NXP Semiconductors i.MX8 QM - Page 29

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_DQS1_P 8641.27 64.8686 DDR_DQS4_N 9959.44 73.5807
DDR_DQS2_N 8761.63 65.8288 DDR_DQS4_P 9958.73 74.6451
Table 19. i.MX8 QXP DDR 17 x 17 mm package trace lengths/delays
Ball Name
Length
(microns)
XIM delay
(ps)
Ball Name
Length
(microns)
XIM delay (ps)
DDR_CK0_N 9449.88 70.8242 DDR_DCF28 7684.51 59.1856
DDR_CK0_P 9158.14 67.9972 DDR_DCF29 6663.57 52.0228
DDR_CK1_N 10120.9 75.0713 DDR_DCF30 5197.86 40.5424
DDR_CK1_P 9896.86 74.2075 DDR_DCF31 7121.98 54.6766
DDR_DCF00 8754.86 65.8329 DDR_DCF32 6487.17 51.1687
DDR_DCF01 11309.9 83.5447 DDR_DCF33 6150.32 48.6505
DDR_DCF03 8986.16 67.4538 DDR_DM0 6796.77 52.196
DDR_DCF04 5132.16 40.9709 DDR_DM1 3847.74 30.3047
DDR_DCF05 9058.4 67.7856 DDR_DQ00 8859.27 68.0011
DDR_DCF07 10139.1 75.6965 DDR_DQ01 7524 56.764
DDR_DCF08 8607.45 65.8647 DDR_DQ02 9491.6 71.3627
DDR_DCF09 8024.11 61.4408 DDR_DQ03 7057.53 53.7638
DDR_DCF10 10883.1 80.6124 DDR_DQ04 6528.95 50.6725
DDR_DCF11 7270.83 56.1378 DDR_DQ05 5859.65 46.0148
DDR_DCF12 11795.9 87.1921 DDR_DQ06 6481.95 50.2348
DDR_DCF14 8636.8 65.2871 DDR_DQ07 5616.71 44.0571
DDR_DCF15 10912 81.5138 DDR_DQ08 4149.83 34.3367
DDR_DCF16 5282.96 40.2926 DDR_DQ09 5482.01 44.2618
DDR_DCF17 9305.29 67.6591 DDR_DQ10 4897.01 37.5122
DDR_DCF18 10262.6 77.7681 DDR_DQ11 5932.84 47.1587
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 29 / 89