cx28560 Mindspeed Technologies, cx28560 Datasheet - Page 176

• Manufacturer Part Number: cx28560
• Description: Hdlc Controller
• Manufacturer: Mindspeed Technologies

Basic Operations
7.3.5.4
7-18
Effects:
Channel-Level Recovery Actions:
Short COFA (SHT COFA)
A short COFA interrupt is generated for any transparent mode message whose
reception is ended due to a COFA error and for which no data was transferred from
RSLP to RBUFFC or to the host. In this case, no other indication is provided for this
errored message.
NOTE:
Reason:
Effects:
Channel-Level Recovery Actions:
• OOF Interrupt (if OOFIEN = 1 and OOFABT = 1 in
• If bit field OOFABT = 0, RSLP and RBUFFC continue as if there are no errors
• If bit field OOFABT = 1, all incoming data is replaced by all 1s (0xFF) data
• RBUFFC is not affected and continues to transfer data to the host.
• None required.
• Signal failure, glitch or realignment caused by the physical interface sourcing
• RxSHT Interrupt (if IDLEIEN = 1 in
• RSLP restarts channel operation as soon as the COFA condition is recovered
• RBUFFC is not affected and continues to transfer data to the host.
• None required.
Configuration register).
and transfer received data to the host.
sequence. Normal data processing resumes when the ROOF input pin is
deasserted (low), indicating the OOF condition has ended.
Only transparent mode COFA creates such a scenario. The exact scenario is as
follows: a COFA condition happens within the next few bytes after an
abnormal message termination (i.e., a prior COFA or overflow error) or after a
channel activation.
the RSYNC or TSTB input signal.
Configuration register).
and the channel reaches its first assigned time slot.
Mindspeed Technologies™
Advance Information
Chapter
5.0, RSLP Channel
Chapter
5.0, RSIU Port
CX28560 Data Sheet
28560-DSH-001-B