cx28560 Mindspeed Technologies, cx28560 Datasheet - Page 105

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

CX28560 Data Sheet
Table 5-16. BUFFC Interrupt Descriptors Format (2 of 3)
28560-DSH-001-B
36:35
34:32
31:27
Field
Bit
37
26
RXNFFRAMEI/TXNFFRAMEI
RVSD
RXERR[2:0]
RVSD
RXSHRT/TXRSVD
Name
Value
—
—
Mindspeed Technologies™
0
1
0
1
2
3
4
5
6
7
0
1
Transition to the New Flexiframe has not been completed.
Transition to the New Flexiframe has been completed.
If DIR = 0 then this is a RNFFRAMEI, otherwise if DIR = 1 then this indicates a
TNFFRAMEI. The channel number field is not valid.
Reserved
End Of Message Status Decoding.
NOTE(S):
Receiver message error (decoded) - no error.
RXBUFF = Overflow
RXCOFA = Change Of Frame Alignment.
RXOOF = Out Of Frame.
RXABT = Abort Termination.
Generated when received message is terminated with an abort sequence (at
least seven sequential ones).
RXLNG = Long Message.
Generated when received message length (after zero extraction) is greater
than selected maximum message size (depended on RSLP Maximum
message length registers). Message reception is terminated and further
transfer of data to the host is not performed.
RXALIGN = Byte Alignment Error.
Generated when message payload size, after zero extraction, is not a multiple
of 8 bits. This generally occurs with a FCS error. This interrupt also implies a
FCS error. The FCS interrupt will not be generated if the ALIGN interrupt is
issued.
RXFCS = Frame Check Sequence Error.
Generated when received HDLC frame is terminated with byte aligned 7Eh
flag but computed FCS does not match received FCS.
Reserved.
A receive too short message interrupt was not generated.
If DIR = 0 (RX)—Rx Short Message occurs.
If DIR = 1 (TX)—Reserved
Advance Information
This field is only valid if DIR = 0 and RXEOM = 1.
Description
The CX28560 Memory Organization
5
-
15