cx28560 Mindspeed Technologies, cx28560 Datasheet - Page 175

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

CX28560 Data Sheet
7.3.5.2
7.3.5.3
28560-DSH-001-B
Receive Change Of Frame Alignment (COFA)
Out Of Frame (OOF)
Channel-Level Recovery Actions:
Same as HDLC mode.
Reason:
Effects:
Channel-Level Recovery Actions:
Same as HDLC mode.
Reason:
• Data in the internal FIFO is transferred to the host, the Receive Fragment
• If ERRIEN is set in
• When the overflow condition ends (i.e., space becomes available in the
• RBUFFC is not affected and continues shared memory buffer processing.
• If possible, increase internal FIFO size assigned to this channel. For this
• Notice that channel reactivation is not required.
• Signal failure, glitch, or realignment caused by the physical interface
• Causes serial interface to enter COFA condition until the RSYNC/TSTB
• Current message processing is ended for every active channel on this port.
• Receive COFA Interrupt (if COFAIEN = 1 in
• RBUFFC is not affected and continues to transfer data to the host.
• None required.
• ROOF input pin is asserted (high) because the attached physical layer
header of the last fragment is set as EOM = 1, ERROR = BUFF.
Chapter
generated, indicating an RxBUFF overflow.
channel FIFO), RSLP automatically restarts data processing. However,
RSLP ignores all time slots until reaching the time slot marked “first.”
action, all channel must first be deactivated.
sourcing the RSYNC or TSTB input signal.
pulse is followed by at least the assigned number of time slots for this port,
without another unexpected RSYNC/TSTB pulse.
All data received prior to the COFA condition is transferred to the host,
and the Receive Fragment header is written with ERROR = COFA. The
only exception to this description happens when the COFA condition is
detected within the first few bytes after channel activation or after the
channel suffered an overflow or another COFA, as described in this
section, Short COFA (SHT COFA).
Configuration register). When the COFA condition ends, RSLP restarts
data processing automatically, however all time slots are ignored until the
time slot marked “first”.
device is unable to recover a valid, framed signal.
Mindspeed Technologies™
5.0, TBUFFC Configuration register, an RxERR interrupt is
Advance Information
Chapter
5.0, RBUFFC Configuration register and
Chapter
5.0, RSIU Port
Basic Operations
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