主题中讨论的其他器件:测试2
尊敬的 TI:
我在上拉 TEST2后执行以下操作。
chose operation: [0]: HBR2 Compliance Eye Pattern [1]: Symbol Error Rate Measurement Pattern [2]: 80-bit Custom Pattern [3]: Other: Setting Reg [4]: Other: Read DPCD : 0 set reg: [0A] = 00000010 now reg: [0A] = 00000010 we will use refclk 1 set reg: [94] = 10000000 now reg: [94] = 10000000 set reg: [93] = 00110100 now reg: [93] = 00110100 set reg: [FF] = 00000111 now reg: [FF] = 00000111 set reg: [16] = 00000001 now reg: [16] = 00000001 set reg: [FF] = 00000000 now reg: [FF] = 00000000 set reg: [5A] = 00000100 now reg: [5A] = 00000101 set reg: [0D] = 00000001 now reg: [0D] = 00000001 set HBR2_COMPEYEPAT_LENGTH reg (260): 260 set reg: [98] = 00000001 now reg: [98] = 00000001 set reg: [97] = 00000100 now reg: [97] = 00000100 now ENCH_FRAME_PATT = SR BF BF SR or BS BF BF BS [0]: SR BF BF SR or BS BF BF BS [1]: SR CP CP SR or BS CP CP BS choose ENCH_FRAME_PATT (0): 0 set reg: [5B] = 00000000 now reg: [5B] = 00000000 [0] = Pre-emphasis level 0. [1] = Pre-emphasis level 1. [2] = Pre-emphasis level 2. [3] = Pre-emphasis level 3. set Pre-Emphasis Level (recommend 1): 0 set reg: [93] = 00110100 now reg: [93] = 00110100 [0] = Voltage swing level 0. [1] = Voltage swing level 1. [2] = Voltage swing level 2. [3] = Voltage swing level 3. set VOD level (recommend 1): 0 set reg: [94] = 10000000 now reg: [94] = 10000000 [0] = Post-Cursor2 Level 0 (0 dB) (Default) [2] = Post-Cursor2 Level 1 (0.92 dB) [4] = Post-Cursor2 Level 2 (1.94 dB) [6] = Post-Cursor2 Level 3 (3.10 dB). set post cursor2 (recommend 0): 0 set reg: [95] = 00000000 now reg: [95] = 00000000 set reg: [96] = 00000110 now reg: [96] = 00000110
现在桥接寄存器是
00000000:3638 4953 4420 2020 0200 8200 0001 0000 68ISD .
00000010:3e00 6500 0000 0000 0000 0000 0000 0000 >.e............
00000020:0000 0000 0000 0000 0000 0000 0000 0000 .........
00000030:0000 0000 0000 0000 0000 0000 0000 0000 .........
00000040:0100 0000 8000 0000 0000 0000 0000 .........
00000050:0000 0000 2000 40e4 0500 1000 9000 ...... .@……
00000060:A060 a400 0000 0000 0000 0000 0000 .`……
00000070:0000 0000 0001 0301 9009 0000 0000 .........
00000080:0000 0000 0000 001f 7cf0 c107 1f7c ......... |。。|
00000090:f0c1 0734 8000 0604 0100 0000 0000 ... 4 ...
000000a0:01ff ff00 0000 0000 0000 0000 0000 .
000000b0:0478 acac 086c 9c9c 0c5c 5c5c 0c0c 0c0c 0c0c .x...L...\\\……
000000c0:3f3f 0f00 0000 0000 0000 0000 0000?………
000000d0:0000 0000 0000 0000 0000 0000 0000 .........
000000e0:0000 0000 0000 0000 0000 0000 0000 .........
000000f0:0002 0000 0102 0000 0000 0000 0000 0000.0000
I 设置数据速率 HBR、但 波形为 hbr2 (5.4Gbps)
如果 I SET 数据速率为1.62Gbps、则 波形将为4.32Gbps
我发现波形在我进行 DP 锁定(0x0D)时出现、甚至不确定设置为 HBR2 (0x96)的模式是否有效、因为我没有看到显著的变化。
我仔细阅读了规范、找不到任何问题