EMIF: SDRAM_CONFIG = 0x65a11b32
  * SDRAM_TYPE = DDR3
  * Bits 26:24 (reg_ddr_term) set for RZQ/8  (101b)
  * Bits 19:18 (reg_sdram_drive) set for RZQ/6 (00b)
  * Bits 17:16 (cwl) set for 6 (01b)
  * NARROW_MODE=0 (32-bit wide)
  * Bits 13:10 (CL) set for 7
  * Bits 9:7 (ROWSIZE) set for 15 row bits
  * Bits 6:4 (IBANK) set for 8 banks
  * Bit 3 (EBANK) set for 1 chip select (CS0)
  * Bits 3:0 (PAGESIZE) set for 10 column bits
EMIF: PWR_MGMT_CTRL = 0x000000a0
DDR PHY: DDR_PHY_CTRL_1 = 0x00008009
  * PHY_INVERT_CLKOUT=0.
DDR PHY: EXT_PHY_CTRL_1 = 0x08020080
CTRL_DDR_ADDRCTRL_IOCTRL = 0x0000038c
  * Bits 9:5 control ddr_ck and ddr_ckn
    - Slew slowest
    - Drive Strength 9 mA
  * Bits 4:0 control all other address/control pins
    - Slew slow
    - Drive Strength 9 mA
CTRL_DDR_ADDRCTRL_WD0_IOCTRL = 0x00000000
CTRL_DDR_ADDRCTRL_WD1_IOCTRL = 0x00000000
  * [ddr_a0    ] Pullup/Pulldown disabled
  * [ddr_a1    ] Pullup/Pulldown disabled
  * [ddr_a2    ] Pullup/Pulldown disabled
  * [ddr_a3    ] Pullup/Pulldown disabled
  * [ddr_a4    ] Pullup/Pulldown disabled
  * [ddr_a5    ] Pullup/Pulldown disabled
  * [ddr_a6    ] Pullup/Pulldown disabled
  * [ddr_a7    ] Pullup/Pulldown disabled
  * [ddr_a8    ] Pullup/Pulldown disabled
  * [ddr_a9    ] Pullup/Pulldown disabled
  * [ddr_a10   ] Pullup/Pulldown disabled
  * [ddr_a11   ] Pullup/Pulldown disabled
  * [ddr_a12   ] Pullup/Pulldown disabled
  * [ddr_a13   ] Pullup/Pulldown disabled
  * [ddr_a14   ] Pullup/Pulldown disabled
  * [ddr_a15   ] Pullup/Pulldown disabled
  * [ddr_ba2   ] Pullup/Pulldown disabled
  * [ddr_ba1   ] Pullup/Pulldown disabled
  * [ddr_ba0   ] Pullup/Pulldown disabled
  * [ddr_wen   ] Pullup/Pulldown disabled
  * [ddr_rasn  ] Pullup/Pulldown disabled
  * [ddr_casn  ] Pullup/Pulldown disabled
  * [ddr_nck   ] Pullup/Pulldown disabled
  * [ddr_ck    ] Pullup/Pulldown disabled
  * [ddr_cke   ] Pullup/Pulldown disabled
  * [ddr_csn1  ] Pullup/Pulldown disabled
  * [ddr_csn0  ] Pullup/Pulldown disabled
  * [ddr_resetn] Pullup/Pulldown disabled
  * [ddr_odt1  ] Pullup/Pulldown disabled
  * [ddr_odt0  ] Pullup/Pulldown disabled
CTRL_DDR_DATA0_IOCTRL = 0x0000018c
  * ddr_d0 Pullup/Pulldown disabled
  * ddr_d1 Pullup/Pulldown disabled
  * ddr_d2 Pullup/Pulldown disabled
  * ddr_d3 Pullup/Pulldown disabled
  * ddr_d4 Pullup/Pulldown disabled
  * ddr_d5 Pullup/Pulldown disabled
  * ddr_d6 Pullup/Pulldown disabled
  * ddr_d7 Pullup/Pulldown disabled
  * ddr_dqm0 Pullup/Pulldown disabled
  * ddr_dqs0 and ddr_dqsn0 Pullup/Pulldown disabled
  * Bits 9:5 control ddr_dqs0, ddr_dqsn0
    - Slew slow
    - Drive Strength 9 mA
  * Bits 4:0 control ddr_d[7:0], dqm0
    - Slew slow
    - Drive Strength 9 mA
CTRL_DDR_DATA1_IOCTRL = 0x0000018c
  * ddr_d8 Pullup/Pulldown disabled
  * ddr_d9 Pullup/Pulldown disabled
  * ddr_d10 Pullup/Pulldown disabled
  * ddr_d11 Pullup/Pulldown disabled
  * ddr_d12 Pullup/Pulldown disabled
  * ddr_d13 Pullup/Pulldown disabled
  * ddr_d14 Pullup/Pulldown disabled
  * ddr_d15 Pullup/Pulldown disabled
  * ddr_dqm1 Pullup/Pulldown disabled
  * ddr_dqs1 and ddr_dqsn1 Pullup/Pulldown disabled
  * Bits 9:5 control ddr_dqs1, ddr_dqsn1
    - Slew slow
    - Drive Strength 9 mA
  * Bits 4:0 control ddr_d[15:8], ddr_dqm1
    - Slew slow
    - Drive Strength 9 mA
CTRL_DDR_DATA2_IOCTRL = 0x0000018c
  * ddr_d16 Pullup/Pulldown disabled
  * ddr_d17 Pullup/Pulldown disabled
  * ddr_d18 Pullup/Pulldown disabled
  * ddr_d19 Pullup/Pulldown disabled
  * ddr_d20 Pullup/Pulldown disabled
  * ddr_d21 Pullup/Pulldown disabled
  * ddr_d22 Pullup/Pulldown disabled
  * ddr_d23 Pullup/Pulldown disabled
  * ddr_dqm2 Pullup/Pulldown disabled
  * ddr_dqs2 and ddr_dqsn2 Pullup/Pulldown disabled
  * Bits 9:5 control ddr_dqs2, ddr_dqsn2
    - Slew slow
    - Drive Strength 9 mA
  * Bits 4:0 control ddr_d[23:16], ddr_dqm2
    - Slew slow
    - Drive Strength 9 mA
CTRL_DDR_DATA3_IOCTRL = 0x0000018c
  * ddr_d24 Pullup/Pulldown disabled
  * ddr_d25 Pullup/Pulldown disabled
  * ddr_d26 Pullup/Pulldown disabled
  * ddr_d27 Pullup/Pulldown disabled
  * ddr_d28 Pullup/Pulldown disabled
  * ddr_d29 Pullup/Pulldown disabled
  * ddr_d30 Pullup/Pulldown disabled
  * ddr_d31 Pullup/Pulldown disabled
  * ddr_dqm3 Pullup/Pulldown disabled
  * ddr_dqs3 and ddr_dqsn3 Pullup/Pulldown disabled
  * Bits 9:5 control ddr_dqs3, ddr_dqsn3
    - Slew slow
    - Drive Strength 9 mA
  * Bits 4:0 control ddr_d[31:24], ddr_dqm3
    - Slew slow
    - Drive Strength 9 mA
CONTROL: CTRL_DDR_IO = 0x00000000
  * Bit 31: DDR_RESETn controlled by EMIF.
CONTROL: CTRL_VTP = 0x00010167
  * VTP not disabled (expected in normal operation, but not DS0).
CONTROL: CTRL_VREF = 0x00000000
  * VREF supplied externally (typical).
CONTROL: CTRL_DDR_CKE = 0x0000000f
  * CKE0 controlled by EMIF (normal/ungated operation).
  * CKE1 controlled by EMIF (normal/ungated operation).
