TMXF28155 Supermapper
155/51 Mbits/s SONET/SDH x28/x21 DS1/E1
Data Sheet
June 2002
12 28-Channel Framer Registers (continued)
Table 396. FRM_PMLR3, Performance Monitor Link Register 3 (R/W)
Address* Bit
Name
Function
Reset
Default
0x8LP82 15:11
RSVD
Reserved. Must write to 0.
00000
10:7 FRM_MHGALIGN[3:0] Handling Group Alignment Interrupt Mask. A 1 masks
the corresponding status bit in the interrupt status register
(Table 412 on page 293) from generating an interrupt. A 0
allows an interrupt to be generated.
0xF
6
FRM_MSEFS
Severely Errored Frame Interrupt Mask. A 1 masks the
corresponding status bit in the interrupt status register
(Table 412 on page 293) from generating an interrupt. A 0
allows an interrupt to be generated.
1
5
FRM_MFE
CEPT Functional Element Status Interrupt Mask. A 1
masks any and all of the FE status bits in Table 406 on
page 291 and Table 407 on page 292 from generating an
interrupt. A 0 allows an interrupt to be generated.
1
4:0
FRM_PM_IM6[15:0] Performance Monitor Register FRM_PMLR6 Interrupt 0x001F
Mask. A 1 masks the corresponding status bit in the inter-
rupt status register (Table 399 on page 289) from gener-
ating an interrupt. A 0 allows an interrupt to be generated.
* See Table 393 for values of L and P.
Table 397. FRM_PMLR4, Performance Monitor Link Register 4 (COR)
Address* Bit
Name
Function
Reset
Default
0x8LP83
15
14
13
FRM_SLIPO
Receive Elastic Store Slip Overflow. A 1 indicates that the
receive elastic store performed a control slip due to an elastic
store overflow condition. This signal is set when the error
occurs and is cleared when it is read, if there is not another
error during the read.
0
0
0
FRM_SLIPU
FRM_OOF
Receive Elastic Store Slip Underflow. A 1 indicates that the
receive elastic store performed a control slip due to an elastic
store underflow condition. This signal is set when the error
occurs and is cleared when it is read, if there is not another
error during the read.
Out-Of-Frame. A 1 indicates that the receive framer has lost
frame alignment and is currently searching for a new frame
alignment. Section 21.6.1, Loss of Frame Alignment Criteria, on
page 495 lists the loss of frame criteria for the framing bit.
(T1.231, Section 6.1.2.2.1, G.706, Section 4.1). Excessive
(exceeding the provisionable CRC error count) CRC errors may
optionally cause a reframe.
In ESF or J-ESF, more than 320 CRC-6 errors in 1 s result in
loss of frame alignment. The CRC error count is provisionable.
In the CEPT CRC-4 multiframe formats, more than 915 CRC-4
errors in 1 s result in loss of frame alignment (G.706, Section
4.3.2). The CRC error count is provisionable.
* See Table 393 on page 279 for values of L and P.
280
Agere Systems Inc.
ETC [ ETC ]
