CDCI6214: crc总是错误，导致无法锁定

Hello,

The data sheet is correct; therefore, I am a little confused what is your exact question.

Note that the address of the registers are different that the addresses on SRAM/EEPROM, so if you are reading back from EEPROM the address of 0x3F, you wont get the same value as reading back from register 0x3F (again, because they have different addresses to store the same information.

Also, when you posted your question, most of the text was in Chinese so I could only understand the step by step breakdown of the programming you followed and your question in red.

Best,

Andrea

hello vallenilla,

I write the follow data to the eeprom page0, 

u32 cdci_regs[]={
0x003F4210,
0x003E4218,
0x003D1500,
0x003C0018,
0x003B1061,
0x003A0000,
0x00398851,
0x00380005,
0x00370000,
0x00360000,
0x00358000,
0x00340000,
0x00338861,
0x00320025,
0x00310006,
0x00300000,
0x002F8000,
0x002E0000,
0x002D0851,
0x002C0025,
0x002B0006,
0x002A0000,
0x00298000,
0x00280000,
0x00270851,
0x00260005,
0x00250006,
0x00240000,
0x00238000,
0x00220050,
0x00210007,
0x00200000,
0x001F1E72,
0x001E5140,
0x001D000C,
0x001C0000,
0x001B0000,
0x001A8E24,
0x00192406,
0x00180000,
0x00170000,
0x00160000,
0x00150000,
0x00140001,
0x00130000,
0x0012FFFF,
0x001126C4,
0x0010921F,
0x000FA037,
0x000E0000,
0x000D0000,
0x000C0000,
0x000B0000,
0x000A0000,
0x00090000,
0x00080001,
0x00070C0D,
0x000619CA,
0x00050008,
0x000400F7,
0x00030001,
0x00020055,
0x00016854,
0x00001000,

};

then read back the eeprom page by 

 cdci6214_write_reg(0x03,0x2000);

and read register by

for(i=0;i<0x40;i++)
{
cdci6214_read_reg(i,regs+i);
}

get the result

regs[64] =[0x1000, 0x6854, 0x0055, 0x0000, 0x00f7, 0x0008, 0x19ca, 0x0024, 0x0001, 0x9928, 0x0000, 0x0000, 0xee00, 0x003f, 0x9928, 0x5037, 0x921f, 0x26c4, 0xa001, 0x0000, 0x0001, 0x0000, 0x0000, 0x0580, 0x0601, 0x0006, 0x0e24, 0x0000, 0x0000, 0x000c, 0x5140, 0x1e72, 0x0000, 0x0007, 0x0050, 0x8000, 0x0000, 0x0006, 0x0405, 0x0851, 0x0008, 0x8000, 0x0000, 0x0006, 0x0005, 0x0851, 0x0000, 0x8000, 0x0000, 0x0006, 0x0425, 0x8861, 0x0008, 0x8000, 0x0000, 0x0000, 0x0005, 0x8851, 0x0000, 0x1061, 0x0018, 0x1500, 0x4218, 0xc210]

we can see most registers are the same as I writed into the eeprom,

but the reg7 is 0x0024, this means the vco have not locked, and config_done is not high, what event would stoped its' configuration? and why nvmcrcerr is high? how to fix this problem?

Hello Xiao,

When you say "reg07", do you mean the address pointing to the register map or the EEPROM? Also, note that it's normal for certain registers to show up different that the ones you wrote to IF that register is a read-only register. No matter the value you write to it, it won't change and always remain the default.

Also, please note that TI highly recommends to switch to CDCE6214 since it's a better performing part. If possible, please do make the transition.

Best,

Andrea

Here reg07 is register map, not eeprom. I know that the ready only registers can't be writen, but why config_done is not high? 

 if cdce6214 is better ,we will make this transition, thank you very much!