SPRUIL1D May 2019 – December 2024 DRA829J , DRA829J-Q1 , DRA829V , DRA829V-Q1 , TDA4VM , TDA4VM-Q1
In this mode, the ROM Code configures the GPMC interface based on the configuration parameters specified in the boot parameter table for the GPMC NOR boot mode, see Section 4.4.6, GPMC NOR Boot Parameter Table. The boot parameter structure definition for the GPMC NOR boot mode and the parts of this table that can be configured by the BOOTMODE pins are detailed in Section 4.3.14, GPMC NOR Boot Device Configuration.
The default timings cannot be used since they are based on a 19.2 MHz module clock. The GPMC module is clocked by Main PLL0 (MAIN_SYSCLK0) divided by 2, which is 250 MHz. This is the FCLK input to the module, yielding a 4-ns period. The following configurations are setup by boot:
| Field | Default | ROM Code | ||
|---|---|---|---|---|
| Value | Time (ns) | Value | Time (ns) | |
| CSOnTime | 1 | 4 | 1 | 4 |
| CSRdOffTime | 16 | 64 | 28 | 112 |
| ADVOnTime | 4 | 16 | 8 | 32 |
| ADVRdOffTime | 5 | 20 | 11 | 44 |
| OEOnTime | 6 | 24 | 13 | 52 |
| OEOffTime | 16 | 64 | 28 | 112 |
| RdAccessTime | 15 | 60 | 27 | 108 |
| RdCycleTime | 17 | 68 | 30 | 120 |
| AdvAadMuxOnTime | 1 | 4 | 1 | 4 |
| AdvAadMuxOffTime | 2 | 8 | 4 | 16 |
| OeAadMuxOnTime | 1 | 4 | 1 | 4 |
| OeAadMuxOffTime | 3 | 12 | 6 | 24 |