Datasheet
Electrical characteristics
i.MX 8QuadXPlus and 8DualXPlus Automotive and Infotainment Applications Processors, Rev. 0, 11/2018
PRELIMINARY NXP Semiconductors62
4.10.2.3 SAI Slave mode
In this mode, transmitter and/or receiver parts are set to receive transmit and/or receive clock from external
world. Frame sync can be either input or output.
Figure 24. SAI Slave mode
t3 SAI TXD output valid — 2 ns
t4 SAI RXD/RXFS/TXFS input setup 6 — ns
t5 SAI RXD/RXFS/TXFS input hold 0 — ns
1
Given the high setup time requirement on inputs, receiver and transmitter, when using frame sync in input, are likely to run at
a lower frequency. This frequency will be driven by characteristics of the external component connected to the interface.
Table 55. SAI timings—Slave mode
ID Parameters Min Max Unit
— SAI TXC/RXC clock frequency — 24.576 MHz
t1 SAI TXC/RXC pulse width low/high 45% 55% TXC/RXC period
t2 SAI TXFS/RXFS output valid — 13 ns
t3 SAI TXD output valid — 13 ns
t4 SAI RXD/RXFS/TXFS input setup 1 — ns
t5 SAI RXD/RXFS/TXFS input hold 4 — ns
Table 54. SAI timings—Master mode (continued)
ID Parameters Min Max Unit