ZHCSYD5 June 2025 DAC39RF20
ADVANCE INFORMATION
JCAP 寄存器可用于捕获传输层的输出,以进行一般调试。将 JESD204C 发送器配置为生成长度为一个帧的固定、重复样本序列(例如短传输层测试模式)。捕获不会同步到帧边界。捕获仅与应用层时钟同步(这不一定与帧边界相对应,具体取决于 JMODE 和 LT)。
要执行传输层捕获,请配置 JCAP_MODE=2。然后,在链路启动时设定 JCAP_ARM=1 进行捕获。另请参阅 JCAP_STATUS。
捕获完成后,可以从 JCAP 寄存器中读取数据。必须对 JCAP_PAGE 寄存器进行设定,这样才能访问所有数据页。数据的组织取决于 LT(内插因子),并在下表中定义。
| JCAP_PAGE | 从 {JCAP[2n+1], JCAP[2n]} 返回的传输层样本 | ||||
|---|---|---|---|---|---|
|
LT = 1 (n=0..4) |
LT = 4 或 6 (n=0..7) |
LT = 8 或 12 (n=0..7) |
LT = 16 或 24 (n=0..7) |
LT = 32 或更高版本 (n=0..7) | |
| 0 | C0[16n] | C0[8n] | C0[4n] | C0[2n] | C0[n] |
| 1 | C0[16n+1] | C0[8n+2] | C0[4n+1] | - | - |
| 2 | C0[16n+2] | C0[8n+4] | C0[4n+2] | C0[2n+1] | - |
| 3 | C0[16n+3] | C0[8n+6] | C0[4n+3] | - | - |
| 4 | C0[16n+4] | C1[8n] | C1[4n] | C1[2n] | C1[n] |
| 5 | C0[16n+5] | C1[8n+2] | C1[4n+1] | - | - |
| 6 | C0[16n+6] | C1[8n+4] | C1[4n+2] | C1[2n+1] | - |
| 7 | C0[16n+7] | C1[8n+6] | C1[4n+3] | - | - |
| 8 | C0[16n+8] | C2[8n] | C2[4n] | C2[2n] | C2[n] |
| 9 | C0[16n+9] | C2[8n+2] | C2[4n+1] | - | - |
| 10 | C0[16n+10] | C2[8n+4] | C2[4n+2] | C2[2n+1] | - |
| 11 | C0[16n+11] | C2[8n+6] | C2[4n+3] | - | - |
| 12 | C0[16n+12] | C3[8n] | C3[4n] | C3[2n] | C3[n] |
| 13 | C0[16n+13] | C3[8n+2] | C3[4n+1] | - | - |
| 14 | C0[16n+14] | C3[8n+4] | C3[4n+2] | C3[2n+1] | - |
| 15 | C0[16n+15] | C3[8n+6] | C3[4n+3] | - | - |
| 16 | C1[16n] | C0[8n+1] | C4[4n] | C4[2n] | C4[n] |
| 17 | C1[16n+1] | C0[8n+3] | C4[4n+1] | - | |
| 18 | C1[16n+2] | C0[8n+5] | C4[4n+2] | C4[2n+1] | |
| 19 | C1[16n+3] | C0[8n+7] | C4[4n+3] | - | |
| 20 | C1[16n+4] | C1[8n+1] | C5[4n] | C5[2n] | C5[n] |
| 21 | C1[16n+5] | C1[8n+3] | C5[4n+1] | - | - |
| 22 | C1[16n+6] | C1[8n+5] | C5[4n+2] | C5[2n+1] | - |
| 23 | C1[16n+7] | C1[8n+7] | C5[4n+3] | - | - |
| 24 | C1[16n+8] | C2[8n+1] | C6[4n] | C6[2n] | C6[n] |
| 25 | C1[16n+9] | C2[8n+3] | C6[4n+1] | - | - |
| 26 | C1[16n+10] | C2[8n+5] | C6[4n+2] | C6[2n+1] | - |
| 27 | C1[16n+11] | C2[8n+7] | C6[4n+3] | - | - |
| 28 | C1[16n+12] | C3[8n+1] | C7[4n] | C7[2n] | C7[n] |
| 29 | C1[16n+13] | C3[8n+3] | C7[4n+1] | - | - |
| 30 | C1[16n+14] | C3[8n+5] | C7[4n+2] | C7[2n+1] | - |
| 31 | C1[16n+15] | C3[8n+7] | C7[4n+3] | - | - |