Refer to the PDF data sheet for device specific package drawings
CK signals are routed as point-to-point differential, and ADDR_CTRL signals are routed as point-to-point single ended. The supported topology for CK and ADDR_CTRL are shown in Figure 8-32 through Figure 8-35. Note that ADDR_CTRL are routed very similar to DQ and CK is routed very similar to DQS.
Trace routing specifications for the CK and the ADD_CTRL are specified in Table 8-21.
|1||CK and ADDR_CTRL nominal trace length(1)||CACLM||mils|
|4||Via count per each trace ADDR_CTRL, CK||2|
|5||Via count difference across ADDR_CTRL, CK||0|
|7||Center-to-center ADDR_CTRL to other LPDDR2 trace spacing(2)(3)||4||w|
|8||Center-to-center ADDR_CTRL to other ADDR_CTRL trace spacing(2)||3||w|
|9||CK center-to-center spacing(4)|
|10||CK center-to-center spacing to other net(2)||4||w|