NXP Semiconductors i.MX8 QM - Page 28

Table 18. i.MX8 QXP DDR 21 x 21 mm package trace lengths/delays (continued)
Ball Name
Length
(microns)
XIM delay
(ps)
Ball Name
Length
(microns)
XIM delay (ps)
DDR_DCF17 6835.25 52.3421 DDR_DQ16 9902.43 73.7108
DDR_DCF18 8802.86 66.1865 DDR_DQ17 8170.79 63.8656
DDR_DCF19 7923.69 60.3259 DDR_DQ18 7585.53 58.9951
DDR_DCF20 6384.93 49.2981 DDR_DQ19 8721.6 66.4481
DDR_DCF21 4281.75 35.3493 DDR_DQ20 7733.88 59.4337
DDR_DCF22 7341.69 55.6365 DDR_DQ21 8134.63 61.4536
DDR_DCF23 5443.42 43.8914 DDR_DQ22 6867.58 53.8569
DDR_DCF24 5213.64 41.3148 DDR_DQ23 7483.71 57.6748
DDR_DCF25 6389.06 50.0117 DDR_DQ24 12396.4 91.455
DDR_DCF26 5323.56 43.9052 DDR_DQ25 12086.1 90.1234
DDR_DCF27 6966.31 53.0627 DDR_DQ26 11689.6 86.6571
DDR_DCF28 6484.39 50.4087 DDR_DQ27 12943.3 94.8301
DDR_DCF29 7756.88 58.7207 DDR_DQ28 8532.32 64.2572
DDR_DCF30 4057.33 33.5742 DDR_DQ29 9663.79 71.9756
DDR_DCF31 6973.54 54.6613 DDR_DQ30 10704.9 78.4097
DDR_DCF32 7058.2 54.0296 DDR_DQ31 9234.2 70.1656
DDR_DCF33 3586.36 30.766 DDR_DQ32 11196.3 82.8866
DDR_DM0 6506.84 50.9618 DDR_DQ33 10866.6 80.1328
DDR_DM1 6837.43 53.0854 DDR_DQ34 9882.26 74.3689
DDR_DM2 8702.77 66.0263 DDR_DQ35 11602.4 84.4436
DDR_DM3 11941.5 87.9312 DDR_DQ36 7619.44 58.4747
DDR_DM4 8130.6 61.666 DDR_DQ37 8183.16 61.6764
DDR_DQS0_N 7881.46 60.2778 DDR_DQ38 8298.95 63.0339
DDR_DQS0_P 7874.83 60.2327 DDR_DQ39 8217.36 63.5505
DDR_DQS1_N 8618.61 65.7222 DDR_DQS2_P 8732.72 66.6938
Table continues on the next page...
NXP Semiconductors
i.MX8 layout/routing recommendations
i.MX8 QM / i.MX8 QXP Hardware Developer’s Guide, Rev. 2.4p, 06/2021
User's Guide 28 / 89