TMXF28155 Datasheet, PDF (275/606 Pages) Agere Systems – TMXF28155 Super Mapper 155/51 Mbits/s SONET/SDH x28/x21 DS1/E1

Preliminary Data Sheet
May 2001
TMXF28155/51 Super Mapper
155/51 Mbits/s SONET/SDH x28/x21 DS1/E1
12 28-Channel Framer Registers (continued)
Table 384. FRM_PMLR3, Performance Monitor Link Register 3 (R/W)
Address*
0x8LP82
Bit
15:11
10:7
6
5
4:0
Name
—
FRM_MHGALIGN[3:0]
FRM_MSEFS
FRM_MFE
FRM_PM_IM6[15:0]
Function
Reserved. Must write to 0.
Handling Group Alignment Interrupt Mask. A 1 masks
the corresponding status bit in the interrupt status register
(Table 400) from generating an interrupt. A 0 allows an
interrupt to be generated.
Severely Errored Frame Interrupt Mask. A 1 masks the
corresponding status bit in the interrupt status register
(Table 400) from generating an interrupt. A 0 allows an
interrupt to be generated.
CEPT Functional Element Status Interrupt Mask. A 1
masks any and all of the FE status bits in Table 394 and
Table 395 from generating an interrupt. A 0 allows an
interrupt to be generated.
Performance Monitor Register FRM_PMLR6 Interrupt
Mask. A 1 masks the corresponding status bit in the inter-
rupt status register (Table 387) from generating an inter-
rupt. A 0 allows an interrupt to be generated.
Reset
Default
00000
0xF
1
1
0x001F
* See Table 381 for values of L and P.
Table 385. FRM_PMLR4, Performance Monitor Link Register 4 (COR)
Address* Bit
0x8LP83 15
14
13
Name
FRM_SLIPO
FRM_SLIPU
FRM_OOF
Function
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.
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 488 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.
Reset
Default
0
0
0
In ESF or J-ESF, more than 320 CRC-6 errors in 1 second
result in loss of frame alignment. The CRC error count is provi-
sionable.
In the CEPT CRC-4 multiframe formats, more than 915 CRC-4
errors in 1 second result in loss of frame alignment. (G.706 sec-
tion 4.3.2). The CRC error count is provisionable.
Agere Systems Inc.
275