TMXF28155 Supermapper
155/51 Mbits/s SONET/SDH x28/x21 DS1/E1
Data Sheet
June 2002
12 28-Channel Framer Registers (continued)
Table 437. FRM_FFLR2, Frame Formatter Link Register 2 (R/W)
Address*
Bit
Name
Function
Reset
Default
0x8LPF5 15:14 FRM_TXLBMD[1:0] Transmit Loopback Modes.
00
00 = loopbacks off.
01 = line loopback.
10 = payload line loopback pass through. (The received payload
data, the CRC bits, and the frame alignment bits are looped
back to the line. The data link bits are inserted.)
11 = payload line loopback regenerate. (The received payload
data is looped back to the line. The CRC bits, the frame
alignment bits, and data link bits are regenerated and
inserted.)
13:10
9
RSVD
Reserved. Must write to 0.
0000
0
FRM_TXLLBOFF Transmit D4 SF Line Loopback Off Code.
0 = do not transmit the D4 SF line loopback off code.
1 = transmit the D4 SF line loopback off code. (Repeated 001
patterns with the framing bits overwriting the pattern
T1.403, Section 9.3.1.2.)
8
FRM_TXLLBON Transmit D4 SF Line Loopback On Code.
0
0 = do not transmit the D4 SF line loopback on code.
1 = transmit the D4 SF line loopback on code. (Repeated
00001 patterns with the framing bits overwriting the pat-
tern T1.403, Section 9.3.1.1.)
7:6
5
RSVD
Reserved. Must write to 0.
0
0
FRM_TXIID
Transmit DS1 Idle ID (Fixed Pattern Defined inT1.403,
Section D.2).
Note: For ESF, the Supermapper only transmits the framed
pattern in the outgoing DS1 to send RAI along with the idle
code. Bit 2 (FRM_TXRAI) of this register has to be set.
0 = on demand idle ID off.
1 = on demand idle ID on (send idle ID).
4
FRM_TXAUXP
Transmit AUXP.
0
0 = on demand AUXP off.
1 = on demand AUXP on (send AUXP).
Reserved.
3
2
RSVD
—
0
FRM_TXRAI
Transmit RAI.
0 = on demand RAI off.
1 = on demand RAI on (send RAI).
Reserved.
1
0
RSVD
—
0
FRM_TXAIS
Transmit AIS.
0 = on demand AIS off.
1 = on demand AIS on (send AIS).
* See Table 429 on page 298 for values of L and P.
306
Agere Systems Inc.
ETC [ ETC ]
