During boot, the BootROM sets configuration registers that apply to each boot mode. For JTAG boot mode, the BootROM sets the registers to the initial values shown in the following table.
Register Name | Base Address | Register Value | Description |
---|---|---|---|
DST_CTRL2 | 0xF11D_0824 |
0x081B_FFF8
|
PMC DMA controller 1 destination setup |
RST_SBI | 0xF126_0324 |
0x0000_0000
|
SBI reset not asserted |
SBI_MODE | 0xF122_0000 |
0x0000_0002
|
Device configuration mode, JTAG pass through SBI (PDI loading) |
SBI_CTRL | 0xF122_0004 |
0x0000_0025
|
JTAG mode data transfer, SBI enabled |
PMCPLL_CTRL | 0xF126_0040 |
0x0002_4800
|
PMC PLL (PPLL) setup uses reset defaults (REF_CLK multiplied by 72 (FBDIV) and divided by 4 (CLKOUTDIV)) |