb_cs2/b

PORTD_PCR0 = PORT_PCR_MUX(5); // fb_ale

PORTC_PCR3 = PORT_PCR_MUX(5); // CLKOUT

FlexBus initial code:

#define CPLD_ADDR (*(vuint16*)(0xA0000000))

FB_CSAR0 = (uint32)&CPLD_ADDR;

FB_CSMR0 = FB_CSMR_BAM(7) //Set base address mask for address space

| FB_CSMR_V_MASK ; //Enable CS signa

FB_CSCR0 = FB_CSCR_PS(2) // 16-bit port

| FB_CSCR_AA_MASK // auto-acknowledge

| FB_CSCR_ASET(0x1) // assert chip select on second clock edge after address is asserted

| FB_CSCR_WS(0x1) // 1 wait state - may need a wait state depending on the bus speed

| FB_CSCR_BLS_MASK;

Write to CPLD:

uint16 CPLDdata = 0x1234;

*(vuint16*)(&CPLD_ADDR) = CPLDdata;

Q1:

If I want to write the next 16-bit data to the next address, the CPLD_ADDR will plus 2 or 1?
For example: 1st address is 0xA0000000, 2nd address will be 0xA0020000 or 0xA0010000?

If plus 2, this means one addree = 8-bit data?

Q2:

In HW connection,(16-bit data mode)

Which connection is right?

1. FB_XA[0-9] <-> CPLD's address[0-9]

2. FB_XA[1-10]<-> CPLD's address[0-9]

Thank you.

Abby

Re: K60 FlexBus 16-bit data, 10-bit address to CPLD

Hui_Ma — Wed, 30 Jul 2014 03:43:59 GMT

Hi Abby,

I find you are using FB_AD[31:16] connects with CPLD address lines, which should use FB_A16 & FB_AD[15:1] connects with CPLD address lines(DATA port size is 16-bit).

K60 Flexbus provides extended address line, such as FB_A16, FB_A17 and etc.

So, customer can use FB_AD[31:16] connects with CPLD data lines.

1> CPLD_ADDR will plus 2 (16-bit data port size).

1st address is 0xA0000000, 2nd address will be 0xA0000002.

2> Please refer my above comments.

Wish it helps.
best regards
Ma Hui

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Re: K60 FlexBus 16-bit data, 10-bit address to CPLD

abby — Wed, 30 Jul 2014 12:52:57 GMT

Hi Hui_Ma,

Thanks a lot.

Abby

Kinetis MicrocontrollersのトピックRe: K60 FlexBus 16-bit data, 10-bit address to CPLD

K60 FlexBus 16-bit data, 10-bit address to CPLD

Re: K60 FlexBus 16-bit data, 10-bit address to CPLD

Re: K60 FlexBus 16-bit data, 10-bit address to CPLD