
28229-DSH-001-B
Mindspeed Technologies
7
-39
CX28224/5/9 Data Sheet
Registers
0x0B—ERRPAT (Error Pattern Control Register)
The ERRPAT register provides the error pattern for the HEC error insertion function.
ErrHEC (bit 4) in the CGEN register (0x08) enables this function. Each bit in the
error pattern register is XORed with the corresponding bit of the calculated HEC byte
to be errored.
0x0C—CVAL (Cell Validation Control Register)
The CVAL register controls the validation of incoming cells.
Bit
Default
Name
Description
7
0
ErrPat[7]
Error pattern bit 7.
6
0
ErrPat[6]
Error pattern bit 6.
5
0
ErrPat[5]
Error pattern bit 5.
4
0
ErrPat[4]
Error pattern bit 4.
3
0
ErrPat[3]
Error pattern bit 3.
2
0
ErrPat[2]
Error pattern bit 2.
1
0
ErrPat[1]
Error pattern bit 1.
0
ErrPat[0]
Error pattern bit 0.
Bit
Default
Name
Description
7
0
RejHdr
When written to a logical 1, this bit enables the Rejection of certain Header cells.
When enabled, cells with headers matching the RXHDRx/RXMSKx definition are
rejected and all others are accepted. When written to a logical 0, cells with matching
headers are accepted and cells with non-matching headers are rejected.
6
1
DelIdle
When written to a logical 1, this bit enables the Deletion of Idle Cells. When enabled,
cells matching the RXIDL/IDLMSK definition are deleted from the received cell
stream. When written to a logical 0, idle cells are included in the received stream.
5
1
EnRxCos
When written to a logical 1, this bit enables the Receive HEC Coset. When written to
a logical 0, the HEC Coset is disabled.
4
1
EnRxCellScr
When written to a logical 1, this bit enables the Receive Cell Scrambler. When
written to a logical 0, the Receive Cell Scrambler is disabled.
3
0
EnHECCorr
When written to a logical 1, this bit enables HEC Correction. When written to a
logical 0, HEC Correction is disabled.
2
0
DisHECChk
When written to a logical 1, this bit disables HEC Checking. When written to a logical
0, HEC checking is performed as a cell validation criterion. See
Table 5-1.1
0
DisCellRcvr
When written to a logical 1, this bit disables the Cell Receiver. When disabled, all cell
reception is disabled on the next cell boundary. When written to a logical 0, cell
reception begins or resumes on the next cell boundary.
0
DisLOCD
When written to a logical 1, this bit disables Loss of Cell Delineation. When disabled,
cells are passed even if cell delineation has not been found. When written to a
logical 0, cells are passed only while cell alignment has been achieved. See