Bt8370/8375/8376
Fully Integrated T1/E1 Framer and Line Interface
3.8 Receiver Registers
044—Loopback Deactivate Code Pattern (LBD)
7
6
5
4
3
2
1
0
LBD[1]
LBD[2]
LBD[3]
LBD[4]
LBD[5]
LBD[6]
LBD[7]
—
LBD[1]
First bit expected of LOOPDN pattern
Second bit expected of LOOPDN pattern
Third bit expected of LOOPDN pattern
LBD[2]
LBD[3]
LBD[4]
LBD[5]
LBD[6]
LBD[7]
Fourth bit expected—Last bit if DN_LEN selects a 4-bit pattern.
Fifth bit expected—Last bit if DN_LEN selects a 5-bit pattern.
Sixth bit expected—Last bit if DN_LEN selects a 6-bit pattern.
Seventh bit expected—Last bit if DN_LEN selects a 7-bit pattern.
045—Receive Alarm Signal Configuration (RALM)
7
6
5
4
3
2
1
0
0(1)
—
—
FS_NFAS
EXZ_LCV
YEL_INTEG
RLOF_INTEG
RPCM_AIS
NOTE(S):
(1)
Bit 1 must be written to 0.
FS_NFAS
Include FS/NFAS in FERR and FRED—Selects whether Fs bit errors (T1) or NFAS Bit 2
errors (E1) are counted as frame errors [FERR; addr 050, 051], and loss of frame alignment
[FRED; addr 049] includes Fs or NFAS bit errors as part of the detection criteria. A number of
Fs bit locations checked also depends on JYEL framer mode.
0 = FERR and FRED do not include FS/NFAS
1 = FERR and FRED include FS/NFAS
EXZ_LCV
Excess Zeros Included in LCV—Select line code violation error count [LCV; addr 054, 055]
includes EXZ errors. Depending on RZCS bit setting [addr 040], each EXZ is equal to either 8
or 16 consecutive zeros.
0 = LCV does not include EXZ
1 = LCV includes EXZ
YEL_INTEG
Enable Yellow Alarm Integration—When set, both the receive frame and multiframe Yellow
Alarms [RYEL and RMYEL; addr 047] are integrated, as described in Table 3-13, Receive
Yellow Alarm Set/Clear Criteria (per the selected framer mode). RYEL and RMYEL interrupt
status [ISR7; addr 004] are similarly affected.
0 = normal RYEL and RMYEL status
1 = integrated RYEL and RMYEL status
N8370DSE
Conexant
3-51
CONEXANT [ CONEXANT SYSTEMS, INC ]
