In the datasheet at AD7875, "TIMING CHARACTERISTICS", It is t15 : 60 ns (min) ; CS to RD setup time (Mode 2).
Is it correct ? This is the latch time (output format setup time) from Serial register to Parallel output register ?
We know the other general devices are 0 ns (min) ; CS to RD setup time.
Our customer will run the mode 2, parallel interface.They want to control /CS and /RD signal at same time.The "60ns" setup time is necessary?
AD7875t15: 60 ns min CS to RD setup time (Mode 2)t18: 0 ns min CS to RD hold time (Mode 2)
ex.Following is the parallel interface ADC, they know it.AD7854t5: 0 ns min CS to RD to Setup Timet6: 0 ns min CS to RD Hold Time
AD7938-6t10: 0 ns min CS to RD setup time.t11: 0 ns min CS to RD hold time.