PEX-400111
7.4 Interrupt Sources
This product generates interrupts to the computer with the following sources.
•
Serial interface
- Receive data ready
- Transmit data ready
- Receive data time-out
- Receive data trigger
- Transmit data trigger
- Transmit idle
- Line status (overrun, parity, framing, or break)
- Modem status
- Flow control
•
Parallel interface
- ACK signal
- ERROR signal (in the ECP mode)
7.5 Serial Interface Half-duplex Control
The PEX-400111 supports the half-duplex transmission. This function controls signals and configures
the delay time (setup time/hold time).
Setup time
RS
SD
Hold time
ON
OFF
OFF
Setup time: The delay time between the assertion of the RS signal and the start of data writing
Hold time: The delay time between the end of data transmission and the deassertion of the RS signal
Interface Corporation
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30
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