
Preliminary Data Sheet, Rev. 1
October2000
TMXF28155 Super Mapper
155/51 Mbits/s SONET/SDH x28/x21 DS1/E1
211
Lucent Technologies Inc.
SPE Mapper Functional Description
(continued)
SPE Mapper Receive Direction Requirements
(continued)
Table 110. N1 Monitor
K3 Byte Monitor
The SPE mapper stores the current value of the K3 byte in SPE_K3DMON[7:0] (Table 128). This is updated after a
number of consecutive frames (determined by the value programmed in bits SPE_CNTDK3[3:0] (Table 126)) of
identical K3 bytes, i.e., the 8-bit pattern must be identical for a number of frames determined by the value of
SPE_CNTDK3[3:0] prior to updating the K3 register.
Whenever the contents of the K3 byte monitor (SPE_K3DMON[7:0]) changes, a delta bit SPE_K3DMOND
(Table 122) is set. The interrupt generated by SPE_K3DMOND can be masked off by the SPE_K3DMONM
(Table 123).
Table 111. K3 Monitor
RDI-P Detect
A remote defect indication-path (RDI-P) signal indicates to STS PTE that its peer STS PTE has detected a defect
on the signal that it originated. The SPE mapper supports both the single bit RDI-P and the 3-bit enhanced RDI-P;
the mode is selectable using bit SPE_RPRDI_MODE (Table 125). When SPE_RPRDI_MODE = 0, 1-bit code is
supported and when SPE_RPRDI_MODE = 1, 3-bit enhanced RDI-P code is supported. Three bits of the G1 byte
(G1[3:1]) are reserved for the RDI-P signal.
The SPE mapper monitors for a 1-bit RDI-P code in G1[3] bit or a 3-bit enhanced remote defect indication (RDI-P)
condition in the G1[3:1] bits and stores the current value in bits SPE_PRDIDMON[2:0] (Table 128). The current
value is updated after a number of consecutive frames (determined by the value of bits SPE_CNTDPRDI[3:0]
(Table 126)) of identical G1[3:1], i.e., the 3-bit pattern must be identical for a number of frames determined by the
value of SPE_CNTDPRDI[3:0] prior to updating SPE_PRDIDMON[2:0].
Whenever the contents of SPE_PRDIDMON[2:0] changes, a delta bit SPE_PRDIDMOND (Table 122) is set. The
interrupt generated by SPE_PRDIDMOND can be masked off by SPE_PRDIDMONM (Table 123).
Table 112. AIS-P and RDI-P Detect
Name
Function
SPE_N1DMON[7:0] (Table 128)
SPE_CNTDN1[3:0] (Table 126)
SPE_N1DMOND (Table 122)
SPE_N1DMONM (Table 123)
Fault Location Current Consistent Value.
Continuous N Times Detect (3—15).
N1 Data Monitor Delta Bit.
N1 Data Monitor Mask Bit.
Name
Function
SPE_K3DMON[7:0] (Table 128)
SPE_CNTDK3[3:0] (Table 126)
SPE_K3DMOND (Table 122)
SPE_K3DMONM (Table 123)
Fault Location Current Consistent Value.
Continuous N Times Detect (3—15).
K3 Data Monitor Delta Bit.
K3 Data Monitor Mask Bit.
Name
Function
SPE_CNTDPRDI[3:0] (Table 126)
Continuous Times Detect Count Value for
G1[3:1] Bits (3—15).
Path RDI Delta Bit.
Path RDI Mask Bit.
SPE_PRDIDMOND (Table 122)
SPE_PRDIDMONM (Table 123)