SPRS814D March 2012 – October 2019 TMS320C6655 , TMS320C6657
PRODUCTION DATA.
请参考 PDF 数据表获取器件具体的封装图。
The ROM Bootloader (RBL) is guided by the boot parameter table to carry out the boot process. The boot parameter table is the most common format the RBL employs to determine the boot flow. These boot parameter tables have certain parameters common across all the boot modes, while the rest of the parameters are unique to the boot modes. Table 6-78 lists the common entries in the boot parameter table.
Byte Offset | Name | Description |
---|---|---|
0 | Length | The length of this table, including this length field, in bytes. |
2 | Checksum | Identifies the device port number to boot from, if applicable. The value 0xFFFF indicates that all ports are configured (Ethernet, SRIO).
The 16 bits ones complement of the ones complement of the entire table. A value of "0" will disable checksum verification of the table by the boot ROM. |
4 | Boot Mode | See Table 6-79 |
6 | Port Num | Identifies the device port number to boot from, if applicable. The value 0xFFFF indicates that all ports are configured (Ethernet, SRIO). |
8 | PLL config, MSW | PLL configuration, MSW (see Figure 6-39) |
10 | PLL config, LSW | PLL configuration, LSW |
Value | Boot Mode |
---|---|
10 | Ethernet (boot table) |
20 | Rapid I/O |
30 | PCIe |
40 | I2C Master |
41 | I2C Slave |
42 | I2C Master Write |
50 | SPI |
60 | Hyperlink |
70 | EMIF16 |
80 | NAND |
81 | NAND I2C |
100 | SLEEP, no PLL configuration |
110 | UART |
31 | 30 | 29 | 16 | 15 | 8 | 7 | 0 |
PLL Config Ctl | PLL Multiplier | PLL Predivider | PLL Post-Divider |
Field | Value | Description |
---|---|---|
PLL Config Ctl | 0b00 | PLL is not configured |
0b01 | PLL is configured only if it is currently disabled or in bypass | |
0b10 | PLL is configured only if it is currently disabled or in bypass | |
0b11 | PLL is disabled and put into bypass | |
Predivider | 0-255 | Input clock division. The value 0 is treated as predivide by 1 |
Multiplier | 0-16383 | Multiplier. The value 0 is treated as multiply by 1 |
Post-divider | 0-255 | PLL output division. The value 0 is treated as post divide by 1 |