CX28394/28395/28398
2.0 Circuit Description
Quad/x16/Octal—T1/E1/J1 Framers
2.2 Receiver
Figure 2-6. Interrupt-Driven Receive Data Link Processing
Interrupt Service Routine
Interrupt Occurred
Read Interrupt Status
No
Complete MSG
or Near Full
Interrupt
Yes
Read Data Link Status
Process Other Interrupt
Read Message Byte from FIFO
and Discard
Return
If
No
Message Status
on FIFO
Yes
Read Message Status from FIFO
Read X Message Bytes from FIFO
If
Yes
Message Status
is Good or
Continue
Return
No
Error Receiving Message
Return
NOTE(S): Message status contains number of message bytes (X) in FIFO.
100054E
Conexant
2-19