14.5.4.2.2 Output Data Transfer (DATA Command Only)

The host can assert #OE only during DATA commands to query output data. The host must wait for the RDY line to be lowered before asserting the #OE line. Then, the host must maintain #OE asserted in order to allow the target device to drive the DATA[15:0] lines and write the output data. When it has completed processing the DATA command, the target device always waits for the host to assert the #OE line before driving the DATA[15:0] lines then asserting the #VALID line.

The #VALID line notifies the host that the output data is available for reading. Consequently, the target device must keep the #VALID signal asserted and the output value on the DATA[15:0] lines until it detects the next rising edge of the #OE signal.

Once it has detected the assertion of the #VALID line, the host reads the output value on the DATA[15:0] lines. Then, the host must deassert the #OE line to notify the target device that the output data has been read. Finally, the target device can release the DATA[15:0] lines before raising again the RDY line.