SPRAD66B February 2023 – December 2024 AM62A3 , AM62A3-Q1 , AM62A7 , AM62A7-Q1 , AM62D-Q1 , AM62P , AM62P-Q1
Set up the system-level schematic in the simulator by connecting the SOC IBIS model, board model, power supplies, DRAM package model, and DRAM IBIS model. A typical system-level DDR schematic is shown in Figure 3-2.
******************************************
* On-die Decoupling circuit for AM62Ax,
AM62Px, AM62Dx (DIE_VDDS_DDR to VSS)
******************************************
* Notes:
* Includes on-die decoupling for all DDR signals
*
* This subcircuit must be added across the AM62Ax,
AM62Px, AM62Dx IBIS model's
* DIE_VDDS_DDR and VSS pins
*
******************************************
* x_decouple DIE_VDDS_DDR vss_die AM62Ax,
AM62Px, AM62Dx_ondie_decoupling_alldq
******************************************
.SUBCKTAM62Ax,
AM62Px, AM62Dx_ondie_decoupling_alldq DIE_VDDS_DDR vss_die
Cvddq_c DIE_VDDS_DDR DIE_VDDS_DDR_c 1.324741e-9
Rvddq_c vss_die DIE_VDDS_DDR_c 25.0036612e-3
.ENDS
******************************************
* On-die Decoupling circuit for AM62Ax,
AM62Px, AM62Dx (DIE_VDDS_DDR to VSS)
******************************************
* Notes:
* Includes on-die decoupling for all DDR signals
*
* This subcircuit must be added across the AM62Ax,
AM62Px, AM62Dx IBIS model's
* DIE_VDDS_DDR and VSS pins
*
******************************************
* x_decouple DIE_VDDS_DDR vss_die AM62Ax,
AM62Px, AM62Dx_ondie_decoupling_alldq
******************************************
.SUBCKTAM62Ax,
AM62Px, AM62Dx_ondie_decoupling_alldq DIE_VDDS_DDR vss_die
Cvddq_c DIE_VDDS_DDR DIE_VDDS_DDR_c 4.335517e-9
Rvddq_c vss_die DIE_VDDS_DDR_c 25.0036612e-3
.ENDS