SPRUI30H November 2015 – May 2024 DRA745 , DRA746 , DRA750 , DRA756
This section lists all formulas to calculate synchronous NOR timing parameters. This is the case when GPMC_CONFIG1_i[11:10] DEVICETYPE = 0x0 and when READTYPE or WRITETYPE are set to synchronous mode. Table 15-458 describes the synchronous NOR formulas.
Configuration Parameter | Unit | Description |
---|---|---|
A | ns | Pulse duration – gpmc_cs low |
B | ns | Delay time – address bus valid to gpmc_clk first edge |
Delay time – gpmc_ben0/gpmc_ben1 valid to gpmc_clk first edge | ||
C | ns | Pulse duration – gpmc_ben0/gpmc_ben1 low |
D | ns | Delay time – gpmc_clk rising edge to gpmc_ben0/gpmc_ben1 invalid |
Delay time – gpmc_clk rising edge to gpmc_advn_ale invalid | ||
E | ns | Delay time – gpmc_clk rising edge to gpmc_cs invalid |
Delay time – gpmc_clk rising edge to gpmc_oen_ren invalid | ||
F | ns | Delay time – gpmc_clk rising edge to gpmc_cs transition |
G | ns | Delay time – gpmc_clk rising edge to gpmc_advn_ale transition |
H | ns | Delay time – gpmc_clk rising edge to gpmc_oen_ren transition |
I | ns | Delay time – gpmc_clk rising edge to gpmc_wen transition |
J | ns | Delay time – gpmc_clk rising edge to gpmc_ad data bus transition |
Delay time – gpmc_clk rising edge to gpmc_ben0/gpmc_ben1 transition | ||
K | ns | Pulse duration – gpmc_advn_ale low |
L | ns | Delay time – gpmc_wait invalid to first data latching gpmc_clk edge |
The configuration parameters are calculated through the following formulas. For more information, see the device data manual.
Figure 15-98 shows a simplified example of a synchronous NOR single read where formulas are associated with signal waves.