SPRSP58B june 2022 – june 2023 AM620-Q1 , AM623 , AM625 , AM625-Q1
PRODUCTION DATA
Read and write data valid windows will shift due to variation in process, voltage, temperature, and operating frequency. A data training method may be implemented to dynamically configure optimal read and write timing. Implementing data training enables proper operation across temperature with a specific process, voltage, and frequency operating condition, while achieving a higher operating frequency.
Data transmit and receive timing parameters are not defined for the data training use case since they are dynamically adjusted based on the operating condition.
Table 7-112 defines DLL delays required for OSPI0 with Data Training. Table 7-113, Figure 7-95, Table 7-114, and Figure 7-96 present timing requirements and switching characteristics for OSPI0 with Data Training.
MODE | OSPI_PHY_CONFIGURATION_REG BIT FIELD | DELAY VALUE |
---|---|---|
Transmit | ||
All modes | PHY_CONFIG_TX_DLL_DELAY_FLD, | (1) |
Receive | ||
All modes | PHY_CONFIG_RX_DLL_DELAY_FLD | (2) |
NO. | MODE | MIN | MAX | UNIT | ||
---|---|---|---|---|---|---|
O15 | tsu(D-LBCLK) | Setup time, OSPI0_D[7:0] valid before active OSPI0_DQS edge | DDR with DQS | (1) | ns | |
O16 | th(LBCLK-D) | Hold time, OSPI0_D[7:0] valid after active OSPI0_DQS edge | DDR with DQS | (1) | ns |
NO. | PARAMETER | MODE | MIN | MAX | UNIT | |
---|---|---|---|---|---|---|
O1 | tc(CLK) | Cycle time, OSPI0_CLK | 1.8V, DDR | 6.02 | 7.52 | ns |
3.3V, DDR | 7.52 | 7.52 | ns | |||
O2 | tw(CLKL) | Pulse duration, OSPI0_CLK low | DDR | ((0.475P(1)) - 0.3) | ns | |
O3 | tw(CLKH) | Pulse duration, OSPI0_CLK high | DDR | ((0.475P(1)) - 0.3) | ns | |
O4 | td(CSn-CLK) | Delay time, OSPI0_CSn[3:0] active edge to OSPI0_CLK rising edge | DDR | ((0.475P(1)) + (0.975M(2)R(4)) + (0.04TD(5)) - 1) | ((0.525P(1)) + (1.025M(2)R(4)) + (0.11TD(5)) + 1) | ns |
O5 | td(CLK-CSn) | Delay time, OSPI0_CLK rising edge to OSPI0_CSn[3:0] inactive edge | DDR | ((0.475P(1)) + (0.975N(3)R(4)) - (0.04TD(5)) - 1) | ((0.525P(1)) + (1.025N(3)R(4)) - (0.11TD(5)) + 1) | ns |
O6 | td(CLK-D) | Delay time, OSPI0_CLK active edge to OSPI0_D[7:0] transition | DDR | (6) | (6) | ns |