TI中文支持网
TI专业的中文技术问题搜集分享网站

ADC12QJ800-Q1: 寄存器配置问题,寄存器配置顺序和寄存器的值

Part Number:ADC12QJ800-Q1

需求:

    使用差分时钟:输入144MHz,

    使用CPLL 生成采样率720Mpsp采样信号

    JESD使用mode0,单lane速率5.76Gbps,使用8个lane,数据加扰,sysref信号2.25MHz

配置过程:

首先,根据手册9.3章节使用如下寄存器配置顺序和值,读取CPLL,SPLL未锁定,JESD  未发出同步码 
  

   图中第一列为寄存器地址,第三列为写入的寄存器值,在0x00 寄存器 写入0xB0后,读取0x270-寄存器为 0x01,然后继续写入,写入完成后没有反应

然后使用如下的寄存器配置表:

    {0x00U, 1U, 0xB0U, 0x00U}, {0x02U, 1U, 0x00U, 0x00U}, {0x10U, 1U, 0x00U, 0x00U}, {0x29U, 1U, 0xE0U, 0x00U}, {0x2AU, 1U, 0x00U, 0x00U}, {0x2BU, 1U, 0x03U, 0x00U}, //0X30 0XA000 {0x30U, 1U, 0xA0U, 0x00U}, {0x31U, 1U, 0xA0U, 0x00U}, {0x37U, 1U, 0x4BU, 0x00U}, {0x3BU, 1U, 0x00U, 0x00U}, {0x3CU, 1U, 0x01U, 0x00U}, {0x3DU, 1U, 0x04U, 0x00U}, {0x3EU, 1U, 0x05U, 0x00U}, {0x3FU, 1U, 0x4AU, 0x00U}, {0x48U, 1U, 0x03U, 0x00U}, {0x57U, 1U, 0x00U, 0x00U}, {0x58U, 1U, 0x00U, 0x00U}, {0x59U, 1U, 0x00U, 0x00U}, {0x5CU, 1U, 0x00U, 0x00U}, {0x5DU, 1U, 0x41U, 0x00U}, //0X5E //READ {0x61U, 1U, 0x01U, 0x00U}, {0x62U, 1U, 0x01U, 0x00U}, {0x65U, 1U, 0x01U, 0x00U}, {0x68U, 1U, 0x61U, 0x00U}, {0x6BU, 1U, 0x00U, 0x00U}, {0x6CU, 1U, 0x01U, 0x00U}, {0x7AU, 1U, 0x00U, 0x00U}, {0x7CU, 1U, 0x00U, 0x00U}, {0x7EU, 1U, 0x00U, 0x00U}, {0x7FU, 1U, 0x00U, 0x00U}, {0x80U, 1U, 0x00U, 0x00U}, {0x81U, 1U, 0x00U, 0x00U}, {0x9AU, 1U, 0x08U, 0x00U}, {0x9BU, 1U, 0x07U, 0x00U}, {0x9DU, 1U, 0x00U, 0x00U}, {0x160U, 1U, 0x00U, 0x00U}, {0x200U, 1U, 0x01U, 0x00U}, {0x201U, 1U, 0x00U, 0x00U}, {0x202U, 1U, 0x1FU, 0x00U}, {0x203U, 1U, 0x01U, 0x00U}, {0x204U, 1U, 0x03U, 0x00U}, {0x205U, 1U, 0x00U, 0x00U}, {0x206U, 1U, 0x00U, 0x00U}, {0x207U, 1U, 0x00U, 0x00U}, // {0x208U, 1U, 0x00U, 0x00U}, {0x209U, 1U, 0x03U, 0x00U}, {0x20FU, 1U, 0x00U, 0x00U}, {0x210U, 1U, 0x03U, 0x00U}, {0x211U, 1U, 0xF2U, 0x00U}, {0x213U, 1U, 0x07U, 0x00U}, //0X270 //READ {0x29AU, 1U, 0x0FU, 0x00U}, {0x29BU, 1U, 0x04U, 0x00U}, {0x29CU, 1U, 0x1BU, 0x00U}, {0x2C1U, 1U, 0x3FU, 0x00U}, {0x2C2U, 1U, 0x3FU, 0x00U}, {0x2C4U, 1U, 0xFFU, 0x00U}, {0x330U, 1U, 0x00U, 0x00U}, {0x332U, 1U, 0x00U, 0x00U}, {0x334U, 1U, 0x00U, 0x00U}, {0x336U, 1U, 0x00U, 0x00U}, {0x338U, 1U, 0x00U, 0x00U}, {0x33AU, 1U, 0x00U, 0x00U}, {0x33EU, 1U, 0x00U, 0x00U}, {0x360U, 1U, 0x00U, 0x00U}, {0x361U, 1U, 0x00U, 0x00U}, {0x362U, 1U, 0x00U, 0x00U}, {0x363U, 1U, 0x00U, 0x00U}, {0x364U, 1U, 0x00U, 0x00U}, {0x365U, 1U, 0x00U, 0x00U}, {0x366U, 1U, 0x00U, 0x00U}, {0x367U, 1U, 0x00U, 0x00U},  

第一列为地址,第三列为寄存器写入值,CPLL SPLL未锁定,没有反应,

请问有没有准确的按照顺序配置的寄存器配置表

?? ?:

144MHz 是器件的时钟输入

,

?? ?:

JESD 的K 值为 32-1

,

Amy Luo:

您好,

此问题与下面链接问题重复,请查看下面链接回复:

https://e2echina.ti.com/support/data-converters/f/data-converters-forum/496795/adc12qj800-q1

因重复这个帖子我直接关了。

赞(0)
未经允许不得转载:TI中文支持网 » ADC12QJ800-Q1: 寄存器配置问题,寄存器配置顺序和寄存器的值
分享到: 更多 (0)