SPRUIV7B May 2022 – September 2023 AM620-Q1 , AM623 , AM625 , AM625-Q1 , AM625SIP
The OBSCLK0 output pin is controlled by MAIN_CTRL_MMR_CFG0_OBSCLK0_CTRL register in the CTRL_MMR0 module; for more information about control registers, refer to Control Module (CTRL_MMR). Figure 6-34 shows a block diagram of internal OBSCLK0 mux connections.
MAIN_CTRL_MMR_CFG0_OBSCLK0_CTRL(2)[4-0] CLK_SEL | OBSCLK0 Selection (1) |
---|---|
0x0 | MAIN_PLL0_HSDIV0_CLKOUT |
0x1 | MAIN_PLL1_HSDIV0_CLKOUT |
0x2 | MAIN_PLL2_HSDIV0_CLKOUT |
0x3 | MAIN_PLL8_HSDIV0_CLKOUT |
0x4 | MAIN_PLL12_HSDIV0_CLKOUT |
0x5 | CLK_12M_RC |
0x6 | HFOSC0_CLKOUT_32K |
0x7 | PLLCTRL0_PLL_CTRL_OBSCLK_CLK |
0x8 | HFOSC0_CLKOUT |
0x9 | CLK_32K_RC |
0xA | CPSW0_CPTS_GENF0 |
0xB | CPSW0_CPTS_GENF1 |
0xC | MCU_PLL0_HSDIV0_CLKOUT |
0xD | MAIN_PLL15_HSDIV0_CLKOUT |
0xE | MAIN_PLL16_HSDIV0_CLKOUT |
0xF | MAIN_PLL17_HSDIV0_CLKOUT |
0x10 | MAIN_SYSCLK0 |
0x11 | DEVICE_CLKOUT_32K |
0x12-0xFF0x16-0x1F | RESERVED(3) |
The value of the software-controlled 8-bit divider is determined by register MAIN_CTRL_MMR_CFG0_OBSCLK0_CTRL[15-8] CLK_DIV; for more information about control registers, refer to Control Module (CTRL_MMR).